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[目的]研究戊唑醇和菌核净复配对油菜菌核病病原菌的增效作用,对防治油菜菌核病具有重要意义。[方法]采用室内生长速率法、复配制剂的活体组织法和温室盆栽法试验测定了戊唑醇和菌核净复配对油菜菌核病病原菌的增效作用。[结果]戊唑醇和菌核净以质量比为1∶20、5∶44、5∶26、10∶33、5∶11、15∶22、12∶11、20∶11和21∶5复配后对油菜菌核病病原菌具有增效作用,且当二者配比为12∶11时共毒系数最高,为154.7。将戊唑醇和菌核净以12∶11复配加工成可湿粉剂进行复配药剂的活体组织法试验时共毒因子为26.9,表现为增效作用;将复配制剂分别作为保护剂和治疗剂进行温室盆栽法试验时,共毒因子分别为28.0和36.4,表现为增效作用。戊唑醇和菌核净的质量比为12∶11时为最佳配比。
[Objective] The research aimed to study the synergistic effect of tebuconazole and sclerotinum on the pathogen of sclerotinia sclerotiorum and its significance for the prevention and treatment of sclerotinia sclerotiorum. [Method] The synergistic effects of tebuconazole and sclerotinic net composing on pathogenic bacteria of sclerotinia sclerotiorum were determined by indoor growth rate method, living tissue method with compounding agents and greenhouse pot experiment. [Result] Tebuconazole and sclerotium were compounded in the mass ratio of 1:20, 5:44, 5:26, 10:33, 5:11, 15:22, 12:11, 20:11 and 21:5 After the rape Sclerotinia pathogenic bacteria have synergistic effect, and when the ratio of the two was 12:11 when the highest coefficient of co-toxicity was 154.7. The tebuconazole and sclerotinic net at 12:11 complex processed into wettable powder agent complexed with the biotechnology test for co-factor was 26.9, showed a synergistic effect; the compound formulations as a protective agent and treatment Agents greenhouse pot experiment, the co-factor were 28.0 and 36.4, the performance of the synergistic effect. Tebuconazole and sclerotium net mass ratio of 12:11 is the best ratio.