Control Efficacy of Validamycin A·(0.2 Billion Spores/ml) Paenibacillus polymyxa DN-1 3% AS for Rice Sheath Blight  

3%井冈霉素A·(2亿芽胞/毫升)多粘类芽胞杆菌水剂防治水稻纹枯病试验（英文）

作　　者：胡飞[1] 苏卫华[1] 李昌春[1] 周子燕[1] 胡本进[1] 徐丽娜[1] 郑进国 

机构地区：[1]安徽省农业科学院植物保护与农产品质量安全研究所,安徽合肥230031 [2]舒城县舒茶镇农业综合服务中心,安徽舒城231300

出　　处：《Agricultural Science & Technology》2016年第11期2615-2618,共4页农业科学与技术（英文版）

基　　金：Supported by National Agricultural Science and Technology Achievement Transformation Fund of China(2010GB2C300196);Modern Agricultural Production Development Fund(Rice Industry)Project of Anhui Academy of Agricultural Sciences;Integration and Demonstration of Chemical Fertilizer and Agrochemical Reduction and Efficiency Increasing Technology for Rice in Rice-wheat(rape)Rotation Areas in Anhui(2016YFD0200806)~~

摘　　要：With validamycin A.（0.2 billion spores/ml） Paenibacillus polymyxa DN-1 3% AS as the test agent, the effects of different dosage and different application time on the control efficacy for＇ rich sheath blight were investigated. The results of two- year test showed that when the application amount was in the range of 45-90 g.a.i/ hm^2, the field efficacy of validamycin A-（0.2 billion spores/ml） P. polymyxa DN-1 3% AS in the initial infection stage of rich sheath blight （Le., the diseased plant rate was below 5%） reached 80.38%-89.06%, and that in the peak infection stage （i.e., the diseased plant rate was higher than 10%） reached only 41.12%-53.26%. The field efficacy of validamycin A.（0.2 billion spores/ml） P. polymyxa DN-1 3% AS at the early onset of rich sheath blight was significantly better than that at the onset, so that the application time of validamycin A .（0.2 billion spores/ml） P. polymyxa DN-1 3% AS should be appropriately brought forward in the prevention and control of rice sheath blight.以3%井冈霉素A·(2亿芽胞/毫升)多粘类芽胞杆菌水剂为供试药剂,通过田间试验研究不同剂量、不同施药时期对水稻纹枯病的防治效果。2年试验结果表明,当用药量在45~90 g.a.i/hm^2时,药后20 d,发病初期(即病株率在5%以下)预先防治的田间防效达80.38%~89.06%,而发病期(即病株率在10%以上)施药的田间防效仅达41.12%~53.26%;在发病初期预先防治效果要明显优于发病期再施药,从而确定该药剂防治水稻纹枯病时期应适当前移。

关 键 词：Validamycin A-（0.2 billion spores/roll P. polymyxa DN-1 3% AS Rice sheath blight Initial infection stage Peak infection stage Control efficacy 

分 类 号：S435.111.42[农业科学—农业昆虫与害虫防治]