[目的]对20%唑菌酯悬浮剂配方中的助剂体系进行筛选和优化,充分发挥唑菌酯对作物病害的防治潜力。[结果]获得的最优配方:唑菌酯20%,NNO 3%,JH 2%,0201B 2%,T-80 1%,黄原胶0.2%,白炭黑2%,乙二醇5%,消泡剂1522 0.5%,蒸馏水补足至100%。[结论]室内生物活性试验结果表明:20%唑菌酯SC对黄瓜炭疽病具有良好的防治效果,在质量浓度20 mg a.i./L防效可达92.59%,与原药相比生物活性得到了进一步提高。 [Objective] The research aimed to select and optimize the adjuvant system in 20% pyraclostrobin suspension formulation and give full play to the potential of pyraclostrobin against crop diseases. [Result] The optimal formulation was obtained: 20% of pyraclostrobin, 3% of NNO, 2% of JH, 2% of 0201B, 1% of T-80, 0.2% of xanthan gum, 2% of silica, 5% of ethylene glycol, , Defoamer 1522 0.5%, distilled water make up to 100%. [Conclusion] The results of laboratory bioassay showed that 20% pyraclostrobin SC had good control effect on cucumber anthracnose. The antifungal activity of 20 mg ai / L was 92.59% Further improve.