The difference of ammonia, amido, amino group and quaternary ammonium salt, some common wrong expressions on them, and the valence state of phosphorus in some of its oxyacid were pointed out.
The effects of interaction among nitrogen, phosphorus and potassium fertilizers on salt content and ion composition in greenhouse were studied through laboratory incubation experiment.
通过室内模拟培养实验，研究了氮、磷、钾肥交互作用对设施土壤盐分含量与离子组成变化的影响。
3
No genotypic difference was found for the effects of low phosphorus and salt stress interactions on soybean growth.