3种杀菌剂对葡萄霜霉病菌的室内毒力测定  

Toxicity Test of 3 Different Fungicides on Grape Downy Mildew at the Eastern Foot of Helan Mountain

作　　者：宋双[1] 姜彩鸽[1] 王国珍[1] 张怡[1] Song Shuang;Jiang Caige;Wang Guozhen;Zhang Yi(Institute of Plant Protection,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan,Ningxia 750002)

机构地区：[1]宁夏农林科学院植物保护研究所,宁夏银川750002

出　　处：《宁夏农林科技》2020年第9期24-27,31,共5页Journal of Ningxia Agriculture and Forestry Science and Technology

基　　金：宁夏回族自治区自然科学基金“贺兰山东麓葡萄霜霉病菌致病性分化与遗传多样性研究”(2020AAC03312);宁夏农林科学院全产业链创新示范项目“酿酒葡萄病虫害绿色防控技术研究”(NKYZ-16-06-03);宁夏“十三五”重大科技项目(2018ZDKJ0223);国家现代农业产业技术体系“贺兰山东麓综合实验站专项资金”(CARS-29)。

摘　　要：【目的】为筛选出能有效控制葡萄霜霉病菌的杀菌剂,并为生产中合理使用杀菌剂提供指导。【方法】采用离体叶盘保湿法,测定了3种不同类型杀菌剂对贺兰山东麓葡萄霜霉病菌的毒力。【结果】3种内吸性杀菌剂对贺兰山东麓葡萄霜霉病均有一定的抑制作用。其中烯酰吗啉的抑制活性远高于其他2种杀菌剂,其平均EC50值仅为0.0184μg/mL;霜脲氰的抑制活性稍弱,其平均EC50值为0.0856μg/mL;甲霜灵的抑菌效果最弱,其平均EC50值为0.1209μg/mL。【结论】98%烯酰吗啉对葡萄霜霉病的毒力最强,在连续降雨后喷施可以有效控制葡萄霜霉病的发生。[Aims]This study aims to screen out effective fungicides for control of grape downy mildewand provide reference for guiding the rational use of fungicides in production.[Methods]Toxicity of three kinds of fungicides collected from different areas at the eastern foot of Helan Mountain was determined by using leaf disc method.[Results]Three fungicides showed high antibacterial activity against grape downy mildew.The bacteriostatic activity of dimethomorph was higher than the other two fungicides,and the average EC50 was 0.0184μg/mL;the bacteriostatic activity of permethasam was slightly weaker,and its average EC50 was 0.0856μg/mL;the bacteriostatic effect of metalaxyl was poor,and its average EC50 was 0.1209μg/mL.[Conclusions]Dimethomorph has very strong inhibiting effect on grape downy mildew and can be used as a temporary relief measure to control grape downy mildew when rainy days.

关 键 词：葡萄霜霉病菌 杀菌剂 毒力测定 

分 类 号：S436.631.19[农业科学—农业昆虫与害虫防治]