无限结荚习性的大豆品种 ,在初花期 ,摘去主茎顶端 ,能提高产量 ,特别是植株生长旺盛的田块 ,摘心增产效果更为明显 ,其增产原因是 :一、摘心可以减少植株体内养分的消耗 ,使叶色浓绿 ,叶片变厚、变大 ,从而增加光和面积和养分的积累 ,促使成粒率增高 ,秕粒减少而增加产量。二 Infinite pod habit of soybean varieties, at the beginning of flowering, picking off the top of the main stem, can increase the yield, especially the vigorous growth of the field plots, the effect of topping more obvious increase its yield is due to: First, topping can reduce the in vivo Nutrient consumption, the leaf color dark green, leaf thickening, larger, thereby increasing the accumulation of light and area and nutrients, to increase the rate of granulation, reducing grain and increase production. two