The current status of the domestic agricuhural fertilizer was introduced in this paper, both of applying fertilizercontent per unit area and the total content of applying fertilizer have a higher level in the world. In addition, we listed someproblems due to the unreasonable application of chemical fertilizer, and analyzed the reasons of the problem occurred, andput /brward the countermeasures trom tour aspects, namely policy, variety, tertilizer, fertilizer technology, tor providingsome reference to farmland chemical fertilizers.

Comprehensive analysis of 21 groups of maize hybrids by using principal component analysis, compared with CK,we selected 9 superior hybrid combinations, the result of selected 9 superior hybrid combinations as follows： S1-18, S1-4,S1-6, S1-12, S1-13, S1-14, S1-8, S1-19, S1-20 whose period of duration was 106 days and consisted with CK. The photosynthetic characteristics of Pn, Gs, Ci, Tr than CK respectively increased by 13.92%, 16.67%, 8.86%, 0.92%.Hundred grain weight, kernels per spike, rate of seed and yield respectively than CK increased by 5.56%, 0.71%, 0.20%,9.76%, especially S1-8 and S1-12 among those hybrid combinations had good comprehensive characters, such as period of duration, plant height, ear hight, number of leaves up ear, water content of grain and bract at harvest. Stem internodes puncture strength and breaking strength and number of bracts were consistent with CK, but yield and photosynthetic characteristics were superior to CK, so this two combinations had the available value in breeding.

Adopting the full implementation plan ＂3414＂,research in the impacts that the single, double and three factors of N,P,K and interaction on the development progress and agronomic characters were done.Under these experimental conditions,N_2P_2K_2, N_1P_2K_1 and N_1P_2K_2 made buckwheat ripe earlier so that the threat of frost damage was decreased. And reproductive growth will be 1~2 days in advance. Both single fertilizer and cooperation of N, P, K fertilizer can achieve the effects of increasing plant height, stem diameter, number of effective branches, number of main stem section and internode length within certain amounts. However, excessive fertilizer will inhibit these agronomic characters.

The single factor density gradient method was used in this study to evaluate the effects of astaxanthin on the body color, growth and several index of nonspecific immune of blood parrot. Blood parrot were fed on basal diet with 0‰,1‰,2‰, 3‰,4‰ astaxanthin for 7 weeks, The body color and growth index were measured every 7 days. After 7 weeks, the activities of total antioxidant capacity （T-AOC）, catalase （CAT）, superoxide dismutase （SOD） and the activity of lysozyme （LSZ） were measured. The results showed that, the hyperchromic effect of 4 ‰astaxanthin group on the blood parrot was significantly higher than the control group, the growth rate were higher in the 2%v and 3‰ group. The activities of T-AOC and CAT in the 4 ‰astaxanthin group were significantly higher, but there were insignificant different of SOD activity in the blood and liver and LSZ in the gill among all the treatment groups. Therefore, add different level of astaxantin in a certain range had significant effect to blood parrot body graces, but had similar effects on the nonspecific immune index.

This test used the Hongyan strawberry as the experime ntal material and aimed to investigate the change ofstrawberry fruit quality with different storage temperatures during the process of aging and the change of the uhra weakluminescence.The results showed that fruit hardness,chlorophyll,soluble solids content and titratable acid were on thedecline;soluble sugar, anthocyanin and VC were increased overall in the aging process; ultra weak luminescence were theoverall downward trend during the process of aging and ultra weak luminescence intensitywere decreased sharply with theaging degree deepening.In consequence, ultra weak luminescence intensitycan reflect the strawberryfruit senescence.

According to the data of arable land area in the counties of Horqin area,this paper summed up the change of arable land area and of gravity in Horqin area and the dynamic degree of land use and relative rate of change in the counties. This paper also analyzed the population and policy driving factors which lead to the change of the arable land. The results showed that total arable land in the Horqin showed fluctuations in the rising trend;arable land area changes in the Horqin Region existd great regional difference： the growth of arable land area in northern counties was far greater than the Horqin Region and the southern counties; the center of gravity of the cultivated land was obviously moving at the latitude and it divided into two stages in the longitudinal movement （it moved westward before 1996 and eastward after 1996）.

Plant resources were investigated in different growing stages from 2014 to 2015 autumn in Fu yuan Dongji airport.The results showed that a total of 99 kinds of wild plants belonging to 33 families, 78 genera and 31 taxa were dominant species. According to plant resources distribution pattern and species diversity, combining with data of birds and insects survey in different plant communities, birds distribution law were analyzed so as to provide technical assistance for bird strike prevention.

In 13 oil sunflower varieties （lines） to test the new varieties, using the method of grey correlation analysis,we analyzed the close degree of 8 main characters and yield relationship was done.The results showed that： oil sunflower was mainly associated with the order for production traits were： disk diameter〉 hundred-grain weight〉 stem diameter〉 setting rate〉plant height〉growth stage〉 oil content〉 seed kernel rate. Disk diameter had the greatest impact on the yield,but seed kernel rate had the least impact on the yield.

in order to study the effect of different measures on preventing browning and vitrification for strawberry in stem-tip culture, the strawberry stem tip and adventitious buds were selected. The results showed that the best concentration of 6-BA was 1.5 mg/L in induction medium. The browning rate of stem tip was significantly reduced by adding vitamin C with 50 mg/L in induction medium. The effect of darkness pretreatment on browning of strawberry stem tip in vitro was not significant. In subculture, the vitrification ratio of adventitious buds was decreased with reducing the concentration of 6-BA subculture by subculture.

The article reviewed the factors affecting on distant hybridization of Brassica crops through in-vitro cuhme ofovaries, Summarized methods for true and false hybrid identification and application on chromosome doubling of regenerationplants which were obtained through in-vitro culture ofovaries, and pointed out problems and development prospects inhybridization of Brassica crops through in-vitro cuhme of ovaries in order to provide reference for future research work.

With extremely cold days data from 16 stations in Hulun Buir during 1960—2014,the results showed that the geographical distribution of arctic days were unevenness and decreased from north to south;the forest area was more than pastoral area and rural area was the least. Interdecadal characteristics showed that arctic days in the 1960 s and 1970 s were the most,up to the 1960 s and the number of days significantly reduced in the 1980 s,at least in the 1990 s. At the beginning of 21 century,another arctic day slightly increased.The arctic days more appered in late December to late January,up to mid-January,followed by late January and gradual decreased after the beginning of spring in February.

In order to understand effect of controlled release urea（CRU） on potato, this paper has studied that the CRU was applied to potato in Wuchuan county and Chayouzhong banner in 2009—2011, where is main production of potato. The results indicated that yield of the potato was increased significantly by applying nitrogen fertilizer, CRU production of potato increased by 5.7% ~ 12.7% than conventional urea, an average of 7.4%, and the yield was the biggest by combined use of controlled release urea with conventional urea. CRU compared with conventional urea, Commodity potato rate increased 2%,tuber number per plant increased 0.2 ~ 0.6, tuber weight increased 6.5~7.2 g. The agronomic efficiency of nitrogen fertilizer was improved 7.5~8.8 kg/kg N by CRU application, and nitrogen use efficiency（NUE）was increased by 11.4%~15.9%. So it can significantly improve nitrogen fertilizer effect and reduce nitrogen loss. Two fertilizer effect was almost the same both75% CRU and 100% conventional urea in one base,which showed CRU can reduce the nitrogen application by 25%, under background of scarcely production cut.

By using multiple regression equation of the interpolation method, corn growth stage average precipitation spatial distribution was calculated in calendar year, the absolute error, inverse distance weighting method is used for error correction. On the basis of the water demand and the sensitivity index of lack rain in each stage of maize, the influence degree by precipitation was calculated in each growth stage. Using the proportion of water demand in each stage accounted for the whole growth period as the weight, It obtained the effects result of the precipitation in whole growth period. Inner Mongolia region precipitation generally difficult to meet the maize growth needs, and gradually reduce from east to west.

In order to study different apricot fruit quality, 4 kinds of local apricots selected in this article, whose single fruit weight, the stone weight, fruit quality index, edible rate, soluble solids, water insoluble solids, total sugar, total acid content, vitamin C, resistance to storage were determined. The results were as follow： Four varieties of apricots＂ fruit weight, fruit vertical diameter, transverse diameter and edible rate, sugar content, water insoluble solids, soluble solid and vitamin C content showed very significant difference, fruit quality index, sugar-acid ratio have significant differences, the stone weight, total acid content difference was not significant; Gold sun apricot fruit weight, seed weight, edibility, vertical diameter, transverse diameter, fruit storage resistance was significantly higher than the other varieties, Gold sun apricot fruit size was long, had a big advantage in transportation and storage; Katy＇s sugar content, soluble solids content and sugar-acid ratio were all significantly higher than other varieties, tastes sweet and slightly acidic, more in line with the taste requirements of the public.

NAC transcription factor family plays an important role in salt tolerance of plants. In this study, the NAC transcription factor family gene As NAC1 was cloned from oats, and the bioinformatics analysis was carried out. The results showed that the gene was 1 710 bp, encoding 320 amino acids, the isoelectric point was 6.62, and the molecular weight was 35.4 k D. The sequence analysis showed that As NAC1 was closely related to the KUP/HAK/KT of barley and wheat, and predicted that the protein had no hydrophobic transmembrane domain. Successfully constructed the plant p CAMBIA1301- As NAC1 expression vector, and transformed into Arabidopsis thaliana, obtained by comparison of salt stress under the condition of wild type Arabidopsis lines and transgenic lines phenotype, salt stress conditions, transgenic seed germination rate was 63%, and wild type was 43%; transgenic plant was wild type plants root length 1.39 times, 1.52 times and 1.37 times, fresh weight and dry weight of 1.50 times and 1.49 times,it indicated that salt tolerance of Arabidopsis plants were improved As NAC1 the expression.In order to provide experimental basis for revealing the salt tolerance mechanism of As NAC1 family gene NAC in plants, the study laid a foundation for improving the ability of plant salt tolerance by transgenic technology.

Glycyrrhiza uralensis is considered a pioneer plant in arid and semi-arid desert region. Due to the rich variety of Glycyrrhiza uralensis, uneven drought resistant varieties,and drought mechanism of Glycyrrhiza uralensis is not comprehensive, which brought great difficulties for the development of Glycyrrhiza uralensis. From starting with the influence of drought stress on Glycyrrhiza uralensis external morphology（growth of organs above ground, underground organ growth）,and internal anatomical structure（root, stem, leaf anatomical structure and ultrastructure）,the research progress recently at home and abroad of the external morphological structure, anatomical structure and ultrastructure of Glycyrrhiza uralensis by drought stress were reviewed, and it basically explained adaptive mechanism of Glycyrrhiza uralensis shape and anatomical structures under drought stress.It provided a theoretical basis for breeding drought-resistant varieties and improving drought resistance mechanism of Glycyrrhiza uralensis, also had great significance to improve the structure of soil, the prevention of land desertification and the maintenance of the ecological environment.

In this paper, with millet ＂Datong 34＂ as the material, the effects of different fertilization ratio on yield,economic characters of millet and the soil nutrient were obtained through the ＂3414＂ test. In the current millet production, phosphorus was the main factor restricting the production in local soil. we must apply enough pure phosphorus of 8~12 kg/667m~2. After successive years of application, nitrogen in the soil had reached a certain ability to supply, so it was enough to fertilizer pure nitrogen needed for the production, pure nitrogen of 5~10 kg/667m~2 should be applied. More fertilizer will cause too strong vegetative growth to reduce production. The content of available potassium in sandy loam soil was still low, and it should be applied to pure potassium of 2 kg/667m~2.

In this study, 59 confectionary sunflower varieties（lines） as the test materials, planting in a saline-alkali land in Longsheng town, Dengkou county, Bayannaoer, Inner Mongolia, the experiment land belongs to typical saline alkali soil in Hetao irrigation area. The growth period of record, determination of the agronomic traits, the yield per unit area and the determination of quality traits of grain harvest were measured.Using factor analysis and cluster analysis of 59 confectionary sunflower varieties with SPASS19.0 analysis software,comprehensive evaluation of salt and alkali resistance was done. The results showed that the difference salt resistance ability of different confectionary sunflower varieties were larger; the saline resistance of 59 confectionary sunflower were divided into 3 groups by clustering analysis. The varieties whose saline resistance were strongest were 30.5%,those whose saline resistance were stronger were 42.4% and those whose saline resistance were weakest were27.1%.Then factor analysis showed that the strongest salinity tolerance varieties were 14CF56 and 14CF57 and the weakest salinity tolerance varieties were 14CF44 and 14CF51.

In order to definite the suitable planting density and fertilizer of Jerusalem artichoke in saline and alkaline area of Inner Mongolia, an experiment was conducted with three factors design to study the main yield of Jerusalem artichoke ：density, base fertilizer, topdressing. The results calculated by analysis of variance（ANOVA） showed that the main effects of practices on rape yields were density topdressing density and base fertilizer and topdressing base fertilizer and topdressingdensity and topdressingbase fertilizerdensity and base fertilizer. The main yield is maximal（61 377kg/hm~2）when cultivating density was 27 795 plants/hm~2,base fertilizer and topdressing amounts were 600 kg/hm~2 and 300 kg/hm~2.This research will provide scientific reference for the Jerusalem artichoke in the future.

In order to further clear the effects of different ferti lizer products on maize planting,the experient arranged seven kinds of fertilizer products treatments that selected from the dealers of Linhe area.By studying the effects of the different fertilizer products on the yield and efficiency of maize to provide scientific theoretical basis for local maize planting.The results showed that except treatment 1 other fertilizer products treatments for maize yield had an increasing effects and the yield of treatment 5 was the best treatment that was higher 8.28% than CK;in terms of economic benefit,except treatment 1 other fertilizer products treatments were higher than CK,especially treatment 5 and 4 were more 18.70% and 11.70% than CK.

To explore the influence of different fertilization measur es on soil temperature change, the 10 cm soil layer soil temperature was continuous monitored in the treatments of NPKM, NPK, M and CK of a long-term fertilization experiment.The results showed that the 10 cm daily variation of soil temperature was sine curve and the soil temperature under different fertilization conditions reached maximum at 15：00—17：00, lowest 7：00—9：00. Compared with the control, the average temperature and accumulated temperature in different fertilization treatments were lower and the differences among them were biggest in the tuber growth period. The average temperature in NPKM, NPK and M were lower than CK respectively by 1.7℃, 1.3 ℃ and 1.1 ℃. The accumulated temperature in NPKM, NPK and M were lower than CK respectively by 86.0 ℃,83.0 ℃ and 68.0 ℃.

Slow/controlled release fertilizer is an effective method to improve utilization rate of fertilizer. Natural polymer coated has the features of a wide range of sources,biodegradable and low price,it can be used to coating of slow/controlled release fertilizer by modification.In this paper,it summarized the types of modified natural polymer coating and it also summarized and prospected the application of modified natural polymer coating in slow/controlled release fertilizer.

Based on growing alfalta in the third year in field of sah-aftected land in Hetao, orthogonal experiment was set totest the influence of production and quality- by using different tertilization combinations of nitrogen, phosphorus and potassium.The results showed that fertilization significantly increased the production of altalfa and P was better than K and less N wasbetter than more N ;alfalta production reached maximum value of 8 428 kg/hm2 while the combination was N2P6K4, which was48.4% higher than the control group.Altalth highest economic benefits was 196.2 yuan/667m2 and income rate reached 38.2%while the combination was NOP2K2. Fertilization combination of N-P, N-K and P-K can significantly increase the contents ofcrude protein and crude tat, but with the increasing of tertilizing amount, the growth trend showed a tendency of decreasing.

Potato is a typical K-favoring crop and has a great demand on potassium. However, shortages and over-use of potassium are common existing in agricultural production, therefore, it is essential to understand well about the potassium nutritional characteristics of the potato, based on which to conduct the appropriate nutrition management and determine the optimum rate of potassium. The establishment of potassium nutrition diagnosis in field will be beneficial for potassium fertilizer application precisely and timely. In addition, a new diagnostic method was proposed to provide a reference for the field potassium nutrient management of potato.

To assess the diversity of fungi in soil of Great Khingan forest, the forest surface soil around the Ecosystem Station ofGreat Khingan was collected. Then based on ITS gene,the Miseq high-throughput sequencing technique was applied to discoverthe diversity of fungi in the soil. The resuhs showed that obtained 3 260 ITS sequences could be usable. At the divergence levelof 0.03, these sequences were divided into 51 OTU. The alpha diversity indexes namely Shannon,coverage, Chao value and acevalue were 0.8189,85.60% ,85 and 155, respectively. The ITS sequences were originated from Basidiomycota, Ascomycota,Zygomycota and some unknown tungal taxa, of which the predominated was Basidiomycota with the highest ratio of 97.91%.

The test was identified agronomic traits, yield and disease resistance for the introduction of six new varieties of corn. It is very important in growing these varieties in Liangeheng county.The results showed that the yield sequence was Fengtian 843〉Fengtian 12〉Syngenta 408〉Fengtian 1 〉NingYu 212〉Qindan 683〉 Sidan 19 （CK） ; all testing varieties were not seen big spot, small spot, stem rot, rust plant. The introduction of six varieties were available to generalize in the region.

Although Salix plants are abundant with various species and with great potential for development,Salix plants have been rarely used presently. Collection and investigation of wild Salix plants had been conducted in some areas of Chifeng,Inner Mongolia. The characteristic, habitats and application potential of 14 species Salix plants was described and appraised in order to offer evidence for exploitation of wild Salix plants in the future.

Kytorhinus immixtus Motschulsky was the major pests of seed of Caragana. Effects of 2 insecticides in different concentrations to control K. immixtus were compared. It showed that insect fruit rate of 50% Malathion EC was（5.47±0.11） % after 900 times spraying, compared with（10.67 ±0.31）% in CK. Control effect of different kinds of insecticides with different concentrations were also good, with insect fruit rate（8.93±0.18）% after 50% Malathion EC 1200 times and 50% Sumithion EC 500 times. Insect fruit rate of 50% Malathion EC 900 times and 50% Sumithion EC 500 times was（10.00 ±0.23）%.Using 50% Malathion EC 900~1200 times and 50% Sumithion EC 500 times together could be recommended to control K.immixtus in production.

In this experiment, using Kexin 1 as the material,the effects of different irrigation treatment on the physiological characteristics of potato were studied. The results showed that no irrigation at seedling stage, the activity of SOD, POD was high and the contents of free proline and soluble protein was also high, which can enhance the drought resistance of plants.With the irrigation at tuber formation,expanding stage, the activity of SOD,POD were increased, the content of soluble protein were increased and the increment of MDA and free proline decreased, which can promote the growth of potato.Irrigation at mature stage had no significant effect on physiological characteristics.

This paper discussed the effects of potassium fertilizers varieties and potassium application stage on yield and quality of potato by field experiment. The results showed that potassium fertilizer application had yield-increasing effect on potato production. The yield-increasing effect had manifested as irrigable land 10.9% and rain-fed 12.7%. Muriate of potash, potassium sulphate and nitrate of potash did not have obvious different effect on potato output. The sequence of fertilizer application stage effect on output was basal application 〉half dressing and basal application 〉dressing with no obvious differences. The potassium fertilizer application could increase the proportion of potato which the sequence was basal application〉half dressing and basal application〉dressing and the fertilizer varieties had no difference for potato proportion. The potassium fertilizer application had decreased the color value of fries and content of reducing sugar, the sequence of reducing sugar was potassium sulphate 〉muriate of potash〉 nitrate of potash. In addition, the potassium fertilizer application also had increased the content of starch, but the potassium fertilizers varieties and potassium application stage had no obvious difference effect on content of starch and color value of fries. The fertilizer utilization was 37.1% for rain-fed potato and 37.3% for irrigable land potato. Muriate of potash application effect was higher than others in potassium fertilizers varieties aspect. In potassium application stage, the fertilizer utilization effect was basal application〉half dressing and basal application〉dressing. Finally, every tons of potato production need assimilate 6.16 kg K2O in irrigable land and 4.99 kg K2O in rain-fed land.

Establishment of high standard farmland was to improve or delete the factors which negatively affected soil quality,to completely enhance soil quality, to realize the target of high yield and high resource use efficiency. This was the main work of soi1 management during ＂12th Five-year Plan＂ in china. Through concluding the situation of high standard farmland basic information, it showed that it was of import for establishing high standard farmland and improving soi1 fertile.

This paper analyzed the development process in Chi na about agricultural ecological climate suitability since the1980 s by partitioning three stages of research including the definition of theory, the improvement of the theory and the application of the theory. This article listed the main research direction and method of each period and put forward prospect for future research such as expanding the applied research area and strengthening characteristics of infrastructure agricultural crops and combined with WOFOST model in order to better realization of the dynamic and quantitative evaluation of suitability in each growth stage.

Lilium longiflorum as the research object, with MS as the basic culture medium,optimize the lilies explant best way to sterilization, eventually choose 5% concentration of sodium hypochlorite, sterilization time for 10 rain. Based on 8 additional different concentrations of 6 - BA, NAA of MS culture medium, according to a study in MS＋I mg/mL 6-BA＋0.1 mg/mL NAA medium lilies proliferation effect was good, proliferation coefficient of 6.88. Sucrose concentration was 60%, the best bulb effect in vitro, the produce rate of bulbs produce bulbs rate of 100%, bulb was 1.12 cm in diameter, mass was 2.26 g. In 1/2 MS ＋ 0.5 mg/mLNAA medium to take root, rooting rate of 100%, average root length was 2.83 cm. In the end, getting the tube seedling transplanting, the survival rate was 83%.We established Lilium longiflorum system of tissue culture technology and provided certain technical guidance for chifeng area.

The seeds of rape variety green petiole F1 treated with different temperature and duration. The results indicated that the difference of treatment temperature and time on the germination rate of rape seeds was significantly affected by the addition of 60 ℃4 h.Seedling emergence rate and the ratio of the film were highly significant level.50 ℃ ,4 h after the hot processing plant height of seedling increased 0.39% than the control group. Leaves number increased by 11.11% than the control. The maximum leaf area and root fresh weight compared with increased 2.2% and 16.32% respectively.50 ℃, 12 h after processing the root fresh weight increased by 17.16% than the control group. After processing of aboveground fresh weight was lower than control group,but 60 ℃, 12 h treatment of aboveground fresh weight of the highest. The plant height, number of leaves, maximum leaf area,fresh weight of both aboveground part and underground part of plants were significantly increased with treatment 50 ℃. Therefore 50 ℃ was the best treatment for rapeseed treatment.

Studing the differences of potato growth and yield formation under different irrigation quantity with drip irrigation, the relationship of potato moisture absorption and yield formation and regulatory mechanism were theoretically verified, to determine the potato irrigation system of water saving and high yield.With the increase of irrigation quantity, plant height, stem diameter, the dry weight of ground organs and tuber yield were unimodal curve change with drip irrigation under membrane. Yield was the highest when irrigation quantity was 1 650 m3/hm2, which was the most suitable irrigation quantity. A moderate amount of irrigation can promote the plant growth and was beneficial to delay the plant senescence.

According to the situation of high investment and yield on corn production in irrigation area in Hetao,we conducted experiment on high density and high yield corn cultivation of one hole double plants in Linhe and Hanggin Rear Banner in 2015 to further explore yield potential. The yield was up to 1 120.50~1 239.69 kg/667m2, 14.12%~28.2% increasing in wide coated corn high yield field and the average benefit was 464.1 yuan per 667m2. The results in increasing investment and yield were obvious. In a word, the experiment investigates that one hole double plants mode was a simple and feasible method on high density and high yield corn cultivation in irrigation area in Hetao with high market value.

Inner Mongolia reaches of the Yellow River and its tributaries are rich in fish resources, which is an important part of fish resources in the Yellow Ri＇~er. After analysis and research of the fish fauna in the region, we found five families, three orders,ten subfamilies,twenty-five reaches attributed to 5 area respectively,The investigation showed that five kinds of fish can＇t be find related information in Inner Mongolia section of the Yellow River over the past years.

This paper was based on the early stage and mode rn times of development as the main line at domestic and overseas and rainwater agriculture was introduced. The recent research progress of rainwater agriculture from drought in arid, wind erosion prevention measures, researches, soil improvement, water keep moisture complement, more representative in the rainfed agriculture at domestic and overseas research results were introduced for example and the rainwater agriculture research development direction, the difference of rainfed agricultural research methods at domestic and overseas and the problems existing in the rainfed agricultural research of rainfed agriculture research at domestic and overseas were reviewed and prospected.