论文部分内容阅读
通过水培、土培试验研究了不同阳离子的存在与土壤、矿物固定态铵释放及水稻苗期氮、钾吸收之间的关系，以及不同ＮＨ_４~＋、Ｋ~＋浓度组合对水稻苗期氮、钾营养关系的影响。结果表明：Ｋ~＋的存在并不直接影响作物对ＮＨ_４~＋的吸收，但明显抑制土壤、矿物固定态铵的释放，从而导致作物吸氮少。有土栽培条件下，养分元素间表现出来的相互作用与无土栽培时的结论并不完全一致。
Through hydroponics and soil culture experiments, the relationship between the existence of different cations and the release of fixed ammonium in soil and mineral and the absorption of nitrogen and potassium in rice seedling stage was studied, and the effect of different combinations of NH 4 + and K + , The relationship between potassium nutrition. The results showed that the presence of K ~ + did not directly affect the uptake of NH_4 ~ + by crops, but significantly inhibited the release of fixed ammonium in soils and minerals, resulting in fewer nitrogen uptake by crops. With soil cultivation, the interaction between nutrient elements is not exactly the same as that of soilless cultivation.