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[目的]为了明确60 g/L苯并双环酮SC在不同使用剂量的情况下,防除移栽稻杂草效果、杀草谱、安全性及施用技术等项指标,采用茎叶喷雾施药,定期调查的方法进行田间药效试验。[结果]苯并双环酮杀草谱主要包括莎草科杂草、阔叶杂草。施用时间为在水稻移栽后4~8叶期,推荐剂量为200~250 g a.i./hm2,施药后40 d对阔叶杂草、莎草科杂草株防效达85.1%~95.1%,与吡嘧磺隆联合使用时,防效更好。水稻移栽前使用丁草胺封闭,扩大杀草谱。[结论]正常使用量对水稻生长安全,与人工除草相比,产量差异不大。对阔叶杂草、莎草科杂草防效较好。
[Objective] The purpose of this study was to clarify the effects of 60 g / L benzobicycloketone SC on the control of transplanted rice weeds, herbicides, safety and application techniques under different applied doses. Regular investigation of the method of field efficacy trials. [Result] The benzalkonium chloride herbicidal spectrum mainly included Cyperaceae and broadleaf weeds. The application time was 4 ~ 8 leaf stage after transplanting rice, the recommended dose was 200 ~ 250 g ai / hm2, 40 d after the application of broadleaf weeds, sedge weeds control effect of 85.1% to 95.1% , When used in combination with pyrazosulfuron, better control. Butachlor was used to seal rice before transplanting and the herbicide spectrum was expanded. [Conclusion] The normal usage of rice was safer to grow than that of artificial weeding, and the difference was not significant. Broadleaf weeds, sedge weeds better control effect.