欢迎访问《中国农学通报》,

中国农学通报 ›› 2005, Vol. 21 ›› Issue (10): 212-212.

所属专题: 烟草种植与生产

• 目次 • 上一篇    下一篇

中国烟草钾营养研究现状分析Ⅰ. 烟草钾营养的各学科研究进展

介晓磊,,化党领,谭金芳,刘世亮   

  • 出版日期:2005-10-05 发布日期:2005-10-05

The Review of Potassium Nutrition in Tobacco in China

Jie Xiaolei,, Hua Dangling, Tan Jinfang, Liu Shiliang   

  • Online:2005-10-05 Published:2005-10-05

摘要: 综述了烟草钾营养的土壤、施肥、生理、遗传、栽培、生态等方面的研究进展。烟叶含钾量受烟株对钾的吸收运输积累能力的影响,而并不完全取决于土壤供钾水平的高低;增加钾肥用量和改变施钾方法可适当提高烟叶的钾素含量,但增加幅度有限,提高钾肥用量来增加烟叶含钾量的做法是不可取的;吸钾能力和烟叶含钾量在烟草基因型间存在明显差异。但烟草基因型目前并不是烟叶钾偏低的主要限制因素;钾素自身的吸收、运输、积累和分配的途径和生理机制、钾与其它营养元素如氮-钾、钙-镁-钾之间的互作机制,激素等生长调节物质与钾营养的关系、叶片成熟衰老过程中钾的外撤等还远没有研究清楚;改进烤烟栽培方式,平栽后培土起垄较传统的平栽、畦栽、垄栽等方式可提高烟叶含钾量;生态条件是影响烟草生长发育和产量、品质的重要因素。钾含量与生态环境关系研究有待深入。

Abstract: This article summarized the progress of study on pedology, fertilization technology, physiology, heredity, culture and ecology about potassium nutrition of tobacco in china. The potassium in leaf is affected not only by soil available potassium, but also by the capability of uptake, transport and accumulation of potassium in tobacco. Increasing rate of potassium application can rise the content of tobacco potassium at a certain extent. There are differences between different tobacco genotypes, but the gene are not the main cause resulting in lower content of potassium. Different model of cultivation also have effect on tobacco potassium. The mechanism of potassium uptake and redistribution, the interreaction of different chemical elements in soil and plant ,the interrelation of tobacco potassium and ecological cases are all needed to investigate.