蔬菜

莴苣霜霉病高效低毒防治药剂的筛选

Screening of High Effi ciency and Low Toxicity Fungicides for Lettuce Downy Mildew

DOI：

英文关键词:Keywords: lettuce downy mildew high effi ciency low toxicity fungicide screening

基金项目:

作者	单位
杨绍丽1，谢标洪2，吴仁锋1*	1. 武汉市农业科学院蔬菜研究所，湖北武汉 430065；2. 江西省赣州农业学校，江西赣州 341100

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中文摘要:

为向生产上推荐高效、低毒、低残留的莴苣霜霉病防治药剂，选取1%申嗪霉素悬浮剂、30%吡唑醚菌酯水乳剂、20%霜脲氰悬浮剂、80%代森锰锌可湿性粉剂4种杀菌剂开展了防治莴苣霜霉病的田间药效试验，以80%烯酰吗啉可湿性粉剂常规使用药剂为对照，并设置空白对照。试验结果表明：20%霜脲氰悬浮剂防治效果偏低，不作为田间防治莴苣霜霉病的推荐药剂。1%申嗪霉素悬浮剂、80%代森锰锌可湿性粉剂、30%吡唑醚菌酯水乳剂3种药剂在试验过程中表现出较好的防治效果，可作为田间防治莴苣霜霉病的推荐使用药剂，667 m2推荐剂量分别为80～120 g、150～250 g、14～22 g。

英文摘要:

Abstract: In order to recommend preventive fungicides of high efficiency, low toxicity and low residue for control the occurrence of lettuce downy mildew, four fungicides, including 1% schizandromycin suspension, 30% pyraclostrobin aqueous emulsion, 20% cymoxanil suspension and 80% mancozeb wettable powder, were selected to carry out field efficacy tests for the prevention and control of lettuce downy mildew. The results showed that the control effect of 20% cymoxanil suspension was lower, and it was not recommended as a pesticide for controlling lettuce downy mildew in the field. 1% schizandromycin suspension, 80% mancozeb wettable powder and 30% pyraclostrobin aqueous emulsion had better control effect in the test and could be used as the recommended fungicides for the fi eld control of lettuce downy mildew. The recommended dosages per 667 m2 were 80-120 g、150-250 g、 14-22 g, respectively.

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