烟草科技2017，Vol.50Issue(5)：24-30,7.DOI:10.16135/j.issn1002-0861.2016.0132
湘西州植烟土壤pH和中微量元素分布及其相关关系
Distribution characteristics of pH and medium/trace elements in tobacco planting soils in Xiangxi Autonomous Prefecture and their relationship
摘要
Abstract
To establish the distribution characteristics of pH and medium/trace elements in tobacco planting soils in Xiangxi Autonomous Prefecture and their relationship, 1242 soil samples were collected from the main tobacco planting areas in Xiangxi in 2015, and the suitability distribution and county level distribution of pH and medium/trace elements in tobacco planting soils from Xiangxi and their quantitative relationship were studied by grouped regression and grey correlation analyses. The results showed that: 1)pH of tobacco planting soils in Xiangxi ranged from 4.17 to 8.17 with the average value of 6.12; the samples with suitable pH (5.5-7.0)for tobacco plantation accounted for 34.06%. 2)The contents of exchangeable calcium and available boron in tobacco planting soils in Xiangxi were suitable for tobacco cultivation, the contents of exchangeable magnesium, available zinc and available molybdenum were rich, and the contents of available sulfur, available iron, available manganese and available copper were slightly or over higher. 3) There were extremely significant differences of pH and medium/trace elements in soils among the main tobacco planting counties. 4)With the rise of soil pH, the contents of exchangeable calcium and exchangeable magnesium increased, while the contents of available molybdenum, available iron, available sulfur and available copper decreased; and the relationships between the contents of available zinc, available boron and available manganese with soil pH were curved type. 5)The effects of soil pH on medium/trace elements were in the rank of exchangeable calcium>exchangeable magnesium>available boron>available zinc>available molybdenum>available copper>available manganese>available sulfur>available iron.关键词
植烟土壤/pH/中微量元素/分组回归/灰色关联Key words
Tobacco planting soil/pH/Medium/trace element/Grouped regression/Grey correlation分类
农业科技引用本文复制引用
邓小华,张瑶,田峰,陈治锋,黎承宾,田明慧,张黎明,张明发..湘西州植烟土壤pH和中微量元素分布及其相关关系[J].烟草科技,2017,50(5):24-30,7.基金项目
湖南省烟草专卖局科技项目"湘西烟区土壤pH变化机制及调控技术研究与应用"(xx15-18Aa01) （xx15-18Aa01）
湖南省烟草专卖局重点项目"湘西州烟区植烟土壤维护和改良研究与示范"(13-14ZDAa03). （13-14ZDAa03）
