Effect Of Optimized Fertilization On Dry Matter Accumulation And Yield Of Soybean With Different Row Spacing

The experiment was 2013-2014 conducted in beidahuang production and construction corps 852 farms. Different nutrient management practices on soybean yield comparison field test, which is based on Kennong 23 as test materials in field experiment, showed that the optimum fertilization significantly increased soybean production. On this basis, under the premise of nutrient regulation, nutrient regulation and Cultivation supporting measures were studie d in 2014. In order to study the effects of cultivation patterns and nutrient regulation on dry matter accumulation and yield of soybean. the plot experiment was conducted with Ken Nong23. The optimized fertilization(D) and compared fertilization(control, N) were the main plots, while cultivation patterns treatments, 4 lines、5 lines and 6 lines on the ridge of 130 cm in width, were the secondary plots. Under the same planting density optimization of fertilizer by improving individual particle number and 100 grain weight, yield fertilization increased by 10.4% compared with the control in 2013. Under the interaction of nutrient regulation and cultivation patterns in 2014, Study on dry matter accumulation, yield and quality of soybean.The results were as follo ws:Under the same fertilization level, leaf area index and dry matter accumulation increased with the identity, the performance of 6 lines on the ridge(density of 34000 plants / hm2) > 5 lines on the ridge(density 32000 plants / hm2) > 4 lines on the ridge(density of 30000 plants / hm2).Under the same cultivation pattern, R6 stage, the whole canopy which was under optimize fertilization leaf area index fertilizer treatment was significantly higher than the control, D-6 compared with N-6 increase 58.8% to 5% significance level, optimized fertilization upper leaf area index and full-canopy leaf area index, which is similar.D-5 compared with N-5 increase by 40%, D-6 compared with N-6 increase by 8.8%, to 5% significance level; Under the D-6 cultivation condition, the difference of the leaf area index between the middle and bottom leaf area reached 5% significant level. Optimizing fertilization improved the whole plant dry matter accumulation, D-6 compared with N-6 the whole canopy dry matter accumulation was increased by 7.6%(R6) and 43.1%(R8) R6 and R8 stage, The optimized fertilization also increased the dry matter accumulation in soybean on the R4 and R6 stage, which guaranteed that the soybean leaves had stronger photosynthetic productivity, and extended the functional period of soybean leaves. Optimized fertilization increased the dry matter accumulation of podding stage and podding stage of soybean, canopy stems, to improve the ability of soybean lodging has an important role. The optimized fertilization increased the dry matter accumulation in the whole canopy of R6, which laid the foundation for the high yield of soybean.under the interaction of nutrient regulation and cultivation patterns, optimize fertilization + 6 lines on the ridge cultivation patterns in the highest yield than other treatments, the yield increased by 29.5% compared with the control in 2014, comprised protein content of soybean in different canopy layers of in 2014, we found that the optimized fertilization promoted the accumula tion of soybean protein and fat content in physiological mature stage, and protein content showed a rising trend with planting density increased. The fat content decreased with the increase of planting density. The treatment with the density of 340000 plan ts /hm2 combined with optimized fertilization and 6 lines on the 130 cm ridge were the most reasonable planting pattern for high yield and good quality for local soybean production.