缓释钾肥钾素释放特征及其在烤烟上的应用  

Potassium nutrient release characteristics and the application of slow-release potassium fertilizer in flue-cured tobacco

作　　者：张雪芹[1,2] 彭克勤[1] 王少先[1,3] 

机构地区：[1]湖南农业大学湖南省植物激素与生长发育重点实验室,长沙芙蓉区410128 [2]福建省亚热带植物研究所,厦门361006 [3]湖南中烟工业公司技术中心,长沙410001

出　　处：《中国烟草学报》2009年第3期39-43,共5页Acta Tabacaria Sinica

摘　　要：以烤烟专用配方肥为对照,采用水溶出率法和土壤溶出率法对缓释钾肥钾素的释放及烤烟营养效应进行了研究。结果表明:钾素初期溶出率和微分溶出率分别为12.2%和1.12%。当土壤含水量为15%或pH为6.5时,钾素释放量最高。施用缓释钾肥可以提高烤烟总氮、烟碱和钾含量,降低还原糖和氯含量,使烟叶各化学成分含量较适宜,比例较协调,并提高产值。Potassium nutrient release of slow-release potassium fertilizer（SRPF） was studied by water dissolution rate method and soil dissolution rate method using tobacco specific formulated fertilizer（TSFF）. The application effects of SRPF in flue- cured tobacco were also investigated Results showed that preliminary solubility rate and differential solubility rate of SRPF were 12.2% and 1.12%, respectively. When soil water content was 15% and pH was 6.5, potassium nutrient releasing content reached its highest level. With the application of SRPF, content of total nitrogen, nicotine, and potassium increased while that of deoxidize sugar and chlorine decreased. The content and ratios of various chemical components in leaves were optimized, and the production value was improved.

关 键 词：烤烟 缓释钾肥 钾素 化学成分 

分 类 号：S572.062[农业科学—烟草工业]