论文部分内容阅读
Environmental issue has concerned the public with the build-up of soil phosphorus(P) following application of organic manure.This demands a fully understanding of the change of phosphorus during composting of fresh waste leaves of tobacco and finding out the status of P fertilizer in leaf-made manure.This study had shown that water-soluble and HCl-soluble phosphon were the dominant fractions of P in the compost of fresh waste leaves,in the ranges of 19%-41% and 17%-43%,respectively.However,the former declined progressively upon composting time,but the latter increased,indicating transformation of the more vulnerable water soluble P to the more recalcitrant HCl-extractable P.
Environmental issue has concerned the public with the build-up of soil phosphorus (P) following application of organic manure. This demands a fully understanding of the change of phosphorus during composting of fresh waste leaves of tobacco and finding out the status of P fertilizer in leaf-made manure. This study has shown that water-soluble and HCl-soluble phosphon were the dominant fractions of P in the compost of fresh waste leaves, in the ranges of 19% -41% and 17% -43%, respectively. However, the former declined progressively upon composting time, but the latter increased, indicating transformation of the more vulnerable water soluble P to the more recalcitrant HCl-extractable P.