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Table of Content
20 April 2024, Volume 52 Issue 2
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  • Evaluation index system of maize varieties suitable for mechanical grain harvest in Inner Mongolia
    SHI Haibo, LIANG Hongwei, ZHANG Jing, YANG Jingyuan, HAN Ping′an, LIU Zhixiong, FENG Yong, SU Erhu, ZHANG Laihou, ZHAO Ruixia
    2024, 52(2):  1-14.  doi:10.12190/j.issn.2096-1197.2024.02.01
    Abstract ( 2672 )   PDF (1269KB) ( 121 )   Save
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    【Objective】The evaluation index system of maize varieties suitable for mechanical grain harvest in Inner Mongolia was established to provide the basis for the evaluation,selection and timely harvest of maize varieties suitable for mechanical grain harvest in Inner Mongolia,and to point out the direction for variety breeding.【Methods】The representative varieties of six maturity groups from extremely early maturity to late maturity were used as experimental materials to study the mechanical grain harvest traits simultaneously in six ecological regions of Inner Mongolia,at the physiological maturity,10,20 and 30 d after physiological maturity,the grain breakage rate,grain fragmentation rate,impurity rate,grain moisture content and plant lodging rate were measured;The varieties with suitable ecological regions conditions and excellent mechanical grain harvest traits were selected for the identification and selection of evaluation index of varieties suitable for mechanical grain harvest.【Results】Grain breakage rate,grain fragmentation rate and impurity rate have an extremely significant positive correlation with grain moisture content(P<0.01). The grain moisture content at harvest stage has an extremely significant negative correlation with the time and accumulated temperature from emergence to harvest,from silking to harvest,and from maturity to harvest(P<0.01),and the correlation increased in turn.The grain dehydration rate has an extremely significant positive correlation with the basic moisture content and daily average temperature(P<0.01). The regression equation of grain dehydration rate (y) with basic moisture content (x1) and daily average temperature (x2) was y=-0.523 318+0.022 732x1+0.025 422x2,R2=0.419 2,P<0.01. The total yield loss rate and ear drop rate have an extremely significant positive correlation with lodging rate of plants at harvest stage(P<0.01),but grain drop rate was not significantly correlated with lodging rate of plants at harvest stage(P>0.05). There was no significant correlation between plant lodging rate and plant height,ear height,ratio of ear height to plant height,stem diameter,ratio of stem diameter to plant height(P>0.05). The primary and secondary index for the evaluation of maize varieties suitable for mechanical grain harvest were established,covering 3 levels and 55 index.【Conclusion】The evaluation index system of maize varieties suitable for mechanical grain harvest in Inner Mongolia was established.It takes into account the commonness and regional individuality of each ecological region,and the index is quantified and easy to operate. The provision of the “grain fragmentation rate” index points out the invisible loss in the process of mazie mechanical grain harvest,which makes the evaluation of yield loss more comprehensive.
    Corp cultivation·Germplasm resources
    Evaluation and identification index screening of shade-tolerant soybean varieties(lines)suitable for maize-soybean intercropping in northern Jiangsu
    LIU Shuhua, ZHANG Lijie, ZHOU Lingling, YU Xiang, TIAN Fufa, MENG Jiali, WU Shaojun, SHEN Hong, YANG Nianfu, ZHANG Yanliu
    2024, 52(2):  15-25.  doi:10.12190/j.issn.2096-1197.2024.02.02
    Abstract ( 2141 )   PDF (1118KB) ( 23 )   Save
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    【Objective】Screening shade-tolerant soybean varieties(lines) suitable for maize-soybean intercropping planting mode in northern Jiangsu,and constructing an accurate and reasonable soybean shade tolerance evaluation system.【Methods】The natural shade environment created by maize-soybean intercropping in northern Jiangsu was used as the treatment,and the clear seed was used as the control. 12 agronomic traits such as plant height,pod height,and branch number of 24 soybean varieties(lines) were measured at maturity stage. Principal component analysis,membership function method,and multiple linear stepwise regression analysis were used to construct shade tolerance coefficients and evaluate the comprehensive shade tolerance of each soybean variety(lines) under intercropping mode.【Results】Index of shade tolerance coefficient of 12 agronomic traits were transformed into 4 independent comprehensive indexes,representing 74.771% of the original data information. The results of comprehensive shade tolerance evaluation value(D) and cluster analysis showed that 24 soybean varieties(lines) could be divided into 3 categories according to their adaptability under shade stress,including strong shade-tolerant(six varieties/lines),moderate shade-tolerant(nine varieties/lines)and weak shade-tolerant(nine varieties/lines). The regression equation of shade tolerance was constructed by multiple linear stepwise regression analysis:D=-1.158+0.062X2+0.249X5+0.201X7+1.002X10+0.665X11R2=0.972 2),and the fitting accuracy was more than 89.14%. Five shade tolerance identification indexes of pod height,pod number per plant,seed number per plant,100-seed weight and yield were selected.【Conclusion】According to the shade tolerance ability,the 24 soybean varieties(lines) were divided into three categories:strong shade-tolerant,moderate shade-tolerant and weak shade tolerant. Under the maize-soybean intercropping model in northern Jiangsu,five traits,including pod height,number of pods per plant,number of grains per plant,100 grain weight,and yield,can be selected for comprehensive evaluation of soybean shade tolerance. Under the maize-soybean intercropping mode in northern Jiangsu,five traits,including pod height,pod number per plant,seed number per plant,100 seed weight,and yield,could be selected to comprehensively evaluate the shade tolerance ability of soybean.
    Soil and fertilizer·Physiology and biochemistry
    Effects of the growth and development of potatoes and soil nutrients in potato fields based on soaking seeds with different microbial agents
    LIU Yana, CHEN Wenjin, FAN Yafang, WEI Hong, ZHAO Yinglin, XUE Huiling, ZHANG Jing, KONG Qingquan, HE Xiaoyong, ZHANG Ziyi
    2024, 52(2):  26-36.  doi:10.12190/j.issn.2096-1197.2024.02.03
    Abstract ( 2752 )   PDF (1396KB) ( 56 )   Save
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    【Objective】To explore the effects of different microbial agents on potato growth and development and soil nutrients in potato fields,so as to provide a reference for green and sustainable potato planting in Inner Mongolia.【Methods】Potato V7 was used as the test material,by setting distilled water(CK),applying Bacillus sp. 188 bacterial agent(T1),Pseudomonas sp. BP16 bacterial agent(T2),and Streptomyces rochei D74 bacterial agent(T3) four treatments to soak the seeds for 30 min. Potato yield,tuber starch content,dry matter mass of each organ,nutrient accumulation per plant,leaf chlorophyll content,nitrate reductase activity,soil ammonium nitrogen,nitrate nitrogen,available phosphorus and available potassium content were measured at different growth stages after potato planting.【Results】After 110 days of potato planting,compared with CK,the yield of potato in T2 and T3 treatments was significantly increased by 7.14% and 9.16%(P<0.05),the starch content of tubers was significantly increased by 11.84% and 16.38%(P<0.05),the dry matter mass of potato roots,stems,leaves,and tubers were significantly increased by 26.87%,16.92%,11.77% and 13.59% by T3 treatment(P<0.05),the accumulation of nitrogen,phosphorus and potassium in plants was significantly increased by 28.86%,32.78% and 30.81% by T3 treatment(P<0.05). After 70 days of potato planting,the chlorophyll content in potato leaves treated with T3 treatment was the highest [4.29 mg/(g·FW)],and the nitrate reductase activity in the leaves was significantly increased by 15.29% compared to CK(P<0.05). After 50 days of potato planting,the soil nitrate nitrogen content in T3 treatment reached its maximum value(42.32 mg/kg),the available phosphorus content significantly increased by 26.17% compared to CK(P<0.05),and the available potassium content in T1 and T3 treatments significantly increased by 24.95% and 21.65% compared to CK(P<0.05),respectively.After 70 days of planting,the soil ammonium nitrogen content in T2 treatment significantly increased by 47.03% compared to CK(P<0.05).【Conclusion】Soaking seeds with Streptomyces rochei D74 microbial can increase potato yield,tuber starch content,dry matter mass of each organ,plant nitrogen,phosphorus and potassium accumulation,at agent tuber formation stage,the leaf chlorophyll content at maturation stage,soil nitrate nitrogen,available potassium,available potassium content at early growth stage,soil ammonium nitrogen at agent tuber formation stage. It can be used as a suitable microbial agent for potato cultivation in Inner Mongolia Autonomous Region.
    Effects of increased application of organic fertilizer and microbial fertilizer on agronomic traits and yield of soybean
    ZHAO Xiaoyu, CHEN Guangping, SU Erhu, WANG Xuejiao, LIU Kunyu, GAO Yuanli, E Lili, TANG Cunxi, HONG Di, LI Qiang
    2024, 52(2):  37-45.  doi:10.12190/j.issn.2096-1197.2024.02.04
    Abstract ( 2165 )   PDF (1348KB) ( 24 )   Save
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    【Objective】In order to investigate the effects of increased application of organic fertilizer and microbial fertilizer on soybean growth and development in Hulun Buir City,Inner Mongolia and the economic benefits,and provided a reference for soybean water and fertilizer management in this area.【Methods】The experiment will be carried out in the Morin Dawa Daur Autonomous Banner of Hulun Buir City from 2022 to 2023. Mengdou No. 48 was used as the test material,and three fertilization treatments were set up,conventional fertilization(CK),increased application organic fertilizer(OF),and increased application of microbial fertilizer(MF),respectively. The experiment analyzed soybean growth traits,leaf SPAD value,dry matter accumulation and yield factor indexes,and calculated economic benefits,and calculated synergism and efficiency increase.【Results】The plant height,number of main stem nodes and effective branching number of soybean treated with OM were significantly higher than those treated with CK(P<0.05),and the bottom pod height of soybean treated with OM and MF was significantly lower than that treated with CK(P<0.05). The changes of dry matter accumulation and leaf SPAD value of soybean increased gradually with the progression of growth stage,and the performance was OM>MF>CK.Dry matter accumulation at podding stage,drumming stage and maturity stage was significantly higher under OM treatment than CK(P<0.05). The leaf SPAD value of OM treatment was significantly higher than CK at flowering stage,podding stage and druming stage(P<0.05). In the past two years,the number of pod per plant,grain weight per plant,100-grain weight and effective plant number of soybean in OM and MF treatment were significantly higher than those in CK(P<0.05),and there was no significant difference between OM and MF treatment(P>0.05). Soybean yield has a extremely significant positive correlation with number of pod per plant,number of seeds per plant,grain weight per plant and effective plant number(P<0.01). Soybean yield was significantly positively correlated with whole growth period,plant height,number of main stem nodes,dry matter accumulation,leaf SPAD value and 100-grain weight(P<0.05). Soybean yield was significantly negatively correlated with bottom pod height(P<0.05). In the past two years,the soybean yield under OM treatment increased by 625.70 kg/hm2 and 599.60 kg/hm2 compared with CK,and the benefit increased by 21.20% and 19.30%,respectively.In addition,MF treatment increased production by 375.80 kg/hm2 and 237.10 kg/hm2 compared with CK,and the benefit increased by 10.40% and 3.80%,respectively.【Conclusion】In Hulun Buir City,Inner Mongolia,the best fertilizer mode for increasing soybean yield and efficiency was to apply organic fertilizer on the basis of conventional fertilizer.
    Effects of spraying selenium enriched fertilizer on agronomic traits, yield and grain selenium content of broomcorn millet
    GAO Zhijun, ZHU Lihua, WANG Shiqing, LIU Xiaoyan, YAN Yixuan
    2024, 52(2):  46-54.  doi:10.12190/j.issn.2096-1197.2024.02.05
    Abstract ( 55 )   PDF (794KB) ( 15 )   Save
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    【Objective】To study the effects of different periods of selenium fertilization on the agronomic traits and yield of broomcorn millet in Ordos City,Inner Mongolia,and optimize the production technology of selenium-enriched broomcorn millet in this area.【Methods】Two main varieties of local broomcorn millet,Yimi No. 11 and Yishu No. 11 were used as experimental materials to spray commercial selenium-enriched fertilizer on the leaf surface of broomcorn millet at jointing stage and filling stage. The variance and interaction effects of different selenium fertilizer treatments were analyzed for agronomic traits,yield and grain selenium content of broomcorn millet.【Results】Spraying selenium fertilizer was beneficial to the increase of 1 000-grain weight of broomcorn millet,and the results showed that the filling stage(A0B1)>filling stage+jointing stage (A1B1)>jointing stage(A1B0). After spraying selenium fertilizer at filling stage+ joniting stage,the yield and grain selenium content of Yimi No. 11 increased more than Yishu No. 11,the yield of Yimi No. 11 increased by 17.85%,i. e. 6 371.17 kg/hm2,while the yield of Yishu No. 11 increased by 8.06%,i. e. 6 142.28 kg/hm2. After spraying selenium fertilizer at filling stage+joining stage,the highest selenium content of Yimi No. 11 and Yishu No. 11 grains was 1.167 mg/kg and 0.756 mg/kg,respectively,which extremely significant increased the grain selenium content compared with other treatments(P<0.01).【Conclusion】Spraying selenium fertilizer can increase the yield of broomcorn millet,and the best spraying effect is at filling stage+jointing stage. Yimi No. 11 is more suitable for selenium fertilizer application. Applying selenium fertilizer at both grain filling stage and jointing stage can give both high yield and rich selenium.
    Application analysis of the established model of near-infrared grain quality analyzer
    YAN Liuying, CHEN Qiong, CHANG Jianzhong, XU Jing, ZHANG Dongmei, LIU Huatao
    2024, 52(2):  55-63.  doi:10.12190/j.issn.2096-1197.2024.02.06
    Abstract ( 58 )   PDF (1230KB) ( 21 )   Save
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    【Objective】To verify the accuracy and stability of the established wheat,maize,and sorghum models of the FOSS-InfratecTM Nova near-infrared grain quality analyzer.【Methods】To compare the moisture,protein,and starch content detection results of wheat,maize,and sorghum between the two detection units (bulk density module TWM detection unit and STM sample transfer unit) in the FOSS-InfratecTM Nova near-infrared grain quality analyzer,and the moisture,protein,and starch content under different optical paths and chemical method detection values in the STM detection unit.【Results】There was no significant difference(P>0.05) between the moisture,protein,and starch content detection values of wheat samples at an STM unit of 18 mm optical path and maize samples at an STM unit of 29 mm optical path and the detection values of TWM and chemical methods,The moisture,protein,and starch content detection values of sorghum samples at different STM optical paths were not well fitted and correlated with the detection values of chemical methods.【Conclusion】The established models for wheat and maize have stable performance and reliable results in analysis;The detection performance of the sorghum model is poor,and further calibration or reconstruction of the model is needed.
    Plant protection·Horticulture
    Screening of soil-applied herbicides in chickpea field
    WANG Dan, MA Yajie, SONG Xianpeng, SHAN Yongpan, MA Yan, ZHANG Yinbao, LIU Jun, WANG Xian, XIANG Li
    2024, 52(2):  64-71.  doi:10.12190/j.issn.2096-1197.2024.02.07
    Abstract ( 46 )   PDF (773KB) ( 15 )   Save
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    【Objective】To screen out safe and efficient soil-applied herbicides suitable for chickpea field.【Methods】To select 12 commonly-used herbicides in production for field soil experiments,use absolute value survey method to evaluate the weeding effect of each herbicide,and analyze the safety of each herbicide on chickpea under experimental doses.【Results】Every treatment had good soil sealing effect on broadleaf weeds in chickpea field,with the plant control efficacy ranging from 93.85% to 100% and the fresh weight control efficacy ranging from 87.80% to 100% at 45 days after application. However,there were some differences of control effect on gramineous weeds among these different treatments. 330 g/L pendimethalin EC,50% acetochlor EC,50% napropamide WDG,960 g/L S-metolachlor EC and 40% pyroxasulfone SC were safe to chickpea and could effectively control the gramineous weeds in chickpea fields,with the plant control efficacy ranging from 95.19% to 100% and the fresh weight control efficacy ranging from 99.13% to 100% after 45 days,42% fluridone SC,65% prodiamine WDG,480 g/L trifluralin EC,240 g/L oxyfluorfen EC and 250 g/L oxadiazon EC also had good control effect on gramineous weeds,with the plant control efficacy ranging from 96.58% to 100%. The fresh weight control efficacy of these five herbicides except 240 g/L oxyfluorfen EC was ranged from 88.24% to 100% after 45 days. However,these five kinds of herbicides exhibited different degree of phytotoxicity to chickpea,which could gradually ease with the growth of chickpea. 50% prometryn WP and 51% flumioxazin WDG could seal gramineous weeds to a certain extent,but the persistence was relatively short and 50% prometryn WP had obvious phytotoxicity.【Conclusion】Based on comprehensive consideration of control effect and crop safety,330 g/L pendimethalin EC,50% acetochlor EC,50% napropamide WDG,960 g/L S-metolachlor EC and 40% pyroxasulfone SC were suitable for soil-applied herbicide chickpea field.
    The study of potato blackleg disease primer source of infection
    HUANG Junxia, LU Bei, CAO Mengyu, HE Shuangshuang, LI Guoqiang, GAO Hongyu, QIU Kai, DENG Fengzhi, SUN Yanmin, Aledarixi, LIU Lihua
    2024, 52(2):  72-78.  doi:10.12190/j.issn.2096-1197.2024.02.08
    Abstract ( 63 )   PDF (867KB) ( 52 )   Save
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    【Objective】To clarify potato blackleg disease source of infection in Ulanqab City,Inner Mongolia,and provide the basis for formulating effective prevention and control measures for potato blackleg disease.【Methods】The pathogen isolation,pathogenicity identification,molecular identification and soil survival tests of potato blackleg disease were carried out. Through pot experiment and field experiment,seven treatments were set up to investigate the occurrence of potato blackleg disease in the soil of continuous cropping land,seed potatoes of diseased land and diseased residues,and analyze and verify the differences in incidence rate of different treatments.【Results】The incidence rate of potato blackleg harvested in diseased areas and planted as seed potato over winter was 40.00%. Pectobacterium atrosepticum was isolated from the disease residue buried in soil after overwintering,and the incidence rate was 43.33% in the experiment of planting disease-free potato after the disease residue was planted in the disease-free soil. The incidence rate of disease-free potato was 6.67% in the previous diseased plots. The amount of pathogenic bacteria in unsterilized soil gradually decreased with the extension of time,and no longer survived after two months at normal temperature,and no longer survived after four months at -20 ℃. The results indicated that P. atrosepticum could survive the winter in the disease residual and become the primary infection source in the second year. The pathogenic bacteria in diseased soil were related to the occurrence of disease,but the bacteria free in cultivated soil could only survive for two months at natural temperature.【Conclusion】 The primary infection source of potato blackleg disease in Ulanqab City,Inner Mongolia is the infected seed potato and the disease residual after winter,and the amount of bacteria carried by the seed potato is an important factor affecting the occurrence of the disease.
    Study on the softwood cutting rooting technology and root development mechanism of Carya illinoensis(Wangench.) K. Koch
    WANG Hao, LIU Wei, CAI Weijia
    2024, 52(2):  79-86.  doi:10.12190/j.issn.2096-1197.2024.02.09
    Abstract ( 51 )   PDF (740KB) ( 7 )   Save
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    【Objective】To improve the softwood cutting technology system for Carya illinoensis(Wangench.) K. Koch,and identify the endogenous substances affecting cutting root development.【Methods】Three Carya illinoensis(Wangench.) K. Koch varieties,Caddo,Jinhua and Mahan,were used as experimental materials to study the rooting rate and root effect index of cuttings under different hormone types,shading rates,humidity levels,and container conditions through four-factor four-level orthogonal test. The changes in soluble sugar content,soluble protein content,IAA content,ABA content,IAA/ABA,POD activity,and SOD activity with the root effect index were analyzed.【Results】The order of influence of various factors on the cuttings′ rooting rate of Carya illinoensis(Wangench.) K. Koch were humidity level=shading rate>types of hormone>container conditions. Cuttings under IBA treatment,0 or 60% shading rate and 60%<humidity levels≤90% could get the optimal cutting rooting rate. While cuttings under IBA treatment,60% shading rate and 60%<humidity levels of≤80% could get the optimal cuttings′ root development effect,which was within the optimal range for rooting rate screening. As the root effect index increasing,the content of soluble sugar and soluble protein in stem cuttings decreased,the IAA content and IAA/ABA increased,the ABA content decreased,SOD activity and POD activity increased. The difference in soluble protein content and POD activity between adjacent root effect index cuttings in the range of ≤0.5 were significant(P<0.05). The difference in IAA content between adjacent root effect index cuttings reached significant levels within the range of ≥0.3(P<0.05),and the increase in IAA/ABA continued to increase.【Conclusion】Carya illinoensis(Wangench.) K. Koch cuttings can achieve good rooting effect at IBA hormone treatment,60% shading rate and 60%<humidity level≤80%. Soluble protein,IAA content,IAA/ABA,POD activity are closely related to the root development of cuttings.
    Agroecology environment·Agrometeorology
    Analysis of agricultural carbon emission prediction in Gansu Province based on gray prediction and decoupling models
    HE Libo, REN Suling
    2024, 52(2):  87-96.  doi:10.12190/j.issn.2096-1197.2024.02.10
    Abstract ( 55 )   PDF (1281KB) ( 13 )   Save
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    【Objective】By analyzing the total amount of carbon emissions from agriculture in Gansu Province during 2000 to 2020 and its development and evolution characteristics,and the decoupling effect as a reference for the development of green and low-carbon agriculture in Gansu Province.【Methods】The agricultural carbon emissions in Gansu Province between 2000 to 2020 were measured based on the IPCC carbon emission coefficient method using agricultural inputs as the carbon source,and using the grey prediction model GM(1,1),the agricultural carbon emissions of different years were selected as samples to predict the agricultural carbon emissions in Gansu Province from 2025 to 2030,and the prediction results were compared and analyzed. The Tapio decoupling model was used to study and analyse the relationship between agricultural carbon emissions and economic development.【Results】Agricultural carbon emissions in Gansu Province from 2000 to 2020 show a trend of increasing and then decreasing.The source of carbon emissions were mainly chemical fertilizers and agricultural films,chemical fertilizer carbon emissions accounted for 31.27% to 43.22% of agricultural carbon emissions,always at the highest level during the 20-year period;agricultural carbon emissions reached a maximum of 2.825 138 million tons in 2015. After 2015,it began to decline gradually,and the agricultural carbon emissions in 2020 were 2.288 601 million tons. The decoupling relationship of agricultural carbon emissions from 2000 to 2020 mostly showed strong decoupling or weak decoupling. Using the data of the last 10 years and the data of the last 5 years as the samples to predict the agricultural carbon emissions as a whole all showed a clear downward trend.The model′s prediction accuracy was the highest when using the data of the last 5 years as the sample for prediction. The agricultural carbon emissions in Gansu Province have reached the peak before 2025,agricultural carbon emissions projected for a sample of the last 5 years of data will be 17.08% lower in 2025 compared to 2020,the rate of reduction will reach 30.36% in 2030,and the average annual reduction rate will be 0.139 million tons.【Conclusion】Gansu Province′s agricultural carbon emissions continue to decline,the agricultural economy shows stable growth,and agricultural carbon emissions will peak before 2025,indicating that Gansu Province has made some progress in green low-carbon agriculture in recent years. Measures should be taken according to the actual local situation in order to achieve the goal of continuously promoting the development of green agriculture,reducing high-carbon emission activities,increasing agricultural carbon sinks,and realizing agricultural carbon emission reduction in Gansu Province.
    Innovation and application of straw mulching technology for wind erosion prevention in northern agro-pastoral ecotone
    REN Yongfeng, LIU Dan, ZHANG Xiangqian, LU Zhanyuan, CHENG Yuchen, ZHANG Dejian, HE Jin, ZHAO Xiaoqing, GAO Yanhua
    2024, 52(2):  97-106.  doi:10.12190/j.issn.2096-1197.2024.02.11
    Abstract ( 58 )   PDF (1188KB) ( 17 )   Save
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    The northern agro-pastoral ecotone is an important ecological security barrier to curb desertification and sandification east to South in China,which is of great strategic significance to national food security and border stability. For a long time,the problems of farmland desertification degradation and productivity decline caused by serious soil wind erosion and over-cultivation have become increasingly prominent. The technology of straw crushing and covering surface wind erosion prevention has been carried out at home and abroad. The application of straw in the agro-pastoral ecotone is easy to blow away the soil and the stability of wind erosion control is poor. Therefore,the in-depth study of straw mulching technology for wind erosion prevention is of great significance in farmland ecological management. The paper discusses straw mulching techniques such as stubble mulching,broken straw mulching and stubble-straw composite mulching on wind erosion prevention and soil moisture conservation and fertilization,elucidates the effects of straw mulching on soil microbial community structure and crop agronomic traits and yield traits,summarizes the innovative content and application effects of stubble-straw composite mulching technology,and clarifies the effect and suitability of the wind erosion prevention by the differentiated stubble-straw composite precision mulching technology created in combination with the ecological characteristics of agro-pastoral ecotone and complex farming systems.The differentiated stubble-straw composite precise mulching technology has become the leading technology in major projects such as black soil protection in Northeast China,national farmland protection and quality improvement,and has been widely promoted and applied,providing important scientific and technological support for farmland protection and utilization,and national food security.
    Innovation and application of wind inhibition and erosion reduction technology for micro ripper covering of plough farmland in the black soil region along the foothill of Daxing′anling Mountains
    ZHANG Xiangqian, SHI Jingjing, RONG Meiren, LU Zhanyuan, REN Yongfeng, CHENG Yuchen, ZHANG Dejian, MENG Tiantian, HAO Nansen
    2024, 52(2):  107-114.  doi:10.12190/j.issn.2096-1197.2024.02.12
    Abstract ( 36 )   PDF (918KB) ( 12 )   Save
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    The foothill of Daxing′anling Mountains is an important production base of agricultural and livestock products in China.For a long time,unreasonable tillage methods such as excessive tillage and single tillage have accelerated the degradation of farmland wind erosion,quality decline,and reduced production capacity.Therefore,reducing soil wind erosion,improving farmland fertility and crop yield are urgent issues that need to be addressed for sustainable agricultural development.In this article,the techniques and application effects of traditional tilling,long-term no-tilling and rational rotation in areas of different ecological types were reviewed,and the content of core techniques of wind resistance and erosion reduction for micro ripper covering were discussed,as well as their effects on soil wind erosion,water retention and crop growth and yield. It was clarified that micro ripper covering is a key technology and approach for wind erosion prevention and control in winter and spring in the black soil region along the foothill of Daxing′anling Mountains,and the application in large areas has been effective,which solves the scientific and technological problems of the gradual degradation of farmland caused by heavy exposed wind erosion and heavy soil and water loss for a long time. It provides significant support for wind erosion prevention and control of plowed farmland along the foothill of Daxing′anling Mountains and its similar ecological types.
    Effects of meteorological factors on growth and yield of sorghum
    YU Dawei, CHENG Huijuan, WANG Lixin, GE Zhanyu, SUI Hongjie, PAN Yingxue, ZHOU Xuechao
    2024, 52(2):  115-125.  doi:10.12190/j.issn.2096-1197.2024.02.13
    Abstract ( 64 )   PDF (2716KB) ( 16 )   Save
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    【Objective】To explore the effect and regularity of meteorological factors on the growth and yield of sorghum.【Methods】Taking meteorological factors from different years in the planting area of Chifeng City,Inner Mongolia as the main factor,experiments were conducted for three consecutive years using sorghum varieties Liaonian No. 3 and Liaoza 37 as materials. The effects of meteorological factors on plant height,LAI,dry matteraccumulation,grain weight per panicle,1 000-grain weight,yield of sorghum in each growing stages were studied by correlation analysis and grey relation analysis,and the key meteorological factors were revealed.【Results】The growth period of seedling-emerging stage has a significantly negative correlation with average daily accumulated temperature(P<0.05) and an extremely significant negative correlation with average sunshine hours(P<0.01),the growth period of emerging-flowering stage has a significantly negative correlation with average sunshine hours(P<0.01),and the whole growth period had a significantly negative correlation with average daily accumulated temperature(P<0.05). There was a extremely significant positive correlation between the growth rate of LAI and rainfall from 10 d to 60 d after emergence(P<0.01),There was a significant positive correlation between the growth rate of plant height from 10 d to 70 d after emergence and accumulated temperature(P<0.01),There was a significant positive correlation between accumulation rate of dry matter accumulation and sunshine hours at seedling-jointing stage(P<0.05),at jointing-flowering stage it was significantly positive correlated with accumulated temperature(P<0.05),at 40 days after flowering it was significantly positively correlated with accumulated temperature and sunshine hours(P<0.05). The results of grey correlation degree analysis showed that the three meteorological factors that had the greatest influence on grain weight per panicle were the effective accumulated temperature during the growth period,the daily average temperature before flowering,and the effective accumulated temperature before flowering;and the three meteorological factors that had the greatest influence on the 1 000-grain weight were the daily average temperature before flowering,the effective accumulated temperature during the growth period and the effective accumulated temperature before flowering;The three meteorological factors that had the greatest influence on yield were the effective accumulated temperature after flowering,the daily average temperature during growth period and the daily average temperature after flowering.【Conclusion】The key meteorological factors affecting the growth period,plant height,LAI,dry matter accumulation,grain weight per panicle,1 000-grain weight and yield of each growing stage,of sorghum were different. The key meteorological factors affecting each index could be fully utilized in production,such as adjusting the sowing date or other measures to change the growth expectation of sorghum.
    Agricultural information technology
    Research dynamics,hot topic evolution,and development trends of innovation-driven agricultural development
    YUAN Hetao, LIANG Xun, YIN Zhaoxia
    2024, 52(2):  126-134.  doi:10.12190/j.issn.2096-1197.2024.02.14
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    【Objective】The system presents research dynamics,hot topic evolution,and development trends in innovation-driven agricultural development.【Methods】Using the CNKI database and CiteSpace 6.2 R4 econometric analysis software,a visual knowledge graph analysis was conducted on the research dynamics,hot topic evolution,and development trends in innovation-driven agricultural development in China From January 17,2001 to July 15,2023.【Results】From 2001 to 2023,research on innovation-driven agricultural development in China has progressed through three stages:the embryonic stage,rapid growth stage,and high-quality development stage. The top 5 disciplines in terms of number of publications were agricultural economy,economic system reform,agricultural basic science,scientific research management,and information economy,reflecting the emerging interdisciplinary integration of innovation-driven agricultural development research. The author with the highest number of publications JIANG Changyun,with 6 articles. Government departments,universities,and research institutes were the main contributors to research publications on innovation-driven agricultural development. While there was a certain degree of cooperation among authors and institutions,the cooperation was relatively loose. The most frequently occurring keywords was innovation-driven,with a frequency of 87. #0 innovation-driven was the cluster with the most citations in innovation-driven agricultural development research. From the perspective of keywords emergence,the top five keywords with the strongest emergence were:rural revitalization(2.44),smart agriculture(1.92),innovation-driven(1.91),industrialization(1.86),and transformation and upgrading(1.76). From 2001 to 2023,#0 innovation-driven had been the most popular and cross-disciplinary research topic.【Conclusion】Innovation-driven,scientific and technological innovation,No. 1 central document,and modern agriculture are currently the research hotspots in innovation-driven agricultural development. Research on rural revitalization,smart agriculture,and transformation and upgrading needs to be deepened,and future trends will focus on industrial integration,digital agriculture,and agricultural digitization research.
ISSN 2096-1197
CN 15-1375/S
CODEN BNXEAR
chief editor: LU Zhanyuan
Responsible Unit: Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences
Sponsor Unit: Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences
Editing Unit: Editorial Department of Journal of Northern Agriculture
Address: Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,22 Zhaojun Road,Hohhot,China
E-mail: bfnyxb@126.com