断根和叶面施钾对烟叶有机钾指数和中性致香物质含量的影响  

Effects of root cutting and leaf application of potassium on organic potassium index and content of neutral aromatic substances in tobacco leaves

作　　者：王政[1] 徐天养[2] 黄崇峻[1] 蒙刚[2] 郭智勇 王加春[2] 敖金成 WANG Zheng;XU Tian-yang;HUANG Chong-jun;MENG Gang;GUO Zhi-yong;WANG Jia-chun;AO Jin-cheng(China Tobacco Guangxi Industrial Co.,Ltd.,Nanning530001,China;Wenshan Tobacco Company of Yunnan Province,Wenshan663000,Yunnan,China;Yunnan Lvang Biotechnology Co.,Ltd.,Kunming650212,China)

机构地区：[1]广西中烟工业有限责任公司,南宁530001 [2]云南省烟草公司文山州公司,云南文山663000 [3]云南绿盎生物科技有限公司,昆明650212

出　　处：《湖北农业科学》2021年第14期71-75,共5页Hubei Agricultural Sciences

基　　金：广西中烟工业有限责任公司科技项目(GXZYCX2019B004)。

摘　　要：采用大田试验,共设置对照(CK)、断根(C)、叶面喷施钾肥(K)、断根并喷施钾肥(C+K)4个处理,研究了不同农艺措施对打顶后烟叶钾含量及有机钾指数动态变化及初烤烟叶中性致香物质含量的影响。结果表明,与对照(CK)相比,C、K、C+K处理均能减缓钾素流失和有机钾指数下降,其中C、C+K处理烟叶钾和有机钾指数呈先降后升的变化趋势;烟叶的中性致香物质含量分别提高29.2%、18.3%、4.5%,其中以C处理效果最佳,K处理次之。说明断根能有效减缓烟叶钾素的流失和促进后期钾素的积累,并提高烟叶中性致香物质含量,而基于省工降本要求,叶面喷施钾肥是一种可行的烟叶提钾增香技术。Field experiments were carried out to study the effects of different agronomic measures on the dynamic changes of potassium content and organic potassium index and the content of neutral aromatic substances in primary flue-cured tobacco leaves after topping treatment,setting blank control(CK),root cutting(C),spraying of potassium fertilizer(K),root cutting and spraying of potassium fertilizer(C+K).The results showed that,compared with the CK,C,K and C+K treatments slowed down the loss of potassium and the decrease of organic potassium index and the potassium and organic potassium index of C and C+K treatments decreased first and then increased.The content of neutral aromatic substances in tobacco leaves increased by 29.2%,18.3%and 4.5%,and C treatment had the best effect,followed by K treatment.The results showed that root cutting could effectively slow down the loss of potassium in tobacco leaves and promote the accumulation of potassium in the later stage,and increase the content of neutral aromatic substances in tobacco leaves.Based on the requirements of saving labor and reducing cost,leaf spraying of potassium fertilizer was a feasible technology for potassium extraction and aroma increase in tobacco leaves.

关 键 词：烤烟 中性致香物质 有机钾指数 农艺措施 

分 类 号：S572[农业科学—烟草工业]