【正文】
江 大慶 161090 ) 摘 要:利用長期施用長殘留除草劑咪唑乙煙酸的土壤,采用高壓富集的方法,從兩種培養(yǎng)液中共分離出3株細菌,根據(jù)菌株的形態(tài)特性和生理生化特征,對此3個菌株進行了初步鑒定:菌株X為丙酸桿菌屬(Propionibacterium);菌株Y為海球菌屬(Marinococcus);菌株Z為酸單胞桿菌屬(Acidomonas);菌株X、Y和Z的最適生長溫度分別是30和35 ℃;菌株X和Z在中性偏酸的培養(yǎng)基中生長較好,菌株Y在偏堿培養(yǎng)基中生長較好;菌株X、Y、%、1%%;菌株Y生長最適咪唑乙煙酸的濃度是10 mg .L1中文摘要200字左右,應有獨立性和自含性,采用第三人稱定法,不用“本文”、“作者”等主語。;X172 文獻標志碼:ASeparation英文題目第一個單詞首字母大寫,其他單詞除均小寫(專有名詞除外)。2. College of Life Sciences, Northeast Agricultural University, Harbin 150030, China。: Using the high pressure enrichment method, three bacteria strains in two culture media were separated from soil, which contained the herbicide imazethapyr and were long polluted by the pesticide. By batch culture with clomazone as a sole carbon, strain X was identified as Propionibacterium, strain Y was identified as Marinococcu, and strain Z was identified as Acidomonas according to the morphological and physiological characters. The optimal temperature for growth of X, Y and Z were 30, 30, and 35℃, respectively. The growth of strain X and Z was good in neutral and weak acidic culture media, but strain Y was appropriate to growth under alkalescence。L1, and that for X and Z was 20 mg . degrading microorganisms。 identification。②其次是理論依據(jù)和實驗設備基礎、預期目標、本課題在學科領域中所占的地位、對他人已有成果的評價及相互關系、新概念和新術語的定義等等。③寫作要求突出重點。一般教科書上已有的知識,或人所共知、顯而易見的功用或意義,在引言中不必贅述,重點寫好目的、意義和背景。咪唑乙煙酸(Imazethapyr)是由美國氰胺公司(現(xiàn)歸并為德國BASF公司)于80年代初開發(fā)研制的大豆田選擇性苗前、苗后早期除草劑,主要防除稗草、反枝莧等一年生禾本科雜草和闊葉雜草。而豆科植物吸收咪唑乙煙酸后,在體內很快被分解,因此是大豆田優(yōu)良的除草劑[34]。殘留在土壤中的低量咪唑乙煙酸殘易對水稻、馬鈴薯、甜菜、油菜、番茄、甘藍等敏感的后茬作物產生藥害[7],嚴重影響了黑龍江省種植業(yè)結構的調整和換茬輪作,已成為亟待解決的農業(yè)生產問題。本研究立足大豆田咪唑乙煙酸的使用情況,針對咪唑乙煙酸殘留的問題,篩選出能夠高效降解咪唑乙煙酸的微生物,對其進行鑒定、馴化和培養(yǎng),并進一步研究其降解效果以及生物降解菌劑等,旨在解決咪唑乙煙酸的殘留藥害問題,力爭延長這一大豆田優(yōu)良除草劑品種的使用壽命,同時為該除草劑環(huán)境污染的治理開辟一條有效的途徑,為農業(yè)的可持續(xù)發(fā)展提供有效的技術保障?!」┰囃寥馈 〔勺詵|北農業(yè)大學香坊農場長期施用過長殘效除草劑咪唑乙煙酸的土壤。、蛋白胨5 g、瓊脂18 g、蒸餾水1 000 mL,pH ~;富集培養(yǎng)液:用于