【摘要】 磷是动植物生长所必需的元素,特别是植物.本文阐述了磷素在土壤中的形态及分类,重点分析了磷素的植物营养学原理、对植物的有效性及其影响因素,进而分析磷在全球尺度和土壤—植物系统中的循环机制;对于磷素的分级方法进行了总结,最后对磷素的研究进展及发展趋势提出了自己的观点.更多还原

【Abstract】 Phosphorus is the essential element for the plants and animals, especially for plants. This article mainly tells the forms of phosphorus and the classification of phosphorus in soil, then lay emphasis on the efficitiveness of phosphorus for plants and its influential factors. In gloabal scale, explains how phosphorus circles and changes; the make a summary of the classificating method of phosphorus.Finally, raise some opinions of author’s own to the development of the study on phosphorus.更多还原