[本文曾于1974年在南菲德班(D-urban)举行的第十五届国际甘蔗糖业技术会议上介绍,并编入论文集中]前言土壤中的磷是以多种形式和化合物的状态存在的,其全磷含量固然不同,而有效磷含量变异更大,因此,不同种类磷肥的效果是要考虑到(要联想到)所施下的土壤的化学性质的。施用磷肥无效往往是与土壤固定磷的能力 [This article was introduced at the 15th International Cane Sugar Technical Conference held in D-urban in 1974 and incorporated into the paper.] INTRODUCTION Phosphorus in soils is available in various forms and compounds The state of existence, the total phosphorus content is different, but the effective phosphorus content greater variation, therefore, the effect of different types of phosphate fertilizer is to take into account (to think of) the chemical properties of the soil under the applied. The ineffectiveness of applying phosphate fertilizer is often the ability to fix the phosphorus with the soil