Effects of Different Fertilizer Levels and Planting Densities on Yield and Quality of Soybean in Early Mature Soybean Region of Hebei

To investigate high yield and fine quality cultivation measures of soybean in early mature soybean region of Hebei,the effects of four fertilizer levels and four plant densities on agronomic character,yield and quality of soybean were investigated by split plot design in Baoding and Qingxian. The results indicated that branches,valid pods per plant,seed weight per plant,100-seed weight,yield,content of protein and content of oil had no significant differences under different fertilizer levels. The yield was highest under the fertilizer level of N 75. 0 kg / ha,P2O590. 0 kg / ha,K2 O 60. 0 kg / ha. Branches,valid pods per plant,seed weight per plant and yield had significant differences among different densities. Yield in Baoding site was highest under the density of 22. 5 × 104 plants / ha,which was 3 350. 00 kg / ha; Yield in Qingxian site was highest under the density of 21. 0 × 104 plants / ha,which was 3 108. 94 kg / ha.Protein and fat contents showed significant differences between different locations,fat content was higher( 19. 41%) in Baoding and protein content was higher( 45. 47%) in Qingxian. Protein and fat contents kept stable among different combinations of treatment at the same location. The suitable cultivation measures of soybean in early mature soybean region of Hebei were fertilizer level of N 75. 0 kg / ha,P2O590. 0 kg / ha,K2 O 60. 0 kg / ha and the density of 22. 5 × 104 plants / ha.