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Effects of different application measures of potassium fertilizer by topping on potassium contents in flue-cured tobacco plants in Yunnan Province
Author(s): 
Pages: 87-89
Year: Issue:  1
Journal: CHINESE JOURNAL OF ECO-AGRICULTURE

Keyword:  追施K肥烤烟含K量;
Abstract: 田间试验研究打顶时不同追K对云南烤烟含K量的影响结果表明,打顶时追施K肥可提高烤烟叶片含K量和烟株吸K量.烤烟田间土壤补施K肥(包括根部集中施用K2SO4、KNO3和缓效钾)处理其提高烟叶含K量效应明显优于叶面喷施K肥(包括叶面喷施KH2PO4、KNO3和K2SO4)处理,而3种土壤追施K肥处理以施K2SO4和KNO3效果最佳,烤烟生育后期追施K肥提高中、上部叶片含K量效果最佳,顶叶含K量由对照的2.6%增至3.2%.
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