不同生育期施用钾肥对烤烟生长·产量·质量的影响

目的]研究团棵期、现蕾期施用钾肥及叶面补施钾肥对烟草生育期、烟叶产质量的影响。方法]选择烤烟适宜的生育期施用钾肥,研究对烤烟植株生长和烟叶品质的影响。结果]结果表明,分别在团棵期和现蕾期各半追施钾肥较为适宜,再加施一定量的叶面肥(磷酸二氢钾)效果较为理想。结论]在烟草生育中、前期施入钾肥可以提高烟叶单产、品质和经济价值。

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

Objective] The aim of the research was to study the influences of potassium nutrition added in the rosette stage and budding stage on the flue-cured tobacco growth,increase yield and quality of leaf.Method] Suitable growth stages were chosen to applicate potassium fertilizer and study the effects on the flue-cured tobacco growth,yield and quality of leaf.Result] The results indicated that potassium fertilizer applicated separately in the rosette stage and budding stage was suitable.Spray quantitative leaf fertilizer KH2PO4 should be taken to attain the ideal results in the production.Conclusion] Potassium fertilizer applicated at the early middle stage could improve the yield,quality and value of tobacco.