摘要
采用室内模拟试验方法,研究毒死蜱与乙草胺单一污染和复合污染对土壤酶活性与微生物生物量碳的影响。结果表明,在试验剂量范围内,毒死蜱与乙草胺单一污染和复合污染对过氧化氢酶都产生抑制作用,而对脲酶有激活效应,对酸性磷酸单酯酶和碱性磷酸单酯酶的影响表现为先激活后抑制的效应,其中乙草胺单一污染对过氧化氢酶和酸性磷酸单酯酶抑制作用显著。毒死蜱与乙草胺在单一污染和复合污染的初期能提高土壤微生物生物量碳,但至第14天后复合污染显示出抑制作用。
Effects of single and combined pollution of chlorpyrifos and acetochlor on soil enzyme activity and microbial biomass carbon were investigated in an indoor simulation experiment. Results show that response to the pollution varied with the enzymes. The catalase was inhibited, while the urease was enhanced in activity under the stress of either single or combined pollution of chlorpyrifos and acetochlor. Both acidic phosphomonoesterase and alkaline phosphomonoesterase were first stimulated and then inhibited in the same condition. However, application of acetochlor alone showed the most significant inhibitive effect on catalase and acidic phosphomonoesterase. Soil microbial biomass carbon was enhanced under the stress of simple pollution of chlorpyrifos or acetochlor in the initial stage, but it was inhibited after 14 days in the presence of combined pollution.
出处
《生态与农村环境学报》
CAS
CSSCI
CSCD
北大核心
2008年第2期57-60,共4页
Journal of Ecology and Rural Environment
基金
国家重点基础研究发展计划(2002CB410805)
江苏省高校“青蓝工程”资助项目
关键词
毒死蜱
乙草胺
复合污染
土壤酶
微生物生物量碳
chlorpyrifos
acetochlor
combined pollution
soil enzyme
microbial biomass carbon
