百菌清烟剂防治黄瓜霜霉病相关技术试验

Study on Controling Cucumber Downy Mildew With‘Bai Jun Qing' Smoke Agent

研究了保护地条件下百菌清系列烟剂有效成份含量、施药量、施药次数、间隔期4项植保措施与黄瓜霜霉病防治效果的关系。参试4因子中以1次施药量作用最大。最优方案为：百菌清烟剂有效成份含量30％，每次施药量300g／667m2，间隔8d（天），连施4次。

The relationship between active component, amount of single application, times of application,interval of 'Bai Jun Qing' smoke agent to cucumber in greenhouse and its controling effect on downy mildew was analysised in orthogonal method. Of the four factors,amount of single application was the most important. In eddition,the most excellent combination was found as follows: 30% for active component, 300 g/667 m2 in single application, 8 d for interval,and 4 times of application in the growth Period.