In this study, 15 oat germplasm resources of China and abroad were used, and their phenological period, growth period and 15 main agronomic characters had been tested. The characteristics of 15 oats were defined by variance analysis, correlation analysis, principal component analysis and cluster analysis. The results show as follows：Growing period of germplasm W3, W6, W11 are 90-100d, W1, W2, W4, W5, W9 are 100-110d, W8, Wl0, W12, W13, W14, W15 are more than 110d,belonging to precocious, medium and late ripening type, respectively. All of them can grow at local condition and reach seed maturation.Based on the main agronomic characters, the 15 oat germplasm materials can be grouped into 5 types, and the clustering results have some correlation to the provenance of germplasm.The per plant seed weight has significant positive correlation with per plant panicle number and per plant seeds number, the 1000-grain weight was positively correlated with seed length （P〈0.01）.Germplasm W14, W15 and W2 have better comprehensive agronomic characters, which can be used in the priority oat breeding of this region, W13 has the highest per plant yield, it has great potential of forage production.

The dry matter accumulation and grain and straw yield of Baiyan No. 2 under different sowing dates and fertilization levels were studied to determine the optimal sowing date and suitable fertilization amount of oat during the critical period of water requirement and the rainfall abundant period in this area. The trend diagram of dry matter accumulation in different period of oat growth process was drawn and the graph was S - shaped curve. The dry matter accumulation, grain and straw yield of oat under various treatments were comprehensively analyzed and found that under different production purposes,the combination of agronomic measures could increase the yield of grain and straw by adjusting sowing date and fertilization level. It could be seen that if the application of pure nitrogen in agronomic measures could be in the range of 66.85-78.11 kg/hm^2 and the application of pure phosphorus could be in the range of 31.90-37.05 kg/hm^2 grain yield of more than 2 600 kg/hm^2 can be harvest by sowing on May 28 to 29.

In order to study the salt tolerance of Beta vulgar seedlings to NaCI salt at the third leaf stage, pot experiments were carried out with sugar beet variety H003 as the experimental material. The experiment consisted of 10 concentrations of NaCl, and the quality of NaCl in each treatment accounted for 0%, 0.1%, 0.2% ... 0.9% of the potted soil, respectively. Indicators were measured. The results showed that the fresh weight, dry weight and plant height of Beta vulgar reached the highest value at 0.2% salt treatment, and the fresh weight and dry weight at 0.5% stress treatment were significantly lower than the control, while the dry weight reached 0.7% stress treatment was significantly lower than the control. Chlorophyll and suporoxido dismutase（SOD）activity and quality indicators showed the same as the increase of NaCl concentration first increased and then decreased. Malondialdohydo （MDA） content and leaf plasma membrane permeability continued to increase with the increase of NaCl concentration. The growth of sugar beet was not inhibited under the soil NaCl stress of 0.4% or loss in the third leaf stage, and 0.1% - 0.2% NaCl soil environment promoted its growth.

In order to clarify the difference of drought resistance of gramineous forage seedling varieties under repeated drought treatment, 10 gramineous forage varieties were selected, and the emergence rate, root-shoot ratio, electrical conductivity ,chlorophyll content and peroxidase activity of each forage variety were analyzed and compared. The results showed that the emergence rate of Elytrigia trichophora （Ling） Nevsky. was the largest, the emergence rate of Thinopyrum pontivum（Alker） was the lowest, the root-shoot ratio of the （Agropyron desertorum （Fisch.） Schult.） was the largest and the root-shoot ratio of Thinopyrum pontivum （Alker） was the lowest. The highest electric conductivity of Thinopyrum pontivum （Alker） and the lowest of the electric conductivity of Thinopyrum pontivum （Jose）, the largest chlorophyll content of the grass variety is the Agropyron desertorum （Fisch.） Schult., the smallest forage species is Thinopyrum pontivum （Alker）, The activity of peroxidase of the Agropyron desertorum （Fisch.） Schult. was the largest and the lowest in Elytrigia repens（L.） Dasv. The results of comprehensive evaluation showed that the seedlings of Agropyron desertorum （Fisch.） Schult., Leymus racemasus, Elytrigia trichophora （Ling）Nevsky., Thinopyrum pontivum （Jose） had strong drought resistance, while the seedlings of Thinopyrum pontivum （Tyrell）, Thinopyrum pontivum（Alker）, Elytrigia repens（L.）Desv were less resistant to drought. The drought resistance of the other three forage varieties was between 7 forage varieties.

PCR amplification in now strain HC-R of potato wore performed by using 14 screened and suitable ISSR primers, a total of 80 clear and stable bands were detected, which the amplification fragment range from 200 bp to 2 000 bp, and 5.7 bands could be avoragoly amplified with each primer, the percentage of polymorphic bands was up to 100%. Based on the amplification results of 14 ISSR primers, a DNA fingerprint map of HC-R was constructed, digitizing the polymorphic loci screened by each primer reasonable in turn, a 14 bit string：A4694724319A83 was obtained, the bit string could be uniquely identified HC-R as a molecular identity card. The molecular ID can be registered for the next now strain breeding, protecting intellectual property and providing molecular basis.

According to the characteristics of chloride saline-alkali soil in Hotao area,the effects of 201×4 strongly basic styrene anion exchange resin mix with three kinds of acidic materials （humic acid, peat, mono-ammonium phosphate） on the passivation effect of salt and alkali was studied through indoor soil improvement experiment in this paper. The results show that application effect is outstanding when the 201×4 resin application rate is 2%, and mix with peat in 1 ： 1.5 ratio. Compared with the CK, the content of water-soluble Na^＋ in soil decreased by 21.41%, the content of water-soluble Cl- decreased by 34.36%, the content of water-soluble SO4^2- decreased by 87.88% and the content of total soluble salt in soil decreased by 30.64%. The soil pH decreased by 0.78 compared with the single application of 201×4 resin. They could be used as the materials to improve saline-alkali soil in the future.

The effect of 4 different nitrogen treatments on the physiological effect and yield of rice was studied with japonica rice, Lian Jing No.7 as the test material. The results showed that photosynthetic indexes of C, D,were higher than that of treatment B and treatment A （control）;treatment B, treatment C, treatment D and compared with treatment A （control）; yield increased by 38.78%, 53.63% and 54.15%, lodging and mechanical strength with 109.49%, 132.61% and 86.55% as much as treatment A,treatment C with strongest lodging resistance and a high yield; considering yield, lodging resistance and production costs and other factors,C（N 300 kg/hm^2＋ P 67 kg/hm^2＋ K 135 kg/hm^2） is optimal treatment.

In this paper,research on abundance-deficiency index（ADI） of soil N for wheat（SNFW） and appropriate nitrogen fertilizer application rate （ANFAR） conducted in China were systematically summarized. The results showed that the ADI of SNFW in China had not changed obviously in 30 years. There were considerable differences in their ADI of SNFW in different regions,and the ADI of soil alkaline hydrolysis nitrogen for wheat for 60% relative yield （RY） of the complete nutrients treatment except nitrogen （TCNTEN） changed from 21 to 97 mg/kg. Except the Guanzhong irrigation district,Hetao irrigation area and the Hexi corridor,research on ADI of SNFW in China had many blank regions. Soil N deficiency for wheat in China were common, and the abundance-deficiency levels of SNFW focused on level 4~5,and most RYs of TCNTEN were between 60%~80%. For research on ADI of soil nutrient,the number of trial sites should not be too little,and using extrapolating data for the high-end and low-end of ADI should be careful and indicated. ANFAR and the abundance- deficiency level of SNFW are linear negative correlation. ANFAR and the yield goal of wheat are linear positive correlation. ANFAR and the nitrogen fertilizer use efficiency in current season （NFUEICS） are linear negative correlation. When the NFUEICS of 40% and the target yield of 3~12 t/hm^2,the ANFAR for the SNFW abundance-deficiency level 1~7 from high to low are 0~0, 21 ~84,42~168,63~252,84~336,105~420 and 126~504 kg/hm^2, respectively.

To make three varieties of fertilizer comparison test, five kinds of fertilization treatments were put on the same plot under the same density and field management level. The results showed that different varieties and different fertilization treatments had significant differences on sorghum yield. The difference between varieties had the largest effect on yield, followed by the different fertilization forms. In three tested sorghum varieties, red miscellaneous 28 had the highest yield.In different fertilization treatments,the best fertilization method was using DAP150 kg/hm^2 and potassium 150 kg/hm^2 as the seed fertilizer and a one-time applied,and using 225 kg/hm^2 carbamide urea at thejointing stage.

In this paper, a simple summarization of effect of water and fertilizer coupling technology on soil quality. The drip-irrigation technique can reduce the soil-caking compaction, regulate soil temperature, pH, total salt and microbial quantity, and reduce nitrate leaching, thus affecting the soil water and gas coordination near the crop roots.

In this paper,randomized block experiment are adopted. The effects of several different typos of foliar fertilizers on the economic characters and seed yield of oil flax in dry land were compared by field experiments. The results show that the Brassinolido-gibborollin has certain promoting effect on oil flax vegetative growth. Plant height increased 6.03% ; potassium dihydrogon phosphate ＋ urea can significantly improve the oil flax seeds per fruit, increased 7.93%; Guoguang dilute biotin, bios and KH2PO4 ＋ urea treatment can significantly improve 1000-seed weight of oil flax, increased 5.49%,4.14%,3.95%. Guoguang dilute biotin and KH2PO4 ＋ urea treatment on seed yield reached 1 446.22 kg/hm^2 and 1 433.87 kg/hm^2 respectively, increased by 19.02% and 18.00%. The increased production was significant. It was proved that spraying foliar fertilizers containing amino acids or large elements on oil flax seed can effectively promote the grain formation and filling process of flax, and increase 1000-seed weight and seed yield of oil flax. It has a significant effect on the reduction （duo to the removal of fortilizors） of yield in the late stage of birth.

In order to understand the effect and best use of selenium enriched power to spring wheat, six locations in Bayannur were selected for random plot trials in different locations. The results showed that spraying 2 times of selenium enriched fertilizer increased 605.25 kg/hm^2 and increased by 8.8% compared with the control CK2,and 1 time selenium enriched fertilizer increased the yield compared with the control CK1 ,the yield increased by 350.25kg and increased range to 5.13%;Spraying selenium-rich fertilizer can significantly increase the number of grains per spike, spike weight, 1000-grain weight and bulk density.

In this study, the toxicity of six fungicides against Fusarium oxysporum were tested by the mycolium growth rate methods,6 fungicides include 50% captan WP, 99% hymoxazol TC, 80% hymoxazol Thiram WP, 70% thiophanato-mothyl WP, 25% phonamacril SC and 30% Motalaxyl hymoxazol AS. The results showed that phonamacril and thiophanato-methyl had the best toxicity and their ECho were 0.044 1 mg/L and 0.112 7 mg/L respectively.

To clarify the relationship between greenhouse temperature and humidity and tomato gray mould ,and the sensitivity of different medicaments to the pathogens, the greenhouse temperature and humidity and disease incidence were observed and laboratory toxicity tests were performed. The test production curve showed that the low incidence of the greenhouse reached the peak in April,at this time the temperature was 17.3%,and the relative humidity was 75%~90%. It is found that low temperature and high humidity are the necessary conditions for the disease of tomato gray mould. The virulence of Botrytis cinerea to four insecticides were measured and calculated ECho the colony diameter by mycelium growth rate method results showed that cultured for 10 days, the inhibitory effect of medicament in order,70% pyrimethanil 99.97%〉60% thiabendazole 83.43%〉80% Thiophanate-methyl 77.65%〉50% iprodione 75.81%.

To reduce the harm of Grapholitha molesta Busck,mating disruption was initially introduced in Wuhai. An experiment using mating disruption to control Grapholitha molesta Busck was carried out in peach orchards. The result showed that mating disruption rate of mature insects was up to 94.8%; the control rate of fruit-boring and top-breakage were up to 85.3% and 87.5%, respectively. There was significant economic benefit with 3 times less usage of insecticide, which was 10 350 yuan/hm^2 higher than before.

Organic fertilizer, compound fertilizer and now biological modifier, EM （TM） were used modified alkaline soil in Tumochuan plain. Throuth applacation of modifor EM, soil salt descend range was 23.21% to 48.43%, pH decline range was 3.88% to 10.63%,and soil basicity reduced range between 3.02% and 4.06% ,but nutrients in the soil were increased. Available phosphorus and available potassium and organic matter,soil microbial biomass carbon respectively increased more than CK by 43.41%, 32.37%, 39.75%, 55.68%. The results showed that the biological modifier - EM improved effect.

As soil in different functional areas of Qigihar city for the research object, analysis of heavy metal pollution and study the spatial variability feature using of Arc GIS in order to provide a reference basis for the overall construction of regional development planning, comprehensive management of the environment and landscape construction and plant configuration. The results showed that Zn, Pb, Cr, As, Hg of the surface soil in that area whoso average content was not more than second level national standard and background value of province,variation of Zn, Pb, Cr were high （CV〉0.36）, and Hg was at low variability; spatial of surface soils accumulated obviously. Different functional areas of heavy metals Zn, Pb, Cr, As and Hg had significant difference （P〈0.05）; different function area in Qigihar city pollution order were road area〉 residential area〉commercial area〉 park area〉 urban area〉industrial area〉storage area. The spatial distribution map showed the city northwest, south and east corner of the pollution were serious, central and southeast were relatively little; Zn, Pb and As had similar spatial distribution characteristics of the high content of the southeast and little content of northwest; the content of Cr element in the southeast and northwest was high,low content Hg in northeast;element distribution was relatively special, it showing annular diffusion trend from midwest to the northeast, but the content was little. These spatial distribution characteristics were closely related to the overall urban construction activities in our city. On the whole, 5 heavy metal elements show heterogeneous patch distribution in Qigihar.

Phoma stem canker, the pathogens are consist of Loptesphaoria maculans and Loptesphaeria biglobesa. Loptesphaeria maculans becomes the major restrict factor for rapeseed industry development worldwide except China and India, which caused serious economic losses in most of the major production areas. We firstly identified Loptesphaeria biglobesa existed diseased plants in 1999 and the occurrence and damage caused by Loptesphaeria biglobesa showed sprawling trend in China, the damage areas expanded to 42 counties of 14 provinces in just dozens of years. But for it did not cause significantly yield loss, there were no enough attention to Phoma stem canker. Study on the occurrence, epidemic and evolution regularity of Phoma stem canker worldwide,we are afraid of Loptesphaeria biglobesa replaced by Loptesphaeria maculans gradually, Loptesphaeria maculans threats to oilseed rape and other cruciforous crops of China.

Potato was the traditional dominant crop in Inner Mongolia. With the rapid increase of area in 1990s,the problem of diseases and pests was becoming more and more serious,the occurrence characteristics of diseases and pests in different periods and the existing problems in the control were analyzed and summarized. And countermeasures and suggestions to the current problems were put forward.

The experiments were performed with two factors of randomized complete block design （RCBD） to study the effect of different planting method and plant spacing on agronomic traits and yield of pepper for outdoor in summer in Chifeng of Inner Mongolia. Two planting methods （single plant cultivation and double plant cultivation） had the same yield of pepper. Single planting cultivation of pepper had significant increase in plant spread, average fresh fruit weight, average fruit yield per plant and plant height. The results indicated that single planting cultivation of pepper for outdoors in summer with plant spacing 24 cm is the preferred planting method for pepper production in the Chifeng of Inner Mongolia.

In order to promote the variety, a comparative study of drought tolerance of three Crape myrtle varieties was carried out the fuzzy mathematics subjection function method was used to evaluate the drought resistance of three varieties from the six physiological and biochemical indexes, which are prolino, soluble protein, soluble sugar, malondialdohydo, chlorophyll and glutathiono. Combining with the result of observation leaves,drought tolerance of ＇Shao Nv Hua Yu＇ is slightly stronger than ＇Northern Rose Bengal＇ and far stronger than ＇rod rocket＇. In northern of Jiangsu,promotion of the variety needs only normal moisture management.

In this study, the three physiological and biochemical indexes including SOD, MDA and Pro contents were measured and analyzed on annual dormant branches of six main table grapes species after low temperature treatment in Baotou Runzeyuan agricultural science and technology professional cooperatives.The six experimental species were Jasmine Grape, Kyoho Grape, Vitoria Grape, Summer Black Raisin Grape, Jingya Grape and Muscat Grape, respectively. The results showed that there were significant difference among SOD, MDA and Pro contents （P〈0.05）,and the subordination value changed from 0.42 to 0.64. A comprehensive evaluation on cold-resistance of the six different varieties was conducted by fuzzy membership function, the order of cold-resistance of the six main table grape species was Summer Black Raisin Grape 〉 Vitoria Grape = Jingya Grape 〉 Jasmine Grape 〉 Muscat Grape 〉 Kyoho Grape. Subordinative Level （SL） of cold- resistance was both Middle Resistance （MR） and Lower Resistance （LR）. Furthermore, the SL of Summer Black Raisin Grape, Vitoria Grape and Jingya Grape were MR （the third level）, the others were LR （the forth level）.

Dual-wavelength spectrophotometry was applied to determine the amylose and amylopectin content in lotus root from Hanzhong with iodine as coloring agent. According to the color characteristics of amylose mixed with iodine forming blue mixtures and amylopectin mixed with iodine forming amaranth mixtures, and the determination results of Dual- wavelength spectrophotometry, the determination and reference wavelength of amylose were 511 nm and 582 nm, respectively,Y =0.046 43x＋0.011 67 （r^2=0.998 7）; the determination and reference wavelength of amylopectin were 614 nm and 549 nm, respectively,Y=0.004 6x＋0.002 55（r^2=0.996 8）. The amylose and amylopectin content was different in different varieties of lotus root from Hanzhong, the recovery rate of both amylose and amylopectin ranged from 98.07% to 101.3%. The RSD of stability was 1.95% and 1.85%, and the RSD of precision is 0.26% and 0.11%,respectively. The results showed the method Could accurately analyze the starch in lotus root.

We monitored fishery resources in September 2013 - July 2014,Four surveys were conducted throughout the year,we preliminary understood of the current situation water quality and plankton of the reservoir. The concentration of phytoplankton in the Delingshan reservoir is very rich, and the average biomaes reaches 21.58 mg/L. The algae biomass was the largest,with an average of 11.7 mg/L. Higher phytoplankton content is a sign of eutrophication of water body, The average biomaes of zooplankton was 0.473 mg/L. The average biomass of benthos is 2.43 g/m^2. Through estimating the phytoplankton provides fish productivity 110.0 kg/hm^2, zooplankton provides fish productivity 4.02 kg/hm^2,calculated at 133 hm^2 squared, Delingshan reservoir natural bait biological provides fish productivity with 15 507 kg every year. Summarized the results of the survey, and we put forward the preliminary suggestions for exploitation and utilization of Delingshan reservoir fisheries.

The Hetao irrigation district has always been an important irrigated agricultural area and green agricultural products base in the Inner Mongolia Autonomous Region even in China. Among those products, the spring wheat is the main food crop of the Hetao irrigation district. Calculating the area, the growth of spring wheat in the Hetao area by remote sensing is essential to master the production accurately and structure adjustment of planting. The method that real-time monitoring data combines with GF-1 satellite image is used to extract spring wheat area and growth information quickly, and the adaptability of this method in monitoring agriculture by remote sensing for Hetao irrigation district was discussed in the paper. Spring wheat area was extracted by GF-1 WFV data on May 18,2017. On the premise of ensuring the spatial distribution of spring wheat, it used NDVI to represent the crop growth situation and used three phases of ground data and remote sensing data to constitute time series of the wheat in the study area. The extraction precision of the area was 93.51% and the Kappa coefficient was 0.805 3. Based on the results of remote sensing quantitative evaluation, the growth of vegetation index was linearly increased with the biomaas in the ground, and made up for the lack of ground artificial visual evaluation. The results showed that the method has good applicability and high promotion value in the Hetao area.

The climatic conditions of low temperature and arid are the main limiting factors on cultivating of artificial herbage in Hulunbuir.Tho main meteorological factors on affecting forage adaptability were determined in this study based on the biological characteristics, yield and climatic suitability of forage varieties;the membership function were established of each factor and comprehensive index by fuzzy mathematics and analytic hierarchy process;the planting rogionalization map based on GIS was generated and the reasonable planting suggestion was proposed.