大棚黄瓜霜霉病田间药剂防治试验

摘要

为了有效防治保护地黄瓜霜霉病，合理用药，降低防控成本，提高防治效果，采用不同药剂量的50%烯酰吗啉可湿性粉剂及72%霜脲·锰锌可湿性粉剂进行防效试验。试验结果表明，使用50%烯酰吗啉可湿性粉剂375，300 g/hm2及72%霜脲·锰锌可湿性粉剂1458 g/hm2防治效果较好，防效分别达到74.32%，73.46%，74.07%，化学药剂防治同时要搞好预测预报及农业防治。%　　In order to control the cucumber downy mildew in greenhouse effectively, use fungicides rationally, reduce the cost of prevention and control, and improve the control effect, we conducted the control experiment by using 50%dimethomorph wettable powder (WP) and 72% cymoxanil+mancozeb WP with different dosages. The results showed that, the control efficiency were 74.32%, 73.46% and 74.07% respectively, when the dosages of 50% dimethomorph WP were 375 and 300 g/hm2 and the dosage of 72%cymoxanil+mancozeb WP were 1 458 g/hm2. Furthermore, the correct prediction and forecast and agricultural control were proposed at the same time.