大豆打尖能对豆株内部营养物质起调节分配和减少消耗的作用;更由于改善了大豆田间的小气候,能使豆株的光合作用较正常地进行,可减少花荚脱落,增加产量。但是,各地经验证明,大豆打尖必须选用相应的品种,掌握好栽培技术,否则不一定都收到良好效 Soybeans hit the tip of the bean plant can regulate the distribution of nutrients and reduce the role of consumption; but also to improve the soybean field microclimate, bean plants can make the photosynthesis more normal, can reduce flower pods shedding, increase production. However, experience from all over the world has proved that soybean must be spiked with the appropriate varieties and cultivated well, otherwise it may not always be well received