中国烟草科学Issue(3)：51-56,6.DOI:10.13496/j.issn.1007-5119.2015.03.010
重庆典型烟区土壤有机质及其活性组分的分布特征
Distribution Characteristics of Soil Organic Matter and its Active Ingredients in the Typical Tobacco-growing Regions in Chongqing
摘要
Abstract
To understand the quantity and quality situation of soil organic matter in the typical tobacco-growing regions, soil samples were collected in tobacco growing regions of three prefectures in Chongqing including Pengshui, Fengdu and Wushan. The contents of soil organic matter and its active ingredients were determined. The results showed that the contents of soil organic matter (SOM) ranged from 3.35 to 53.94 g/kg. The percentages of soil samples with SOM contents in the appropriate range (15-30 g/kg) for tobacco growing followed the order of Fengdu> Wushan> Pengshui, while theCV for Wushan was higher than those of Fengdu and Pengshui. As the SOM was divided into high labile organic matter (HLOM), mid-labile organic matter (MLOM) and labile organic matter (LOM) with 33,167 and 333 mmol/L KMnO4, respectively, their percentages in the SOM followed the order of Wushan>Fengdu>Pengshui, Fengdu>Wushan>Pengshui and Fengdu>Pengshui>Wushan, respectively. The content of HLOM, MLOM, LOM were significantly and positively correlated with the content of SOM, indicating that the active ingredient of soil organic matter may well reflect the dynamic changes of soil carbon, and therefore can be used as a indicator for the evaluation of soil fertility and soil quality.关键词
典型烟区/土壤有机质/活性组分Key words
typical tobacco-growing area/soil organic matter/active ingredients分类
农业科技引用本文复制引用
李玲,赵秀兰,魏世强,蒋珍茂,万川..重庆典型烟区土壤有机质及其活性组分的分布特征[J].中国烟草科学,2015,(3):51-56,6.基金项目
中国烟草总公司重庆市公司科技项目“重庆市植烟土壤有机质质量及评价” （）
