氮素在土壤中的转化及其对烤烟上部叶烟碱含量的影响  

Nitrogen Transformation in Soil and its Effects on Nicotine Content of Upper Flue-cured Tobacco Leaves

作　　者：刘卫群[1] 郭群召[1] 张福锁[2] 晁逢春[2] 

机构地区：[1]河南农业大学农学院,郑州市文化路95号450002 [2]中国农业大学植物营养系

出　　处：《烟草科技》2004年第5期36-39,共4页Tobacco Science & Technology

基　　金：国家烟草专卖局"平衡施肥技术试验与推广"项目(110200001011A)的一部分。

摘　　要：研究了烤烟生育期内植烟土壤中的氮素转化、供氮状况以及氮素对烤烟上部叶烟碱含量的影响。结果表明:施用无机氮肥可大幅度提高0～20cm深的土壤中的无机氮浓度,但维持时间较短;20～40cm深的土壤中无机氮的浓度受氮肥的影响较小;后期土壤供氮较多时易导致烤烟上部叶的烟碱含量过高。The transformation and supply levels of nitrogen in tobacco-growing soil at different growth and development stage of flue-cured tobacco and its effects on the nicotine contents of upper leaves were studied. The results showed that the inorganic nitrogen content in soil layer depth of 0-20cm raised sharply but only for a short time by inorganic nitrogen fertilizer application; the inorganic nitrogen content in the layer depth of 20-40cm was affected slightly by nitrogen application; oversupply of nitrogen at latter growing stage led to excessive nicotine content in (upper) leaves.

关 键 词：植烟土壤 氮素 烟碱含量 烤烟上部叶 烟叶 

分 类 号：S572[农业科学—烟草工业]