花生饼肥施用量对烤烟生长及产质量的影响

以施100%无机肥为对照,进行花生饼肥不同施用量（分别占总施氮量的10%、20%、30%）对烤烟生长及产质量影响试验。结果表明：随着花生饼肥施用量的增加,烤烟上部最大叶叶长、叶宽、叶面积及株高、茎围、叶片数均呈增加趋势;当饼肥施用量达10%～20%时,黑茎病、赤星病发病率和病情指数均较对照有所降低,而当施用量达30%时,赤星病发病率及病情指数较对照明显升高;随着饼肥施用量增加,烟叶产量较对照明显增加,上等烟比例、均价、公顷产值均以20%的施用量最优;当饼肥施用量达10%～20%时,烟叶化学成分趋于协调,评吸质量提高,其中以20%的施用量评吸质量最优,而当施用量达30%时,烟叶化学成分不协调,中部叶评吸质量变化不大,上部叶评吸质量下降。

Effects of different application rates of peanut cake fertilizer on growth and quality of flue-cured tobacco

The purpose of this experiment was to study the effects of different application rates of peanut cake fertilizer（10,20 and 30%） on the growth and quality of flue-cured tobacco.The inorganic fertilizer（100%） was taken as control.The results showed that the length and width of largest upper leaf,leaf area,plant height,stem girth and leaf number of tobacco plants increased with increasing rate of peanut cake fertilizer.When the application rate of peanut cake fertilizer accounted for 10-20% of total nitrogen fertilizer,the incidence of black stem and brown spot diseases reduced compared with the control,whereas the incidence of brown spot and its disease index increased when treated with 30% peanut cake fertilizer.Compared with the control,the yield of flue-cured tobacco leaf significantly increased with increasing application rate of peanut cake fertilizer.The rate of super tobacco,average price and output values were all optimized when the ap plication rate of peanut cake fertilizer was 20%.When peanut cake fertilizer accounted for 10-20%,the chemical composition of flue-cured tobacco leaf tended to be coordinated with increasing smoking quality.The smoking quality reached the best when peanut cake fertilizer accounted for 20%.While the application rate of peanut cake fertilizer reached 30%,the chemical composition of flue-cured tobacco leaf was disproportioned and smoking quality of middle leaf changed little with decreasing smoking quality of upper leaf.