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近几年来,我区多数地方的大豆普遍存在着大量落花落荚,秋病减产的严重现象。这除了品种混杂退化外,主要原因是栽培管理粗放,栽培技术不当。只要改进栽培技术,合理施肥,产量是可以提高的,具体办法是: 一、提倡大豆施底肥,巧施氮肥,重施磷钾肥。为了使大豆幼苗生长健壮,播种时最好每亩施用磷肥60—80市斤,钾肥60—70市斤,配合农肥2000市斤作底肥。大豆苗期(即三叶期)根瘤尚不发达,每亩补给氮素化肥15—20斤作追肥,可以促进幼苗的生长和根瘤的发生,对日后增加固氮量极为有效。二、防止花荚脱落和种子停止发育。花
In recent years, soybeans in most parts of our region have suffered from a large number of falling falling pods and a serious fall in autumn disease. In addition to this species mixed degeneration, the main reason is extensive cultivation and management, cultivation techniques inappropriate. As long as the improvement of cultivation techniques, fertilization, the yield can be improved, the specific approach is: First, to promote soybean base fertilizer, Qiao nitrogen fertilizer, re-apply P and K fertilizers. In order to grow robust soybean seedlings, sowing the best per acre 60-80 kg of phosphate fertilizer applied, 60-70 kg of potash fertilizer, with fertilizer 2000 kg for the base fertilizer. Soybean seedling stage (ie, three-leaf stage) nodules are not yet developed, 15-20 kg of nitrogen fertilizer per acre for top dressing, can promote the growth of seedlings and nodules, the amount of nitrogen in the future is extremely effective. Second, to prevent flower pods shedding and seed development. flower