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利用田间小区方法连续3年在邯郸地区褐土研究玉米秸秆粉碎后直接还田对土壤基本理化性质的影响。结果表明,施用有机物料能够改善土壤的理化性质、培肥地力。与单施无机肥相比,无机肥配施有机物料能够增加土壤有机质含量,降低土壤容重,提高土壤孔隙度,同时改善土壤的氮、磷、钾养分状况。在等碳量的条件下,玉米秸秆对保持和提高土壤有机质含量的效果好于牛粪肥。
Using field plot method to study the effect of direct returning to field on basic physical and chemical properties of soil after crushing corn stalk in the cinnamon soil of Handan area for three consecutive years. The results showed that the application of organic materials can improve soil physical and chemical properties, fertility and fertility. Compared with the single application of inorganic fertilizers, inorganic fertilizers combined with organic materials can increase soil organic matter content, reduce soil bulk density, increase soil porosity, and improve soil nitrogen, phosphorus and potassium nutrients. Under the condition of equal carbon content, the effect of corn stalks on maintaining and increasing soil organic matter content is better than that of cow manure.