Abstract: In order to improve the quality of soil and tobacco,effects of precision fertilization of flue-cured tobacco on soil structure and quality and benefit of tobacco leaves were studied by way of field demonstration and plot experiment. The results demonstrated that the B2F total and reducing sugar were increased significantly by precision fertilization,while the B2F total vegetable alkali content decreased,the sugar alkali of flue-cured tobacco were adjusted,total soil porosity and the organic matter content and the capillary water holding capacity in the early and middle stage were improved,and smoking quality of B2F tobacco leaves were improved,such as strength,concentration,aroma quantity,aroma,aftertaste,and quality of B2F tobacco leaf was improved significantly,ratio of potassium to chlorine of C3F tobacco leaf was decreased. Along with the depth increase and reduction of fertilizer,precision fertilization was efficient between significantly positive correlation changed with the smoking quality of B2F tobacco leaf,precision fertilization 7cm+90% fertilizer could increased content of organic matter of soil,could significantly improved ratio of potassium to chlorine of B2F tobacco leaf,precision fertilization 12 cm deep fertilization could significantly increased ratio of potassium to chlorine of B2F tobacco leaf,significantly improved the quality of B2F tobacco leaves.Precision fertilization 7cm could improve the content of reducing sugar and total sugar of C3F tobacco leaf,and decreased the content of total vegetable alkali,could improved the smoking quality of tobacco leaves,such as strength,concentration,aroma quantity,aroma,aftertaste.

Key words: Flue-cured tobacco, Fertilization, Soil properties, Quality of flue-cured tobacco

CLC Number: 

• S143