摘要
[目的]研究噻唑锌和嘧菌酯复配对黄瓜霜霉病菌的杀菌活性,对防治黄瓜霜霉病具有指导意义。[方法]采用孢子悬浮液接种法测定,2者按6种不同比例混配后稀释成5个质量浓度进行喷雾处理,24 h后接种黄瓜霜霉病菌孢子悬浮液。[结果]噻唑锌和嘧菌酯对黄瓜霜霉病的EC50值分别为817.46、2.93 mg/L;2者以3∶2、2∶5、2∶7混配时有一定的增效作用。[结论]综合考虑经济效益和增效作用,2者以3∶2混配为最适配比。
[Aims] The control effect of saizuoxin and azoxystrobin mixed fungicides on Pseudoperonospora cubensis were studied to provide guide for controlling Pseudoperonospora cubensis. [Methods] The two fungicides were mixed at six different ratio and diluted into five concentration, then inoculated Pseudoperonospora cubensis on leaves after 24 hours. [Results] The EC50 values of saizuoxin and azoxystrobin were 817.46 and 2.93 mg/L, respectively. The saizuoxin and azoxystrobin mixtures at the ratios of 3 ： 2, 2 ： 5 and 2 ： 7 had synergy effect. [Conclusions] The best ratio of the two fungicides Was 3 ： 2 considering the economic benefit and synergism comprehensively.
出处
《农药》
CAS
北大核心
2012年第1期73-74,共2页
Agrochemicals
关键词
噻唑锌
嘧菌酯
黄瓜霜霉病
毒力
增效作用
saizuoxin
azoxystrobin
pseudoperonospora cubensis
toxicity
synergistic effect
