摘要
采用野外调查与室内分析相结合的方法,分析了湖南烟区烤烟烟叶中镁与土壤交换性镁含量的现状及相互关系。结果表明,湖南烤烟烟叶中镁平均含量为0.378%,有66.3%的烟叶缺镁,且呈现由北往南逐渐降低趋势;土壤交换性镁平均含量为1.317cmol/kg,约40%土壤交换性镁偏低;烟稻复种连作方式在土壤和烟叶上的缺镁程度均高于连续旱作方式;烤烟烟叶中镁与土壤交换性镁含量呈极显著正相关,且烟叶的缺镁程度及比重明显高于土壤。
Characteristic and relationship of Mg content in flue-cured tobacco leaves and exchangeable Mg content in soils in Hunan tobacco-growing areas were studied by field and laboratory experiments. Results indicated that： The average Mg content in flue-cured tobacco leaves in Hunan was 0.378%, Mg deficiency in tobacco leaves was reached to 66.3% , and the Mg content decreased from north to south in Hunan; The average exchangeable Mg content in soils was 1.317cmoi/kg, and 40% of the total area had low Mg content; The deficiency in soils and flue-cured tobacco leaves in tobacco-rice cropping system was severer than in single cropping system in dry land; The high significant positive correlation between Mg content in tobacco leaves and exchangeable Mg content in soils was observed. Severity and proportion of Mg deficiency in tobacco leaves was higher than those in soils.
出处
《中国烟草科学》
CSCD
北大核心
2009年第4期52-55,共4页
Chinese Tobacco Science
基金
湖南省烟草专卖局(公司)项目"湖南基本烟田适宜性评价项目"(061011-02)
关键词
湖南
烤烟
镁素
Hunan
flue-cured tobacco
magnesium
