甜菜霜霉病的防效试验

Control Test of Beet Downy Mildew in Field

对3种高效低毒的杀菌剂（72％锰锌·霜脲、50％烯酰·吗啉和69％锰锌·烯酰可湿性粉剂）与常规药剂50％多菌灵及清水处理应用于甜菜霜霉病进行防效试验,3种高效低毒的杀菌剂防治效果达90％以上,可延长甜菜功能叶片生命力,增产15.1％～31.5％,效果明显.

Five treatments of three fungicides with high efficiency and low toxicity （72% carmazine-cymoxani WP, 50% dimethomorph WP, 69% carmazine-enoyl）, conventional fungicide 50% carbendazim WP and water were applied on sugarheet to control downy mildew disease. The results showed that control effect of the three fungicides with high efficiency and low toxicity was up to 90%, and growth leavesas well as root yield of sugarheeet were increased, the root yield increased by 15.1% - 31.5%.