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为了筛选腐植酸烟草专用肥氮磷钾适宜配比,研究了不同氮磷钾配比的腐植酸肥料对烟草生长、品质和产量的影响。试验结果表明:施用腐植酸肥料能降低烟草株高,增加烟草单叶重、基茎粗和茎重、根重和根长,有利于增强烟草抗倒伏能力;施用腐植酸肥料能增加烟叶干重产量,以处理3烟叶干重产量最高,为350.1 g,比对照增产93.64%;施用腐植酸肥料能提高烟草叶片质量,叶片颜色、光泽、油分与弹性均优于对照,以处理2烟叶质量最好。腐植酸烟草专用肥氮磷钾适宜配比为N∶P2O5∶K2O=1∶(0.83~1.2)∶(1.2~1.33)。
In order to screen the suitable ratio of NPK for humic acid tobacco, the effects of different NPK fertilizers on the growth, quality and yield of tobacco were studied. The results showed that the application of humic acid fertilizer can reduce tobacco plant height, increase single leaf weight of tobacco, base stem diameter and stem weight, root weight and root length, which can enhance the lodging resistance of tobacco. Applying humic acid fertilizer can increase the dry weight of tobacco leaves Yield, to deal with the highest dry weight of tobacco leaves, 350.1 g, 93.64% higher than the control; application of humic acid fertilizer can improve the quality of tobacco leaves, leaf color, gloss, oil and elasticity were better than the control, it is good. Nitrogen, phosphorus and potassium for humic acid tobacco fertilizer suitable ratio of N: P2O5:K2O = 1: (0.83 ~ 1.2): (1.2 ~ 1.33).