中国烟草科学Issue(3)：17-22,6.DOI:10.13496/j.issn.1007-5119.2014.03.004
几种缓释钾肥对烤烟钾含量及产量产值的影响
Effect of Slowly-released Potassium Fertilizers on Potassium Content and Yield of Flue-cured Tobacco
摘要
Abstract
Agronomic measures can be adapted to increase plant K content, which is one of important strategies to improve the quality and output value of flue-cured tobacco. Experiments on K release and field crop response of slowly-released K fertilizers, i.e., PV Coated potassium nitrate, Humic matter coated potassium chloride, and PV and humic coated potassium chloride, were conducted to investigate the K release characteristics and their effects on yield and output value of tobacco. The results showed that the accumulative solubility rates of K of three slowly-released K fertilizers in 28 days under standard conditions were 67.2%, 100%and 87.5%, respectively, of which the performance of PV coated potassium nitrate was the best. The content of soil available K increased at late growth stage of plant treated with the slowly released fertilizers. Compared with the control (common K fertilizer), application of slowly-released potassium increased leaf K content by 13%-39%, yield by 7%-32%, and production value by 7%-32%. In conclusion, the slowly-released potassium fertilizers tested have positive effects on increasing K content and output value of tobacco, and has high potential in tobacco production.关键词
缓释钾肥/释放特征/烤烟/钾含量/产值Key words
slowly released potassium fertilizer/nutrient release/flue-cured tobacco/potassium content/output value分类
农业科技引用本文复制引用
刘金,李进平,涂书新,陈振国,彭孟祥,魏文娟..几种缓释钾肥对烤烟钾含量及产量产值的影响[J].中国烟草科学,2014,(3):17-22,6.基金项目
湖北省烟草公司重大专项（027Y2011-055）；公益性行业（农业）科研专项 （）
