土壤中的磷一般不能满足作物需要,必须通过施肥来补充,但磷肥有它的怪脾气,只有顺着它的脾气施用才灵。 一、早施 农作物在苗期吸收磷最快,要占生长期吸收总磷的一半,若苗期缺磷,会影响后期生长,即使后期再补施,也很难挽回缺磷的损失,故苗期不能缺磷。 Phosphorus in the soil generally can not meet the needs of crops, must be supplemented by fertilization, but phosphate has its strange temper, only the temper applied along its talent. First, early application of crops in the seedling absorption of phosphorus fastest, accounting for half of the total growth of phosphorus absorption, if the lack of phosphorus seedlings, will affect the late growth, even if the late replenishment, it is difficult to restore the loss of phosphorus, it is therefore Seedling can not lack phosphorus.