深施磷易被土壤中的钙、镁、铁、铝等固定,而且移动性小,因此应把磷肥深施在作物根系附近,可以增加磷肥与根系的接触机会,既有利于作物吸收又减少杂草消耗,可提高利用率。采取拌种、条施、穴施等,效果很好。早施。磷肥做基肥要早施,因作物需磷的关键时间是苗期。苗期不缺磷,作物生长后期很少出现缺磷症状,故磷肥做基肥作用好。 Deep application of phosphorus is easily fixed by calcium, magnesium, iron and aluminum in the soil, and its mobility is small. Therefore, the application of phosphate fertilizer deep in the vicinity of the crop roots can increase the chances of contact with phosphate fertilizer and roots, which is not only beneficial to crop absorption but also reduced Weed consumption, can improve utilization. Take the seed dressing, Article facilities, points and other facilities, the effect is very good. Early application. Phosphate fertilizer to be applied as early as Shi, crop critical phosphorus is the seedling stage. Seedling does not lack phosphorus, late crop rarely appear phosphorus deficiency symptoms, so the role of phosphate fertilizer to do good.