The results of grey relational analysis revealed that the content of soil nutrients, in particular C and N, had a major effect on avail-P.

灰色分析的结果表明，土壤速效磷的形成主要受到土壤养分，尤其是碳、氮养分的影响。

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P-fertilizer and K-fertilizer are avail to promoting fibre content, but only using N-fertilizerwill reduce fibre content. 7.

磷肥、钾肥有利于纤维含量的提高，而单独施用氮肥则降低了纤维含量。

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P-fertilizer and K-fertilizer are avail to promoting fibre content, but only using N-fertilizerwill reduce fibre content. 7.

磷肥、钾肥有利于纤维含量的提高，而单独施用氮肥则降低了纤维含量。

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