The released quantity of residual phosphate was opositively related to the content of clay and residual phosphate in soil, and the concentration of lignin in the extracting solution.
木质素用量越大，土壤粘粒越多，残余磷含量越高，木质素释放残余磷的数量越多。
The released quantity of residual phosphate was opositively related to the content of clay and residual phosphate in soil, and the concentration of lignin in the extracting solution.
木质素用量越大，土壤粘粒越多，残余磷含量越高，木质素释放残余磷的数量越多。
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