江西农业学报Issue(4)：37-40,4.
贵阳市开阳县植烟土壤有效中量元素调查与分析
Investigation an d Analysis of Available Seco ndary Elements in Tobacco-planting Soil in Kaiyang Countyo f Guiyang Cti y
摘要
Abstract
In order to make clear the status of secondary elements in tobacco-planting soil in Kaiyang county of Guiyang city , and provide basis for the scientific supplement of secondary elements in tobacco field , we determined the contents of exchangeable calcium, exchangeable magnesium , and available sulphur in 79 tobacco-planting soil samples collected from Kaiyang county , and analyzed their distribution status .The results indicated that the exchangeable calcium content in tobacco -planting soil varied from 1. 14 cmol/kg to 30.41 cmolk/g , with an average of 9.51 cmol/kg;34.18%of soil samples were relatively deficient in calcium;the to-bacco-planting soil samples from Zhaiji contained the most exchangeable calcium , while those from Fengsan contained the least ex-changeable calcium .The average content of exchangeable magnesium in the soil was 2.36 cmol/kg, and 12.66%of soil samples was short of magnesium.The ratio of exchangeable calcium content to exchangeable magnesium content (Ca-Mg ratio) in the soil ranged from 0.67 to 16.91, with an average of 4.49;the physiological calcium lack risk existed in 67.09%of soil samples .There was a sig-nificantly negative correlation between soil exchangeable magnesium content and Ca -Mg ratio, and the correlation coefficient was 0. 255. Along with the increase in soil pH-value, the soil exchangeable magnesium content increased gradually , and the soil exchange-able calcium content increased significantly .The available sulphur content in the soil was relatively high , with the mean of 30.88 mg/kg.Among the soil samples collected , 18.99%of them lacked or potentially lacked in sulphur .关键词
开阳/植烟土壤/交换性钙/交换性镁/有效硫Key words
Kaiyang/Tobacco-planting soil/Exchangeable calcium/Exchangeable magnesium/Available surphur分类
农业科技引用本文复制引用
廖勇,李岭,刁朝强,周建云,刘冬,何俊瑜,陆引罡..贵阳市开阳县植烟土壤有效中量元素调查与分析[J].江西农业学报,2015,(4):37-40,4.基金项目
湖南中烟责任有限公司项目（贵大H110378号）；国家自然科学基金项目（41261095）；贵州省科技厅创新人才团队建设项目［黪科合人才团队（2013）4020］。 （）
