海南橡胶生态系统养份的生物地球化学特点

The Biogeochemical Characteristics of some Elements in the Rubber Ecosystem of Hainan Island

胶园土中有机质和N、P、K、Ca、Mg以及Cu、Zn、Mo、Cr等元素的丰度值比自然土低。由于橡胶生态系统结构单一,不断地收刈胶乳和清走残落物,使土壤养分收支不平衡,需施肥加以补充。

The abundance values of organic matter and N,P,K,Ca,Mg as well as Cu, Zn, Mo,Cr in the soil of rubber plantations are lower than those in natural soil. The unitary structure of the rubber ecosystem, continuous rubber tapping and constant clearing away dead litter result in inequilibrium of nutrients in the soil, and lead to a need of adding artificial fertilizer to the soil.