尖角突脐孢菌与化学除草剂混用防治稻田稗草效果的研究  

Prevention efficiency of Exserohilum monoceras with chemical herbicides against Echinochloa crus-galli in paddy field.

作　　者：陈勇[1] 倪汉文[2] 张宏军[3] 李晓晶[2] 李健强[4] 

机构地区：[1]华南农业大学农学院,广州510642 [2]中国农业大学农学与生物技术学院,北京100094 [3]农业部农药检定所,北京100026 [4]农业部农药化学与应用技术重点开放实验室,北京100094

出　　处：《应用生态学报》2005年第6期1104-1107,共4页Chinese Journal of Applied Ecology

基　　金：国家农业部农业结构调整重大技术研究专项(20030703B);华南农业大学校长基金资助项目.

摘　　要：用平板表面萌发法测定化学除草剂对尖角突脐孢菌菌株X27分生孢子萌发的影响,在温室研究该菌分生孢子干粉与化学除草剂的相互作用,在田间评价其混剂的除稗效果.结果表明,二氯喹啉酸和苄嘧磺隆对分生孢子的萌发影响不明显,其它除草剂均有不同程度的影响.在温室条件下,菌X27干粉与二氯喹啉酸混用具有明显的增效作用,与敌稗混用具有加成作用;在水田条件下,单用菌X27干粉防除稗草效果差,防效只有60%,而与低量的二氯喹啉酸混用,防效明显提高,达90%以上.This paper studied the impact of several herbicides on the conidium germination of Exserohilum monoceras strain X27 in petri dish,and the synergistic effects of the pathogen and chemical herbicide quinclorac or propanil against Echinochloa crus-galli in greenhouse.The prevention efficiency of the tank-mixture of pathogen and quinclorac was also evaluated in paddy field.The results showed that test herbicides except quinclorac and bensulfulfuron-methyl could inhibit conidium germination and hypha growth to different degree.A significant synergism was observed between the pathogen and quinclorac.Adding quinclorac could obviously increase the prevention efficiency against Echinochloa crus-galli.Under field condition,the single use of pathogen could only control about 60% of the weed,while the efficiency of pathogen-quinclorac mixture could reach 90%.

关 键 词：尖角突脐孢菌 稗草 化学除草剂 增效作用 水稻 

分 类 号：S451.21[农业科学—植物保护]