土壤学报2016，Vol.53Issue(5)：1326-1333,8.DOI:10.11766/trxb201509070316
基于最小数据集的南方地区冷浸田土壤质量评价
Minimum Dataset-based Soil Quality Assessment of Waterlogged Paddy Field in South China
摘要
Abstract
Investigations and analyses were done of the data of soil physical-chemical and biological properties of waterlogged paddy fields in seven provinces of South China in an attempt to screen out indices for soil quality assessment of waterlogged paddy fields and build up a minimum dataset for the assessment. Results show as follows. Waterlogged paddy fields differed sharply from non-waterlogged paddy fields and were 26.1%,11.2% and 12.3% higher respectively in content of soil organic matter,total nitrogen and C/N,and 84.6% lower in available P. The two types of paddy fields did not varied much in content of soil total phosphorus,available nitrogen and available potassium. Besides,the former was 37.6%,91.5%,108.1%, 17.0%,349.5%,143.1% and 217.9%,respectively,higher than the latter in content of soil moisture, available iron,available manganese,available zinc,Fe2+,Mn2+,total reducing substance and significantly or 43.8% and 25.2%,respectively,lower in soil microbial biomass carbon and phosphatase activity. However,the former was significantly or 21.2% higher than the latter in soil catalase activity,but did not differ much from the latter in invertase activity. Other than those,the former had a nematode population density of 301.9±78.5 individuals 100g dry soil-1,which was significantly lower than that in the latter. By means of paired sample T test and principal components analysis,it was found that the minimum data set (MDS)for soil quality assessment of waterlogged paddy fields should encompass the following six indices, that is,pH,total nitrogen,available manganese,Fe2+,CN ratio and nematode population,which are significantly lower than their corresponding ones for the non-waterlogged paddy fields. All the findings in this study may be of some important significance to soil quality assessment,soil amelioration of cold waterlogged paddy fields.关键词
冷浸田/土壤质量/评价指标/最小数据集/土壤线虫Key words
Waterlogged paddy/Soil quality/Assessment index/Minimum data set/Soil nematode分类
农业科技引用本文复制引用
邓绍欢,曾令涛,关强,李鹏,刘满强,李辉信,焦加国..基于最小数据集的南方地区冷浸田土壤质量评价[J].土壤学报,2016,53(5):1326-1333,8.基金项目
国家自然科学基金项目（41301269）和公益性行业（农业）科研专项（201003059）资助 Supported by the National Natural Science Foundation（No.41301269）and Commonweal Project of the Ministry of Agriculture of China （）
