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本文通过田间与盆栽模拟试验研究了有机肥对苏打盐碱土的改良效果。结果表明:苏打盐碱土施有机肥后,土壤pH值显著下降;土壤盐基离子组分发生显著变化,如Na+含量下降,Na+占阳离子比例由77.91%降至68.56%,而Ca2+、Mg2+含量变化与之相反;同时,施用有机肥使土壤有机质、全氮、全磷、全钾含量显著增加;此外,玉米单产随有机肥用量的增加而呈增加趋势。结果表明:施用有机肥是一种改善盐碱土理化性质、增加玉米单产的重要措施。
In this paper, field and pot experiment were conducted to study the effect of organic fertilizer on soda saline-alkali soil. The results showed that the pH value of soil decreased significantly after applying organic manure in soda saline-alkali soil. The content of soil salt-base ions changed significantly. For example, the content of Na + decreased, the proportion of Na + to cation decreased from 77.91% to 68.56%, while Ca2 +, Mg2 + In the meantime, the application of organic manure significantly increased soil organic matter, total nitrogen, total phosphorus and total potassium. In addition, the yield of maize increased with the increase of organic manure. The results showed that applying organic manure was an important measure to improve the physical and chemical properties of saline-alkali soil and increase the yield of corn.