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土壤中的磷,一般不能满足农作物生长发育的需要,必须通过施肥来补充。但是,施用磷肥必须讲方法。一、早施农作物的苗期吸收磷的速度最快,一般要占生育期总需磷量的一半。如果苗期缺磷,即使后期再补充,也很难挽回苗期缺磷所造成的损失。所以,农作物苗期必须保证不能缺磷。如果缺乏要及时弥补,错过时机则无法弥补。
Soil phosphorus, generally can not meet the needs of crop growth and development, must be supplemented by fertilization. However, the application of phosphate fertilizer must say something. First, as early as the seedlings of agricultural crops to absorb phosphorus the fastest, generally accounted for half of the total phosphorus growth period. If the seedling lack of phosphorus, even if the late replenishment, it is difficult to restore the phosphorus loss caused by seedling stage. Therefore, crop seedling must ensure that the lack of phosphorus. If the lack of timely make up, miss the opportunity can not make up.