摘要
采用微宇宙培养法,通过蚯蚓对比试验,研究了甲胺磷和Cu分别与乙草胺共存条件下黑土中乙草胺降解过程的动态变化,探讨利用蚯蚓强化乙草胺解毒过程的可行性.结果表明,无论是否加入蚯蚓,在乙草胺单一污染的土壤中乙草胺的降解符合一级反应动力学规律;蚯蚓活动促进了乙草胺的降解解毒过程;土壤中甲胺磷或Cu分别与乙草胺共存时,对乙草胺的降解有抑制效应;甲胺磷与乙草胺复合及Cu与较高浓度乙草胺复合时,改变了乙草胺随时间的降解变化规律;而Cu与较低浓度乙草胺复合时,对其降解解毒过程无明显影响.
By using microcosm culture method, this paper studied the dynamic changes of acetochlor degradation by earthworm in phaeozem with methamidophos or copper addition, aimed to approach the feasibility of using earthworm to intensify the detoxification of acetochlor. The results showed that the dynamics of acetochlor degradation accorded with the first-order reaction kinetics, whether earthworm existed or not. The activities of earthworm accelerated the detoxification of acetochlor, and the coexistence of methamidophos or copper with acetochlor evidently inhibited J the degradation of acetochlor. The coexistence of methamidophos and acetochlor or of copper and higher concentration acetochlor altered the dynamics of acetochlor degradation, while the coexistence of copper and lower concentration acetochlor didn＇ t have any obvious effect on the detoxification of acetoehlor.
出处
《应用生态学报》
CAS
CSCD
北大核心
2006年第10期1958-1962,共5页
Chinese Journal of Applied Ecology
基金
国家杰出青年科学基金项目(20225722)
国家基础研究重点规划资助项目(2004CB418503).
关键词
乙草胺
甲胺磷
铜
复合污染
蚯蚓
解毒作用
Acetochlor, Methamidophos, Copper, Combined pollution, Earthworm, Detoxification.
