Abstract: To study the effects of different application methods of basic fertilizer on the yield and quality of flue-cured tobacco, four different basic fertilizer application methods, namely single furrow strip application, wide strip application, hole bottom ring application and “101” fertilizer application method, were adopted to carry out field randomized block experiment under the condition of equal amount of fertilizers . The labor cost of different fertilizer application methods for Yunyan87 varieties, field growth status of tobacco leaves, appearance quality of cured tobacco leaves, coordination of chemical components and economic characteristics were studied. The results show that broad band application of basic fertilizer is beneficial to the early growth and rapid development of tobacco plants, can improve the yield and quality of tobacco leaves, improve the coordination of chemical components of tobacco leaves and has low fertilization cost, so it is worthy of comprehensive promotion and application. Base fertilizer hole bottom ring application method and “101” fertilizer application method are beneficial to increase the average price of tobacco leaves, the proportion of superior tobacco leaves and improve the quality of tobacco leaves, but are not conducive to early growth and rapid development, low yield, high fertilizer application cost and difficult to popularize. The method of applying basic fertilizer in single furrow strip has high yield and output value and low fertilizer application cost, but the average price is low and it is not conducive to improving the quality of tobacco leaves and the coordination of chemical components is poor.

Key words: flue-cured tobacco, basic fertilizer, application methods, yield and quality