湖南农业大学学报（自然科学版）2017，Vol.43Issue(1)：19-25,7.DOI:10.13331/j.cnki.jhau.2017.01.004
湖南龙山县植烟土壤交换性钙镁的空间分布及影响因素
Spatial distribution of exchangeable calcium and magnesium contents of tobacco-growing soil in Longshan and its influencing factors
摘要
Abstract
To study the spatial distribution characteristics of exchangeable calcium (Ca) and magnesium (Mg) contents of tobacco–growing soil in Longshan and its influencing factors. Using the technology of global positioning system (GPS), 300 representative soil samples from Longshan were collected to analyze the spatial distribution of soil exchangeable Ca, Mg contents and Ca/Mg ratios, as well as their influencing factors. The results were as follows: The average content of exchangeable calcium in soil was 7.95 cmol/kg ranging from 0.25 to 25.62 cmol/kg, and exchangeable calcium contents in 30.14% of the soil samples were in the appropriate level (6.00–10.00 cmol/kg); the average content of exchangeable magnesium in soil was 1.68 cmol/kg ranging from 0.02 to 5.74 cmol/kg, and exchangeable magnesium contents in only 15.38% of the soil samples were in the appropriate level (1.00–11.50 cmol/kg); the average value of Ca/Mg ratios was 7.63 ranging from1.99 to 84.76, and Ca/Mg ratios in 25.34% of the soil samples of were in the appropriate level (5–10). The exchangeable calcium content in soil was extremely significantly influenced by altitude, pH, soil parent material and soil texture, and significantly influenced by terrain. The content of exchangeable magnesium in soil was extremely significantly influenced by altitude, pH, terrain, soil parent material and soil texture. Ca/Mg ratios was extremely significantly influenced by altitude, and significantly influenced by terrain.关键词
植烟土壤/交换性钙/交换性镁/钙镁比值/龙山县Key words
tobacco-growing soil/exchangeable calcium/exchangeable magnesium/Ca/Mg ratio/Longshan county分类
农业科技引用本文复制引用
毛辉,吴志科,卿湘涛,滕羿和,谭军,向德明,张黎明,黎娟,李强..湖南龙山县植烟土壤交换性钙镁的空间分布及影响因素[J].湖南农业大学学报（自然科学版）,2017,43(1):19-25,7.基金项目
湖南省烟草公司项目(XX16-17Aa01，XX15-17Aa02)；湖南省烟草公司湘西自治州公司项目(州烟司2012-37) （XX16-17Aa01，XX15-17Aa02）
