Study on Efficiency of Fertilizer Application in Production of Flue-cured Tobacco through “3414”Test

The influences of different fertilizer formulas on the growth,development,yield and quality of flue-cured tobacco were studied through3414field test. The results indicated that: in the treatment N 3 P 2 K 2( applying the most nitrogen),the tobacco plants had the best growth vigor at late growth stage,the content of total sugar and reducing sugar in baked tobacco leaves was the lowest,and the content of total nitrogen was higher,but the economic characters of flue-cured tobacco leaves did not show the best advantage. Among 14 treatments,the treatment N 2 P 2 K 2( applying N 9. 00 kg/667 m2,P 2 O 5 9. 00 kg /667 m2,K 2 O 22. 50 kg / 667 m2) obtained the highest output value and the best economic benefit of flue-cured tobacco production.