70％甲基硫菌灵·硫磺WP防治黄瓜白粉病田间药效试验

为了筛选防治黄瓜白粉病的适宜药剂，以黄瓜品种为试材，对大棚黄瓜白粉病用70％甲基硫茵灵·硫磺WP、70％甲基硫菌灵WP、50％硫磺SC以及15％三唑酮WP进行了防治试验。结果表明：70％甲基硫菌灵·硫磺WP对黄瓜白粉病有优良的防治效果，浓度为1350～1500mL·hm-2时防效最佳，连喷3次防效可达到82．58％～87．55％。

Field Efficacy Test of 70% Thiophanate-methyl on Prevention of Cucumber Powdery Mildew

In order to screen the suitable medicament to prevent cucumber powdery mildew,taking cucumber as experimental materials,control tests in greenhouse were conducted by spraying 70% Thiophanate-methyl. sul- phur WP,70% Thiophanate-methyl WP, 50% sulphur SC, and 15% three Triadimefon WP respectively. The results showed that 70% Thiophanate-methyl. sulphur WP had excellent effect,the control effect was the best by using 70% Thiophanate-methyl-sulphur WP 1 350-1 500 mL.hm2 ,and three times constantly,the control effect could be up to 82.58%-87.55%.