7种杀菌剂对水稻白叶枯病防效评价  

Evaluation on the control efficacy of seven fungicides against rice bacterial blight

作　　者：冯爱卿[1] 陈深[1] 汪聪颖[1] 陈凯玲[1] 封金奇 杨健源[1] 曾列先[1] 朱小源[1] FENG Aiqing;CHEN Shen;WANG Congying;CHEN Kailing;FENG Jinqi;YANG Jianyuan;ZENG Liexian;ZHU Xiaoyuan(Plant Protection Research Institute,Guangdong Academy of Agricultural Sciences,Guangdong Provincial Key Laboratory of High Technology for Plant Protection,Guangzhou 510640,China)

机构地区：[1]广东省农业科学院植物保护研究所,广东省植物保护新技术重点实验室,广州510640

出　　处：《植物保护》2020年第4期282-286,共5页Plant Protection

基　　金：水稻产业技术体系(CARS-01-32,2019KJ105);国家重点研发计划(2016YFD0300707,2017YFD0100100);广东省科技项目(2015B020231003,2017A020224014);广东省农业科学院学科团队建设项目(201613TD)。

摘　　要：为科学合理选用防治白叶枯病的杀菌剂,本研究采用田间人工剪叶接种方法,开展了7种杀菌剂对白叶枯病防效评价。测试的杀菌剂对白叶枯病的田间防效和病斑抑制率均差异显著,其中20%噻唑锌SC防效最好,其次是20%噻菌铜SC,其他药剂防效和病斑抑制效果均较差。20%噻唑锌SC 450.00 mL/hm^2喷施2次处理的防效达62.84%、病斑抑制率为73.11%;20%噻菌铜SC 450.00 mL/hm^2防效为43.15%,病斑抑制率为54.84%。高效药剂的合理选用对提高病害防效具有显著作用。20%噻唑锌SC和20%噻菌铜SC是目前防治白叶枯病的较好药剂,建议轮换使用。To scientifically and rationally select fungicides for the control of rice bacterial blight caused by Xanthomonas oryzae pv.oryzae,the control effect of 7 fungicides was evaluated.The result showed that there were significant differences in field control efficacy and lesion inhibition rate,among which zinc thiazole 20%SC was the best,followed by thiodiazole-copper 20%SC,while other fungicides showed poor efficacy and lesion inhibition rate.The control efficacy and lesion inhibition rate of spraying zinc thiazole 20%SC at 450.00 mL/hm^2 twice were 62.84%and 73.11%,respectively,while those of thiodiazole-copper 20%SC at 450.00 mL/hm^2 were 43.15%and 54.84%,respectively.Among the tested fungicides,Zinc thiazole 20%SC and thiodiazole-copper 20%SC are the best and can be recommended to be used alternatively in rice bacterial blight control.

关 键 词：水稻 白叶枯病 杀菌剂 防效 

分 类 号：S435.111.47[农业科学—农业昆虫与害虫防治]