摘要
在实验室控制条件下,研究了0、10、50、100、200mg/kg乙酰甲胺磷对土壤中可培养微生物数量及蛋白酶、过氧化氢酶、脲酶活性的影响。结果表明:在培养初期,乙酰甲胺磷对细菌生长具有促进作用,对真菌、放线菌的生长有抑制作用,均和乙酰甲胺磷浓度呈显著正相关,但这些影响均可在短期恢复。乙酰甲胺磷对土壤中蛋白酶活性表现出先抑制后恢复的效应,对过氧化氢酶却表现出先激活后恢复的效应,而低于200 mg/kg的乙酰甲胺磷对脲酶活性影响较小。
Acephate （ACEP） is an insecticide used on fruit trees, leaf vegetables, cotton and other horticultural crops to control sucking insets. Influence of ACEP on soil microorganism and en- zyme （urease and actinomyces） activities were studied by traditional microbial cultivation and ti- tration means under the laboratory control condition. ACEP was added to a soil sample at dosages of 0, 10, 50, 100 and 200 mg/kg respectively. The results showed that the impact of ACEP upon the quantity of microbes was shot-term action, In the first cultivate stage, the effect of ACEP up- on the quantity of soil microbial populations had a correlation with ACEP concentrations. ACEP increased the quantity of bacteria obviously while led the soil fungi and Actinomyces reduced and then rose again. Under the concentration of test, the activities of proteinase and catlase were acti- vated, and the higher the ACEP concentration the greater and longer the influence. The low con- centrations of ACEP （〈 200 mg/kg） had faint effects on the activities of urease.
出处
《河南农业科学》
CSCD
北大核心
2009年第8期59-62,共4页
Journal of Henan Agricultural Sciences
基金
江西省教育厅科技项目(赣教技字[2007]322)
吉安市2007年科技项目
井冈山大学2007年度自然科学基金项目
