17种杀菌剂对香蕉叶斑病的防治效果评价

以防效和成本为依据，综合评价17种药剂防治香蕉叶斑病的优劣。结果表明，25%苯醚甲环唑乳油防效较好，且药剂成本最低，可在生产上作为常用常规药剂使用；37%苯醚甲环唑水分散颗粒剂防效最优，其成本中等，也可在生产上使用；40%丙环唑水乳剂防效防效虽然比较突出，但其成本较高，可作为生产上应急药剂，25%戊唑醇水乳剂成本低，防效较差；25%苯醚甲环唑?咪鲜胺SC 防效差，成本中等，50%丙环唑乳油防效一般，但成本高，从经济效益角度上考虑，可不推荐使用，从延缓病害的抗药性来看，又可与其他药剂轮换使用。300 g/L苯甲?丙环唑乳油、25%丙环唑乳油、32%腈菌?锰锌WP和70%氟环唑水分散粒剂等药剂对香蕉叶斑病的防效相近，应从价格方面选择药剂，即顺序为70%氟环唑水分散粒剂>32%腈菌?锰锌WP>25%丙环唑乳油>300 g/L苯甲?丙环唑乳油。采用20%苯醚甲环唑微乳剂、12.5%氟环唑悬浮剂、25%戊唑醇乳油、250 g/L丙环唑乳油、250 g/L苯醚甲环唑乳油和6%戊唑醇微乳剂这几种药剂防治香蕉叶斑病时，应优先选择250 g/L苯醚甲环唑乳油，25%戊唑醇乳油次之，其次20%苯醚甲环唑微乳剂，再次6%戊唑醇微乳剂，250 g/L丙环唑乳油，最后是12.5%氟环唑悬浮剂。根据上述药效测定、防效和价格比较结果，提出药剂选择建议，供农户科学合理选用香蕉叶斑病防治药剂参考。

Evaluation of Banana Leaf Spot Disease Treatment of 17 Fungicides

The authors comprehensively evaluated 17 fungicides varieties by comparing the efficacy and the cost on banana leaf spot disease. The results showed that 25% difenoconazole EC had better efficiency and lower cost than other fungicides. It could be commonly used as conventional fungicides in the production. The effect of 37% difenoconazole water dispersible granule was optimal, and the cost was medium, which also could be used as conventional fungicides. 40% propiconazole EW can be used for emergency situation which had better efficacy but high cost. 25% tebuconazole aqueous emulsion and 50% propiconazole EC had poor control efficiency and moderate cost, they were not recommended to cure the banana leaf spot disease from economic respect, but they could be used as rotation fungicides in delaying disease resistance. The efficacy of 300 g/L benzoic·propiconazole EC, 25% EC propiconazole, 32% myclobutanil·MZ WP and 70% water dispersible granule epoxiconazole pharmaceutical agents for banana leaf spot were similar. The price of these fungicides from low to high was: 70% epoxiconazole WDG, 32% myclobutanil·MZ WP, 25% propiconazole EC, 300 g/L benzoic·propiconazole EC. Among 20% difenoconazole yl microemulsions, 12.5% epoxiconazole suspensions, 25% tebuconazole EC, 250 g/L EC propiconazole, 250 g/L difenoconazole EC and 6% micro tebuconazole, for controlling the banana leaf spot disease, the proper selecting order was: 250 g/L difenoconazole EC, 25% tebuconazole yl EC, 20% difenoconazole azole microemulsion and 6% tebuconazole microemulsions, 250 g/L propiconazole EC, and 12.5% epoxiconazole suspension. According to the above efficacy measurement and the comparison of control efficiency and price of treatments, we provided farmers with reasonable proposals for scientific treatment of black leaf spot disease.