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 fixation and adsorption of ammonium are important parts of nitrogen recycle in soils.
铵的矿物固定和吸附是土壤氮素循环中的重要环节。
The quaternary ammonium salt polymer PDA was applied on dye fixation process for pigskin suede leather on the basis of dye fixation principle of quaternary ammonium salts.
利用季铵盐的固色原理，将二甲基二烯丙基氯化铵与丙烯酰胺的聚合物pda应用于绒面革固色。
The pot experiment indicated that different strains symbiotic nitrogen fixation efficiency and the ammonium molybdate concentration were related.
盆栽试验表明，不同菌株共生固氮的有效性与钼酸铵浓度相关。
The pot experiment indicated that different strains symbiotic nitrogen fixation efficiency and the ammonium molybdate concentration were related.
盆栽试验表明，不同菌株共生固氮的有效性与钼酸铵浓度相关。
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