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烟田施用牛粪、菜籽饼、花生饼后 ,土壤中细菌、放线菌、好气性纤维分解菌和亚硝化细菌数量明显增加 ;磷酸酶、蔗糖酶、脲酶活性显著增强 ;施用菜籽饼和花生饼明显提高土壤蛋白酶活性。有机氮施用比例占总施氮量的 2 5% ,可促进烟株对磷钾的吸收 ,提高中、上部叶的氮钾浓度 ,增加中、下部叶糖含量 ,经济效益显著
After applying cow dung, rapeseed cake and peanut cake in the tobacco field, the quantity of bacteria, actinomycetes, aerobic defibrillators and nitrosated bacteria in the soil increased obviously; the activities of phosphatase, sucrase and urease were significantly increased; And peanut cake significantly improve soil protease activity. The proportion of organic nitrogen application accounted for 25% of the total nitrogen application, which could promote the absorption of phosphorus and potassium by tobacco plants, increase the concentration of nitrogen and potassium in the middle and upper leaves, and increase the leaf sugar content in the middle and lower parts, with obvious economic benefits