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用盆栽方法研究了底肥量、追肥期对夏大豆主要产量性状的影响。结果表明：底肥量、追肥期对夏大豆株荚数、株粒数、百粒重、株粒重都有极显著影响。底施２０克·株￣（－１）复合肥比不施底肥株产量增加３２％，结荚末期追尿素３克·株￣（－１）比不追肥株产量增加４３．２％。追肥期对株产量影响大小的顺序为：结荚末期＞鼓粒中期＞始花期＞分枝期＞不追肥。追肥过早，株荚数、株粒数都减少。底施２０克·株￣（－１）复合肥，于结荚末期追施氮肥，株产量最高。
Pot experiments were conducted to study the effects of base fertilizer and top dressing on the main yield characters of summer soybean. The results showed that the amounts of base fertilizer and top dressing had a very significant effect on the number of pods, the number of grains, the weight of 100 grains and the weight of grains per plant of summer soybean. The yield of 20 g · plant ~ (-1) compound fertilizer increased 32% than that of the non-substrate plant, and the yield of 3 g · plant -1 in the late pod stage was 43.2% higher than that of the non-dressing plant. Topdressing effect on plant yield in the order of magnitude: late pod> midgut> flowering> branching> not topdressing. Top dressing too early, the number of pods, strains reduced. At the end of applying 20 grams · strains ~ (-1) compound fertilizer, topdressing nitrogen fertilizer at the end of the pod, the highest yield strains.