灰色胡敏酸影响最为微弱。
钙镁磷肥、胡敏酸互作可增加土壤残渣态铅的含量。
Mutual effects of calcium magnesium phosphate and humic acid enhance residual lead contents in soil.
胡敏酸甲氧基功能团的含量多寡是衡量土壤腐殖质化的重要指标。
The content of methyl functional group of humus is an important index to evaluate the humification of soil.
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