钾肥不同施用时期对烤烟产质量的影响

目的]探讨钾肥不同施用时期对云南景东县烤烟品种K326产质量的影响。方法]以烤烟品种K326为材料,测定不同钾肥施用时期下烤烟的农艺性状和产质量。结果]移栽后35 d和移栽后50 d追施钾肥,在各方面表现最优,产量2 790.0 kg/hm~2、产值44 082.0元/hm~2均最高,中上等烟比例平均高出其他处理6.91%,且各部位的钾含量较高。同时,推迟钾肥的施用期,可使烟株的产量、产值、中上等烟比例有所提高,烟叶的含钾量也有所提高,内部主要化学成分的比例也更协调。结论]该研究可为云南景东烤烟种植中钾的施用提供参考。

Effects of Potassium Nutrition Application at Different Stages on the Yield and Quality of Flue-cured Tobacco

Objective] The effects of different potassium fertilizer application period on the yield and quality of K326 in Jingdong of Yunnan were studied.Method] Taking K326 as the material,the agronomic characters,yield and quality of flue-cured tobacco were compared among treatments of different potassium fertilizer application period.Result] Applying potassium after transplanting 35 d and 50 d had the best performance in all aspects,production 2 790.0 kg/hm2 and output value 44 082.0 yuan/hm2 were the highest,the proportion of superior tobacco increased by 6.91% than the average of other,and the potassium content in different parts was high.At the same time,delaying the application period of potassium fertilizer could increase the yield,output value and the proportion of middle and high grade tobacco,and increase the content of potassium in tobacco.The chemical constituents of tobacco was coordinated.Conclusion]The research could provide reference for the application of potassium fertilizer for planting flue-cured tobacco.