生态环境学报Issue(3)：490-495,6.
污灌对农田土壤微生物特性影响研究
Effects of sewage irrigation on quantity and distribution of microorganisms in soils
摘要
Abstract
Sewage irrigation has an important effect on farmland soil properties and crop growth. In order to provide theoretical basis for putting sewage irrigation into practical use, microorganisms characteristics in soils were studied. The plate counting method and most-probable-number (MPN) method were employed to research the effects of sewage irrigation on quantity and distribution of common microorganisms such as bacteria, actinomycetes and fungus and functional microorganisms such as nitrite bacteria (NOB), nitrate bacteria (NB), ammonia oxidizing bacteria (AOB), denitrifying bacteria (DB), aerobic nitrogens-fixing bacteria (ANB) and cellulose decomposing bacteria (CDB) in soils. And the correlation between microorganisms quantities and physical and chemical properties was also analyzed. The results indicated that the quantities of actinomycetes, fungus, nitrite bacteria, nitrate bacteria and denitrifying bacteria were reduced, but the quantities of bacteria, ammonia oxidizing bacteria and aerobic cellulose decomposing bacteria were increased significantly (P<0.05) after sewage irrigation. There was a big difference among soil microorganisms quantities of soybean, corn and rice root system, but the quantities variation of fungus, aerobic nitrogens-fixing bacteria and cellulose decomposing bacteria of them were always significant(P<0.05). The correlation analysis showed that organic matter was positively correlated to bacteria (r = 0.843, P<0.05) , denitrifying bacteria (r=0.220, P<0.05) and cellulose decomposing bacteria (r=0.220, P<0.05), there was a significant negatively correlation between actinomycetes and total phosphorus(r=-0.921, P<0.01), ammonia nitrogen was positively correlated to nitrite bacteria (r = 0.973, P<0.05) and aerobic nitrogens-fixing bacteria (r=0.988, P<0.05), available phosphorus was negatively correlated to ammonia oxidizing bacteria (r=-0.967, P<0.05) and denitrifying bacteria (r=-0.988, P<0.05). The research showed that sewage irrigation had significant effects on microorganisms characteristics quantities and soil physical and chemical properties, and could have some effects on crop growth.关键词
污水灌溉/土壤微生物/土壤特性Key words
sewage irrigation/soil microorganisms/soil properties分类
资源环境引用本文复制引用
张翠英,汪永进,徐德兰,王同勋..污灌对农田土壤微生物特性影响研究[J].生态环境学报,2014,(3):490-495,6.基金项目
国家住房和城乡建设部科学技术计划项目（2012K79）；徐州市科技计划项目（XM12B087, XM12B086）；徐州工程学院青年项目 （）
