生态与农村环境学报2017，Vol.33Issue(6)：564-570,7.DOI:10.11934/j.issn.1673-4831.2017.06.011
有机耕作方式对我国南方典型土壤质量影响的评价
Assessment of Quality of Soils Under Organic Farming in South China
摘要
Abstract
Little information is available as reference for assessment of effect of organic farming on soil quality with soils under conventional farming as control, although large volumes of reports demonstrate that organic farming can ameliorate degraded soils.Soil samples were collected from 14 farms (i.e.7 organic farms and 7 neighbouring conventional farms) for analysis of soil physicochemical properties, i.e.bulk density, pH, organic matter, total N, total P, readily available P and readily available K, and biological properties as well, i.e.microbial biomass carbon, diversity and dominance of microbial communities, and population, diversity and dominance of nematodes.Statistics of the 13 indices was done for principal components analysis.Out of the 13, 6 (TN, pH, bulk density, microbial biomass carbon, and population and dominance of nematodes) were cited to form a minimum data set (MDS).Soil quality index (Is,q,6) based on MDS was in the range of 039-072 in the soils under organic farming and in the range of 018-054 in the soils under conventional farming.The soils under organic farming, except in one sampling site were all higher than those under conventional farming in Is,q,6.Based on the fact that the 6 indices in MDS, particularly dominancy of the nematode community, contributed 124%-218% to soil quality and that Is,q,13(SQI derived from the 13 soil property indices) is significantly related to Is,q,6(r=089, P<005), it is quite clear that MDS-based soil quality assessment is a workable and effective tool.关键词
有机农场/常规农场/最小数据集/主成分分析/土壤质量指数Key words
organic farm/conventional farm/minimum data set/principal component analysis/soil quality index分类
资源环境引用本文复制引用
王磊,李旭,张纪兵,肖兴基,杨静,席运官,陈秋会,殷奎阳,李刚,张弛,田伟,张红旗..有机耕作方式对我国南方典型土壤质量影响的评价[J].生态与农村环境学报,2017,33(6):564-570,7.基金项目
国家科技支撑计划(2014BAK19B01) （2014BAK19B01）
环保公益性行业科研专项(201309036) （201309036）
国家自然科学基金青年基金(41401336) （41401336）
中央级公益性科研院所基本科研业务费(20160201,20160303) （20160201,20160303）
云南省环保公益专项(45010) （45010）
公益性行业(农业)科研专项(201003014-2) （农业）
