Effects Of Different Green Manure Application On Physical And Chemical Properties Of Tobacco-Planting Soils And Yield And Quality Of Flue-cured Tobacco

In order to investigate the effect of green manure on the improvement of soil and increasing of soil fertility,3-year fix-point field experiment of green manures was conducted to study the effects of turnover green manure of Vicia villosa, Common vetch, Milk vetch and Ryegrass on physical and chemical properties, microbial biomass and enzyme activity of tobacco-planting soil and tobacco grow, economic character, chemical components and smoking quality of flur-cured tobacco. The results as follows:(1)The soil bulk density could be reduced during consecutive turnover green manure test; and the soil organic matter, total N, total P, total K, available N, available P, available K could be increased. Turnover green manure could increase soil microbial biomass and soil enzyme activity.(2) Turnover green manure could improve tobacco agronomic character. The yield and output could be increased during consecutive turnover green manure.(3) Turnover green manure mainly effect chemical component and smoking quality of upper tobacco leaves, appropriate turnover green manure amount could improve harmony of chemical component and smoking quality of upper tobacco leaves.(4) The green manures of Common vetch can popularize in Xiangxi tobacco-planting areas.