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1989年在辽宁省昌图县进行白僵菌制剂不同剂型防治亚洲玉米螟试验。大区试验结果表明:在亩施菌量相等条件下,用可湿性粉剂喷雾,粉剂喷粉和手撒颗粒剂防治效果差异不显著。用2.5×10~4亿孢子/亩剂量,在玉米心叶期防治一次,玉米螟幼虫可减少90.5～91.6％。用同上剂量和剂型,在两个乡镇1.2万亩玉米上大面积防治示范,三种施药方法玉米螟话虫数分别减少86.9％、80.7％和78.5％。其中可湿性粉剂喷雾防治效果和防治工效均较高,防治费用较低,无粉尘污染,菌剂便于运输及贮存,且适合于超低量喷雾,有推广和发展前景。
In 1989 in Changtu County, Liaoning Province Beauvolent preparations of different formulations of Asian corn borer test. The results of large area test showed that under the condition of the same amount of Mushi bacteria spraying, the effect of spraying with wettable powder, powder dusting and hand-spreading granule was not significant. With 2.5 × 10-40000000 spores / mu dose, once in the control of corn leaf stage, corn borer larvae can reduce 90.5 ~ 91.6%. With the same dosages and dosage forms, large-scale prevention and control demonstration on 12,000 hectares of corn in two towns and townships showed that the number of Ostrinia furnacalis decreased by 86.9%, 80.7% and 78.5% respectively. The wettable powder spray control effect and prevention and treatment efficiency are higher, prevention and control costs are low, no dust pollution, bacterial agents for transport and storage, and suitable for ultra-low volume spray, there is the promotion and development prospects.