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磷肥既可被作物根部吸收,也可喷施于叶面吸收。磷在作物体内有再利用的特点,作物生长前期对磷的吸收较多,占全部吸收量的60—70%,后期主要靠磷的转运再利用。磷在作物体内的转运率比氮的还高,而磷肥施用过晚对各种代谢过程如蛋白质、脂类、糖类的积累都极为不利,并伴有生长缓慢、延迟成熟等特点。因此,磷肥的施用要注意以下几个方面: 一、根据当地的土壤状况合理施用土壤条件是施用磷肥的基础,
Phosphate fertilizer can be absorbed by crop roots, but also sprayed on the foliar absorption. Phosphorus in the crop has the characteristics of reuse, early crop phosphorus uptake, accounting for 60-70% of the total absorption, the latter mainly rely on phosphorus transport and reuse. Phosphorus in the body of the transport rate than nitrogen is also high, and phosphorus late application of a variety of metabolic processes such as protein, lipid, carbohydrate accumulation are extremely unfavorable, accompanied by slow growth, delayed maturity and so on. Therefore, the application of phosphate fertilizer should pay attention to the following aspects: First, according to the local soil conditions Rational application of soil conditions is the basis for the application of phosphate fertilizer,