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采用裂区试验设计,以5个品种(吉林20,21,22,26,27号)为主区,设4个播种密度(16,18,20,22株/平方米)为副区,分析了各品种不同密度条件下群体产量差异的显著性及其个体植株产量因素和主要性状的反应。结果表明,4个密度对各品种群体产量基本无显著的影响;对构成群体产量的基本因素单株产量、荚数/株、粒数/株以及分枝数均有显著的影响,但对百粒重和粒数/荚的影响则不显著。在适宜的密度幅度条件下,大豆群体产量不随密度而显著提高或下降,主要是由于单株产量(包括粒数和荚数/株)的调节作用,与百粒重,粒数/荚的关系不大。
Using split-plot experimental design, 5 varieties (Jilin 20,21,22,26,27) as the main area, set four planting density (16,18,20,22 plants / square meter) as a sub-area, analysis The significance of population yield difference and the reaction of individual plant yield factors and main characters under different densities of different varieties were studied. The results showed that the four densities had no significant effect on the yield of each variety, but had significant effects on the yield per plant, number of pods per plant, number of grains per plant and number of branches per plant, The effects of grain weight and grain number / pod were not significant. Under proper density range, the yield of soybean population did not significantly increase or decrease with the density, which was mainly due to the regulation of single plant yield (including grain number and pod / plant), the relationship with 100-grain weight and grain number / pod Not big.