植物生长调节剂对大豆产量及其构成因素的影响

以黑农35号大豆为材料,在分枝期和初花期喷施5种植物生长调节剂,研究植物生长调节剂对大豆单株荚数、单株粒数、百粒重及产量的影响。结果表明,大豆分枝期和初花期经5种药剂处理后,生根壮苗激活剂增产效果最佳,产量增加381.37 kg/hm^2,达到极显著差异水平;喷施烯效唑产量分别增加189.29和222.63 kg/hm^2,达到显著差异水平。增产原因是喷施植物生长调节剂后,大豆单株有效荚数、单株粒数和百粒重均有所增加。

Effects of Spraying Plant Growth Regulator on Yield and Its Components of Soybean

The effects of five plant growth regulators on pod number per plant,grain number per plant,100-grain weight and yield of Heinong 35 were studied in branching and early flowering stages of soybean.The results showed that the effect of activator for rooting and seedling strengthening was the best after treatment with five chemicals at the branching and early flowering stages of soybean.Yield increased by 381.37 kg/hm^2,respectively,reaching extremely significant levels,and yield increased by 189.29 kg/hm^2 and 222.63 kg/hm^2 by spraying uniconazole.This study has guiding significance for reducing production costs and promoting farmers’ income,and can be widely applied.