丙硫菌唑与抑霉唑混剂对稻恶苗病菌的联合毒力及田间防效  

Prothioconazole and Imazalil Mixtures:Co-toxicity and Field Control Efficacy on Fungus of Rice Bakanae Disease

作　　者：陈宏州[1] 杨志香 张新建 杨红福[1] 徐超 缪康[1] 陈源[1] 姚克兵[1] Chen Hongzhou;Yang Zhixiang;Zhang Xinjian;Yang Hongfu;Xu Chao;Miao Kang;Chen Yuan;Yao Kebing(Zhenjiang Institute of Agricultural Sciences in Hilly Area of Jiangsu Province,Jurong Jiangsu 212400;College of Plant Protection,Nanjing Agricultural University,Nanjing 210095;Yangzhou Suling Pesticide Chemical Co.,Ltd.,Yangzhou Jiangsu 225231)

机构地区：[1]江苏丘陵地区镇江农业科学研究所,江苏句容212400 [2]南京农业大学植物保护学院,南京210095 [3]扬州市苏灵农药化工有限公司,江苏扬州225231

出　　处：《中国农学通报》2021年第14期158-164,共7页Chinese Agricultural Science Bulletin

基　　金：江苏省农业科技自主创新资金项目“水稻重要病虫害绿色防控技术研发与应用”[CX(18)1003];江苏省“六大人才高峰”高层次人才项目“水稻恶苗病病原种群鉴定及抗药性监测”(NY-256)。

摘　　要：为探明丙硫菌唑与抑霉唑混剂对稻恶苗病菌的联合毒力及田间防效,开发防治稻恶苗病的新药剂,本研究以藤仓镰孢菌为试验对象,采用菌丝生长速率法分别检测了丙硫菌唑、抑霉唑及其7种配比混剂对藤仓镰孢菌的毒力,并进行了最佳配比制剂的田间药效试验。结果表明,丙硫菌唑与抑霉唑配比为1:1时增效系数为1.9778,增效作用最显著。田间药效试验中,5%丙硫菌唑?抑霉唑WS 500倍液在苗期、分蘖期和抽穗期的防效分别为91.08%、92.85%和89.52%,防效均高于4.23%甲霜?种菌唑ME 1000倍液和12%氟啶?戊?杀螟WS 1000倍液的防效,并且各处理对水稻种子萌发和成苗安全。5%丙硫菌唑?抑霉唑WS对稻恶苗病防效优良,对水稻生长安全,可开发为稻恶苗病防治药剂。To explore the co-toxicity and field control efficacy of the mixtures of prothioconazole and imazalil on rice bakanae disease,and develop a new reagent for controlling rice bakanae disease,Fusarium fujikuroi was used as material in this study.The toxicity of prothioconazole,imazalil and their seven mixtures on F.fujikuroi was detected by using mycelium growth rate method,and field control tests with the optimum formulation were conducted.The results showed that the synergistic coefficient was 1.9778 when the mixture ratio of prothioconazole and imazalil was 1:1,the synergistic effect was the most significant.In the field control efficacy test,the control efficacy of 500 dilution of 5%prothioconazole·imazalil WS at seedling stage,tillering stage and heading stage were 91.08%,92.85%,and 89.52%,respectively,which were higher than that of 1000 dilution of 4.23%metalaxyl·ipconazole ME or 1000 dilution of 12%fluazinam·tebuconazole·cartap WS,and all treatments were safe to the seed germination and seedling formation of rice.In conclusion,5%prothioconazole·imazalil WS could provide excellent control efficacy on rice bakanae disease and is safe for rice growth,which can be developed as a rice bakanae disease control agent.

关 键 词：水稻恶苗病 丙硫菌唑 抑霉唑 联合毒力 防治效果 

分 类 号：S435.111[农业科学—农业昆虫与害虫防治]