• For soil trace element, the ageing humus had fixed effect. The nascent active humus had effect to promote the activity.

    土壤微量元素老化腐殖质固定作用新生活性腐殖质有促进活性作用。

    youdao

  • For soil trace element, the ageing humus had fixed effect. The nascent active humus had effect to promote the activity.

    土壤微量元素老化腐殖质固定作用新生活性腐殖质有促进活性作用。

    youdao

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