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当前位置: 首页 > 文章 > 河南烟区烤烟叶片含钾量低的原因初探 中国烟草学报 1996,3 (1)
Position: Home > Articles > Primary Study about the Mechanism of Low K Content in Flue-Cured Tobacco Leaf of Henan Province Acta Tabacaria Sinica 1996,3 (1)

河南烟区烤烟叶片含钾量低的原因初探

作  者：
胡国松;张国显;曹志宏;袁志永;张新;赵无宽;赵兴;王恩沛
单  位：
中国烟叶生产购销公司;中国科学院南京土壤研究所;河南省烟草公司烟叶处
关键词：
烤烟;土壤;钾;吸收;临界值
摘  要：
温室盆栽和大田试验结果揭示．烟叶评吸质量与烟叶含钾量呈正相关。尽管河南植烟土壤含钾量高于南方红壤，但其所产烟叶含钾量却远低于红壤。造成这种现象的主要原因包括土壤水分不足钾素迁移速度低，补充速度赶不上吸收速度的需要；土壤固相对钾的固定，河南烟区上镶中过量的钙对钾吸收的拮抗等。盆栽试验表明烤烟缺钾临界值为烤烟收获后土壤速效钾含量小于150mg／kg。通过调节土壤水分状况，选用吸钾能力高的烤烟品种和调节烤烟的生理活性可以有效地提高烟叶含钾量。
译  名：
Primary Study about the Mechanism of Low K Content in Flue-Cured Tobacco Leaf of Henan Province
作  者：
Hu Guosong; Zhang Guoxian; Cao Zhihong; Yuan Zhiyong;Zhang Xin; Zhao Yuankuan; Zhao Xing; Wang Enpei(Institute of Soil Science,Academia Sinica,Nanjing 210008)(Tobacco Corporation of Henan Province)(Tobacco Production and Trade Corporation of China)
关键词：
Critical value Flue-cured tobacco Potassium Soil uptake
摘  要：
Greenhorse and field plot experiments showed that there was a very significant positive correlation between K content of flue-cured tobacco leaf and its smoking quality.Although the soil K contents of Henan Province is higher than those of South China,K content of flue-cured tobacco leaf produced in Henan province is lower than those in South China. The reason for this phenomenon include that the speed of K replenishment form bulk soil to rhizosphere soil is lower than that of taobacco plant uptakd because of the low mobility of K in Henan soils caused by the poorer water condition,fertilizer K is fixed by 2: 1 clay mineral in Henan soils,K uptake is inhibited by the great amount of Ca in Henan calcareous soils planting tobacco. Greenhouse experiment indicated that the critical value of soil K deficiency is 150 mgK2O/kg after harvesting tobacco leaf. The K content in flue-cured tobacco leaf can be increased by improving irrigation condition,selecting tobacco varieties with higher K affinity and regulating the physiolOgical activity.

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