不同杀菌剂对黄瓜种子多主棒孢霉菌的抑菌效果和田间防效

摘要

Objective] To screen the fungicide suitable for C.cassiicola of cucumber seeds.[ Method] 3 kinds of fungicides were selected to set up 15 concentration gradients, and the best fungicide variety and concentration were screened out through the indoor inhibition test, and then the control effect of each fungicide was evaluated through field experiments.[Result] The inhibitory effects of 300, 400 and 500 times of diluents from 75% chlorothalonil WP to cucumber C.cassiicola were the best.In the field experiments, 55 ℃ of hot water soaking seed for 30 min and 500 times of diluent from 75% chlorothalonil WP (mass concentration of 1 500.00 mg/L) had the best effect control.[Conclusion] Seed processing method with the best field control effect was determined, which could provide effective technical measures for integrated con-trol of cucumber Corynespora leaf spot.%[目的]筛选出适宜黄瓜种子多主棒孢霉菌的防治药剂。[方法]选取3种药剂，设置15个浓度梯度，通过室内抑菌试验筛选抑菌效果最好的药剂品种和浓度，并评价各药剂的田间防治效果。[结果]75％百菌清WP 300、400、500倍稀释液对黄瓜种子多主棒孢霉菌的抑菌效果最好。田间防效最好的是55℃温汤浸种30 min、75％百菌清WP 500倍稀释液（质量浓度为1500．00 mg／L）的处理。[结论]确定了田间防效最好的种子处理方式，黄瓜棒孢叶斑病的综合防治提供了有效的技术措施。