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[目的]水稻秆腐菌核病是苏打盐碱地水稻重要病害,为了筛选防治水稻秆腐菌核病有效杀菌剂对17种杀菌剂进行试验。[方法]利用生长速率法,对供试药剂建立毒力回归线,进行EC值分析。计算病情指数和防效并进行差异显著性分析。[结果]50%异菌脲WP、25%咪鲜胺(德国)EC和25%咪鲜胺EW防治效果明显,达到了80%以上;25%丙环唑EC达到70%。[结论]防治苏打盐碱地水稻秆腐菌核病首选50%异菌脲WP、25%咪鲜胺(德国)EC和25%咪鲜胺EW,25%丙环唑EC可以作为备选药剂。
[Objective] The research aimed to study the effects of sclerotinia sclerotiorum on rice germplasm in soda saline-alkali soils. In order to screen effective bactericides against scab pathogen in rice straw, 17 fungicides were tested. [Method] The growth rate method was used to establish the virulence regression line for the tested agents, and the EC value was analyzed. Calculate the disease index and control effect and make significant difference analysis. [Result] The control effect of 50% iprodione WP, 25% prochloraz (Germany) EC and 25% prochloraz EW was more than 80%, and that of 25% propiconazole EC was 70%. [Conclusion] The best 50% iprodione WP, 25% prochloraz (Germany) EC and 25% prochloraz EW and 25% propiconazole EC were the best candidates for the prevention and control of rice stem rot sclerotinia in soda saline-alkali soil.