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磷是构成作物体中核蛋白、核酸和磷脂不可缺少的元素。但以往在张家口地区生产中应用的结果,磷肥肥效都不显着。为了澄清我区磷肥肥效及其经济效益,从1962年起结合全国肥料试验,在不同土壤和不同作物上进行了磷肥肥效试验。试验结果表明,磷肥肥效和经济效益随土壤肥力、作物种类、施用方法不同,差别很大。现根据几年来的试验资料,就磷肥有效条件、施用方法、豆科施磷在当地生产上的现实意义作一初步总
Phosphorus is an indispensable element in nuclear proteins, nucleic acids and phospholipids that make up the body of an animal. However, the results of the application in the past production in Zhangjiakou, phosphate fertilizer efficiency are not significant. In order to clarify the fertilizer efficiency and economic benefits of phosphate fertilizer in our district, combined with the national fertilizer experiment since 1962, fertilizer efficiency experiments were conducted on different soils and crops. The test results show that fertilizer efficiency and economic benefits vary greatly with soil fertility, crop type and application method. Now based on experimental data over the past few years, on the effective conditions of phosphate fertilizer, application methods, the actual production of leguminous phosphorus in the local production of a preliminary total