content of fixed ammonium 固定态铵含量
The clay content and clay composition of the tested soils are the two important factors influencing their fixed ammonium content and maximum capacity of ammonium fixation.
土壤粘粒含量和粘土矿物组成是决定土壤固定态铵含量及最大固铵容量的两个主要因素。
The content of mineral-fixed ammonium in soil was related not only to soil clay minerals but also to fertilization.
固定态铵的含量不仅与土壤中的粘土矿物有关，施肥对其也有影响。
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