热带地区微量元素的研究,至今尚缺乏系统的工作.研究微量元素对热带经济林的影响正日益受到生产部门的重视,这主要是和热带地区表生地球化学作用层中的矿物营养元素常常遭到淋失有关.由于热带土壤常缺乏多种常量和微量营养元素,因此也严重地限制了N、P、K的肥效发挥.一般地讲,虽然热带红壤砖红壤相对富含锰元素,但1952年Compagnom对橡胶树直接注射Cu、Mn、B、Fe、Zn等各种微 The study of trace elements in the tropics is still lack of systematic work to study the impact of trace elements on tropical economic forest is increasingly valued by the production sector, mainly in tropical and epigenetic geochemical layer of mineral nutrients are often encountered Due to the lack of a variety of macronutrients and micronutrients, tropical soils also severely limit the efficiency of N, P and K. In general, although red soil in tropical red soils is relatively rich in manganese, 1952 Compagnom rubber tree direct injection of Cu, Mn, B, Fe, Zn and other micro-micro