烤烟“3414”肥料效应

Effects of “3414” Fertilizer on Flue-cured Tobacco

[目的]为不同烟区土壤测土配方施肥提供理论指导。[方法]采用"3414"完全试验方案设计,研究了不同肥料效应对烤烟生长发育以及产量、质量等方面的影响。[结果]不同处理烟株田间长势表现具有一定的差异性。烤后烟叶总氮、总植物碱和K2O含量与肥料效应关系密切。不同肥料效应对烟叶经济性状有较大的影响,不施肥处理烟叶产量最低,中上等烟比例较高。氮肥用量最多处理经济性状没有表现出最好的优势。[结论]建立肥料效应三元二次数学模拟方程:Y=138.36+23.18X1-0.83X12-4.32X2+0.34X22-4.40X3+0.09X32-1.02X1X2-0.35X1X3+0.64X2X3(式中,X1、X2,X3分别代表N、P2O5、K2O用量)。该研究可以预测最大施肥量和最佳施肥量,用于指导当地烟叶生产。

[ Objective ] The research aimed to provide the theoretical basis for soil testing and formula fertilization of different tobacco-growing areas. [ Method ] Based on ＂3414＂ fertilizer experiment design, the effects of different fertilizer on flue-cured tobacco growth, yield and quality were studied. [ Result ] The growth condition in field of different treatment tobacco plants had large difference. The content of total nitrogen,to- tal nicotine and K2 O in flue-cured tobacco had a closed relationship with different fertilizer effect. The different fertilizer effects had a large im- pact on economic characters of flue-cured tobacco. The flue-cured tobacco yield by the treatment of no fertilizer was lowest, and the ratio of mid-high grade leaves of flued-tobacco was higher. The economic characters of flue-cured tobacco by the treament of most N fertizer application rate didn＇t show the best manifestation. [ Conclusion] The simulated three-factor equation of fertilizer effect was eatablished： Y=138.36＋23.18X_1-0.83X_1^2-4.32X_2＋0.34X_2^2-4.40X3＋0.09X_3^2-1.02X_1X_2-0.35X_1X_3＋0.64X_2X_3 （X_1,X_2z, X_3 represent the level of N, P2 O2 and K20 fertilizer respectively）. The research could guide local tobaeeo production by forecasting maximum fertilization rates and optimum fer- tilization rates.