白粉病是苦瓜的主要病害之一,常造成叶片枯黄死亡,植株早衰。为筛选出防治该病的高效安全药剂,笔者进行了田间药效试验。供试苦瓜品种为白玉,药剂有50%醚菌酯水分散粒剂、70%甲基硫菌灵可湿性粉剂、25%吡唑醚菌酯乳油、60%哗醚·代森联水分散粒剂、5%己唑醇悬浮剂。施药时苦瓜处于结果盛期,田间白粉病已普遍发生。试验结果表明,25%吡唑醚菌酯乳 Powdery mildew is one of the main diseases of bitter gourd, often resulting in dead leaves, plant premature aging. In order to filter out the effective and safe medicament for the prevention and treatment of the disease, the author conducted the field efficacy test. The test bitter gourd varieties for the white jade, agents are 50% ketones ester water dispersible granules, 70% thiophanate-methyl WP, 25% pyraclostrobin EC, 60% ether ether generation water dispersible tablets Agent, 5% hexaconazole suspension. Balsam pear application is in the peak results, the field of powdery mildew has occurred. The test results show that 25% pyraclostrobin emulsion