[目的]明确60g/L戊唑醇悬浮种衣剂对玉米丝黑穗病的防治效果和安全性,为其生产应用提供科学依据.[方法]设60 g/L戊唑醇悬浮种衣剂50、100、150 mL/100 kg种子,对照药剂2％立克莠湿拌种剂400 g/i00 kg种子及空白对照5个处理；采用土壤接种病菌以测定药剂的防治效果.[结果]60 g/L成唑醇悬浮种衣剂50～150 mL拌种100 kg,对玉米丝黑穗病的防治效果达57.03％～91.06％,玉米增产25.8％～44.4％,药后观察未见玉米苗出现药害现象.[结论]60 g/L戊唑醇悬浮种衣剂对玉米丝黑穗病有较好的防治效果,且对玉米安全,可作为防治玉米丝黑穗病的药剂在生产上推广应用,建议使用剂量为60g/L戊唑醇悬浮种衣剂100 mL/100 kg种子.%[Objective]The present experiment was conducted to study the control effect and safety of tebuconazole flowable seed coating agent (60 g/L) on maize head smut in order to enhance maize production. [Method]Five treatments, viz., 50, 100, 150 mL tebuconazole flowable seed coating agent (60 g/L) coated per 100 kg seed , contrast medicament 2% Likexiu wetable seed agent(400 g/100 kg seed)and blank control were used in the experiment. The pathogen of maize head smut was inoculated to soil and the control effects of different treatments were recorded. [ Result ]The control effect of 50-150 mL tebuconazole flowable seed coating agent ranged from 57.03 to 91.06%, the yield of maize increased by 25.8-44.4%, and its application did not showed any toxicity symptoms on maize seedlings. [Conclusion]The result showed 60 g/L of tebuconazole flowable seed coating agent had good control effect and it was safe to maize, and it may be applied in commercial production @ 100 mL/100 kg seed for sustaining maize production.
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