磷肥可以根据其在不同溶剂诸如水、柠檬酸和无机酸中的溶解度来加以分类,表1中列出了几个磷肥品种及其主要组分和溶解度的鉴定方法。由于磷肥的溶解度通常随测定溶液的浓度增加而降低,故前已确认磷肥的溶解度和它的农艺学价值密切相关。本文研究了此种相关性是否存在以及相关性的大小,并探讨了土壤中磷的动态(即肥料磷转变成土壤磷和反应产物的溶解度)和新近的 Phosphate fertilizers can be classified according to their solubility in different solvents such as water, citric acid and inorganic acids. Table 1 shows the identification of several phosphate fertilizers and their major components and their solubility. Because the solubility of phosphate fertilizer usually decreases with increasing concentration of the test solution, it has been previously confirmed that the solubility of phosphate fertilizer is closely related to its agronomic value. This paper examines the existence and relevance of such correlations and explores the dynamics of P in soils (ie, the conversion of fertilizer P to soil P and the solubility of the reaction products) and the recent