烟草科技Issue(1)：81-84,4.
昆明市植烟土壤交换性钙镁特征分析
Characteristics of Exchangeable Calcium and Magnesium in Tobacco Growing Soils in Kunming
摘要
Abstract
In order to investigate the characteristics of exchangeable calcium, exchangeable magnesium and Ca/ Mg ratio in flue-cured tobacco growing soils in Kunming, 1000 representative samples were collected with GPS positioning and analyzed. The results showed that: 1) The contents of exchangeable calcium and magnesium were rich in the soil samples with the average value of 2728.36 and 294.71 mg/kg, respectively; and the samples with the Ca/Mg ratio higher than 10, which induced potential magnesium deficiency accounted for 37.50% of the total samples. 2) The soil exchangeable calcium, exchangeable magnesium and Ca/Mg ratio were lower at the higher altitude areas than those at the lower altitude areas. 3) Soil textures slightly affected the contents of exchangeable calcium and magnesium, however Ca/Mg ratio was relatively higher in soil with heavy texture in general. 4) There was positive correlation between soil pH and the contents of exchangeable calcium and magnesium.关键词
昆明/植烟土壤/交换性钙镁/钙镁比Key words
Kunming/ Tobacco growing soil/ Exchangeable calcium/ Exchangeable magnesium/ Ca/Mg ratio分类
农业科技引用本文复制引用
邱学礼,高福宏,李忠环,彭云,詹莜国,陈军,付斌..昆明市植烟土壤交换性钙镁特征分析[J].烟草科技,2013,(1):81-84,4.基金项目
中国烟草总公司云南省烟草公司科技计划项目"昆明市寻甸科技试验基地土壤改良技术研究"(2010YN44). （2010YN44）
