有机肥与硫肥平衡配施对烤烟品质的影响

为探讨有机肥与硫肥配施对烤烟品质的最佳效果，采用正交旋转回归方法，以氮碱比、糖碱比两个主要品质指标为依据，在此基础上建立烟叶质量与有机肥（菜籽饼）、硫肥（硫酸钾）用量之间显著相关的数学模型并进行方差分析。通过模拟寻优，得出优化平衡配施最佳方案为，有机肥中低水平300～375 kg/hm²，硫肥中水平56.25 kg/hm²。可见，硫肥不宜施用过多，生产上不宜提倡另外追施硫肥；影响烟叶品质的主要因子是有机肥（菜籽饼）。

Effects of Balanced Application of Organic and Sulfur Fertilizers on Flue-cured Tobacco Quality

The effects of organic fertilizer(cake fertilizer) and sulfer fertilizer(K2SO4) applications on flue-cured tobacco quality were studied by using the orthogonal-gyrating regression. Basing on two quality indices (the ratio of nitrogen to nicotine, the ratio of reducing sugar to nicotine), a mathematical model was established of the significant relationship between leaf quality and the fertilization rate of organic fertilizer (rapeseed cake) and sulfer fertilizer (K2SO4). Through variance analysis and optimizing simulation, the optimum rates for balanced application were organic fertilizer at medium to low level of 300-375 kg/ha and sulfer fertilizer at medium level of 56.25 kg/ha. In conclusion, it is not appropriate to apply excess sulfer, and the main effecting factor of flue-curd tobacco quality is organic fertilizer ( rapeseed cake).