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采用三因素裂-裂区试验设计,以东81735(寡分枝)、东03-2176(中等分枝)和东0331(多分枝)3个品种(系)为主区,4个种植密度(10、15、20和24万株.hm-2)为裂区,4种施肥量(300、500、700和900 kg.hm-2)为再裂区,研究了不同密度和施肥量对不同分枝类型大豆品种(系)产量的影响。结果表明,在不同肥密条件下,群体叶面积指数(LAI)呈单峰曲线变化,且最大值出现在盛荚期。3个品种的LAI峰值都出现在密度24万株.hm-2和施肥量900kg.hm-2的组合中。中等分枝品种东03-2176在密度为20～30万株.hm-2,施肥量为700～900 kg.hm-2时获得较高产量;多分枝品种在密度为20万株.hm-2,施肥量为900 kg.hm-2时获得高产。
The three-factor fissure-rift zone design was used in this experiment. Three varieties (lines) of east 81735 (oligoculture), east 03-2176 (middle branch) and east 0331 (multicomponent) 10, 15, 20 and 240 000 plants.hm-2) were split and four different fertilization rates (300, 500, 700 and 900 kg.hm-2) Effect of branching type soybean varieties (lines) yield. The results showed that under different conditions of fertility and density, the leaf area index (LAI) showed a single peak curve, and the maximum appeared in Sheng podding period. The LAI peaks of three cultivars appeared in a combination of 240 000 hm-2 and 900 kg.hm-2. The middle-grade variety East 03-2176 had a higher yield at a density of 200,000 to 300,000 hm-2 and a fertilizer rate of 700 to 900 kg.hm-2. The multi-branched variety had a density of 200,000 hm- 2, high yield was obtained when the amount of fertilizer was 900 kg.hm-2.