秋粮作物由营养生长转入生殖生长为主的阶段后,对磷、钾元素的需要量大大增加,单靠根系吸收和底施磷钾肥,不能满足需要。这时,采用叶面喷施或灌注水溶性磷钾肥,可以补充体内磷钾元素不足,促进有机物的运输和淀粉合成,促进碳水化合物和含氮化合物的转化,对加快灌浆,促进早熟,提高粒重,增加产量效果 After the stage of turning the grain crops into vegetative growth by vegetative growth, the demand for phosphorus and potassium elements increased greatly. The absorption and application of phosphorus and potassium fertilizer alone can not meet the needs. At this time, the use of foliar spraying or water-soluble phosphate and potassium fertilizer can supplement the body of phosphorus and potassium deficiency, and promote the transport of organic matter and starch synthesis, and promote the conversion of carbohydrates and nitrogen compounds, to speed up the grouting, promote early maturity, improve grain Heavy, increase output effect