稀土肥不同施用方式对烟草品质的影响

Effects of Different Application Modes of Rare Earth Fertilizer on Tobacco Quality

采用大田试验,设置了CK(常规施肥)、T1(常规施肥+稀土肥基施)、T2(常规施肥+稀土肥灌根)和T3(常规施肥+稀土肥叶面喷施)四个处理,研究了稀土肥不同施用方式对烤后烟叶化学成分的协调性、提高光合色素和香味物质的含量的影响。结果表明,叶面喷施稀土肥明显提高了烤后烟叶中蛋白质等含氮化合物和钾的含量,调节了糖碱比和钾氯比,协调化学成分;明显增加了烟叶中叶绿素和各类中性致香物质的含量。表明在常规施肥基础上,叶面喷施稀土肥能明显提高烟叶品质。

Different fertilization modes, including conventional fertilization(CK), conventional fertilization + rare-earth fertilizer as base fertilizer(T1), conventional fertilization + root irrigation with rare-earth fertilizer(T2) and conventional fertilization + foliar spraying with rare-earth fertilizer(T3), were set up in the field. We investigated the coordination of the chemical composition in the cured tobacco leaves and the contents of photosynthetic pigment and aroma substances after different application methods of rare earth fertilizer. The results showed that T3 treatment improved the contents of nitrogen containing compounds and potassium in the leaves of the flue cured tobacco,adjusted the ratio of sugar to alkali and ratio of potassium to chlorine, coordinated the chemical composition, and obviously increased the contents of chlorophyll and various neutral aroma substances in the tobacco leaves. On the basis of conventional fertilization, the foliar spraying of rare earth fertilizer significantly improved the quality of tobacco leaves.