南平烟区烤烟氯化钾适宜用量的研究

Effect of Potassium Chloride Application Rates on Yield and Quality of Flue-cured Tobacco in Nanping Area

为了确定南平烟区适宜的氯化钾用量,在南平烟科所试验基地和光泽县进行了不同氯化钾用量的大田试验。结果表明,不同氯化钾用量对烟叶各生育期几乎没有影响;各农艺性状、经济性状和感官质量随氯化钾用量均呈"抛物线"变化,感官质量主要表现在香气量上的变化,烟叶中氯离子含量随土壤水溶性氯含量和氯化钾用量的增加而增加,烟叶中的钾氯比主要受氯离子含量影响,土壤水溶性氯含量和施氯量对烟叶氯含量的影响和互作效应均达到极显著,施用氯化钾可以降低生产和生态成本,生产上建议南平烟区采用45kg/hm2氯化钾用量较为适宜。

In order to determine suitable amounts of potassium chloride for flue-cured tobacco in Nanping area, the field experiments on application of potassium chloride were arranged in farm of Nanping institute of tobacco agricultural sciences and county of Guangze. The results showed that different growth periods were not changed in different treatments. With the increase of amounts of potassium chloride, agronomical character, economy character and smoking quality were changed in ＂parabola＂ path, and the last factor was mainly contributed by the contents of aroma. The contents of Chlorine in raw tobacco were positive correlation with those in soil and fertilizers, and the ratio of potassium to chloride was mainly influenced by the latter. The influence and interactional effect of both on the contents of chlorine in raw tobacco were significant. Use of potassium chloride may reduce the cost of economy and ecology. Therefore, the treatment of potassium chloride in 45kg per hectare was appropriate for flue-cured tobacco in Nanping area.