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以5%特丁硫磷颗粒剂为对照,进行8%毒死蜱·杀螟单颗粒剂对甘蔗螟虫田间防治效果试验。结果显示,在甘蔗松蔸时施用8%毒死蜱.杀螟单颗粒剂2.0～3.0kg ai·ha-1,药后60、90d对甘蔗螟虫的防治效果均超过75%,与对照药剂5%特丁硫磷颗粒剂3.0kg ai·ha-1处理的防效相当,差异不显著。因此,生产中建议结合新植蔗播种、宿根蔗松蔸时使用8%毒死蜱.杀螟单颗粒剂防治甘蔗螟虫,推荐使用剂量为2.0～3.0kg ai·ha-1。
The control effect of 8% chlorpyrifos and silymarone on the control of sugarcane borers was tested with 5% terbutaline granules. The results showed that 8% chlorpyrifos was applied to the pineapple cane when the dosage was 2.0 ~ 3.0kg ai · ha-1, the control effect on sugarcane borers was over 75% at 60 and 90 days, The control effect of 3.0 kg ai · ha-1 of lethoside granules was not significant. Therefore, it is suggested to combine the planting of new sugarcane with 8% chlorpyrifos in the pests of Pinus massoniana during the production process, and to kill the sugarcane borer with the prophylaxis and treatment of sugarcane borers. The recommended dosage is 2.0-3.0 kg ai ha-1.