钾肥用量和追肥时期对抗黑胫病红花大金元烟叶化学成分及产量和质量的影响

夏玉兰, 王德勋, 赵园园, 范志勇, 李娟, 王阁, 赵志豪, 史宏志

Effects of Potassium Fertilizer Dosage and Topdressing Period on Chemical Composition, Yield and Quality of Leaves ofBlack Shank-Resistant Tobacco Honghuadajinyuan

Xia Yulan, Wang Dexun, Zhao Yuanyuan, Fan Zhiyong, Li Juan, Wang Ge, Zhao Zhihao, Shi Hongzhi

表4 不同钾肥用量和追肥时期对烤烟中部叶物理特性的影响

Table 4 Effects of different potassium fertilizer dosages and topdressing periods on the physical characteristics of middle leaves of flue-cured tobacco

处理 Treatment 叶长 Leaf length (cm) 叶宽 Leaf width (cm) 叶面积 Leaf area (cm2) 厚度 Thickness (mm) 单叶重 Single leaf weight (g) 叶质重 Leaf density (g/m2) 含梗率 Midrib ratio (%) A1B1 62.30bcd 25.00cd 988.23de 0.0980a 15.15a 87.52a 27.60b A1B2 65.60a 28.00a 1165.45a 0.0960a 13.24c 75.70d 25.39d A1B3 63.57abc 26.20b 1056.78bc 0.0897b 12.04e 73.00d 27.47bc A2B1 61.13d 24.00def 930.89f 0.0970a 15.09a 86.86a 27.59b A2B2 64.60ab 26.50b 1086.20b 0.0893b 14.31b 82.48b 26.44cd A2B3 62.27bcd 25.70bc 1015.42cd 0.0870b 12.61de 75.86cd 28.37b A3B1 60.83d 23.43f 904.32f 0.0957a 14.01b 85.47ab 30.14a A3B2 63.77abc 24.83cde 1004.67d 0.0893b 12.87cd 84.31ab 28.05b A3B3 62.00cd 23.93ef 941.38ef 0.0883b 11.37f 79.02c 28.09b F(A) 9.00** 99.84** 120.12** 35.80** 89.67** 34.00** 65.62** F(B) 34.53** 96.08** 174.43** 167.48** 426.68** 207.45** 59.86** F(A×B) 0.11 5.39** 5.08** 9.09** 6.34** 20.34** 13.89**