46%敌稗·丁草胺·异[口恶]草松EC防除水稻直播田一年生杂草药效  

Effectiveness of propanil¡¤butachlor¡¤clomazone 46%EC in controlling annual weeds in direct-seeded rice fields

作　　者：曹琛[1] CAO Chen(Anhui Fengle Agrochemical Co.,Ltd.,Hefei 230036,China)

机构地区：[1]安徽丰乐农化有限责任公司,合肥230036

出　　处：《世界农药》2025年第4期53-57,共5页World Pesticide

摘　　要：采用田间小区试验方法,开展了46%敌稗·丁草胺·异[口恶]草松乳油(EC)对水稻直播田杂草防除效果及应用技术的试验。分别设置5个不同剂量处理组1380、1725、2070、3450 m L/hm^(2),以及空白对照组进行茎叶喷雾处理。结果表明,药后30 d,46%敌稗·丁草胺·异草松EC 1380~2070 m L/hm^(2)处理对杂草的株数防效和鲜重防效分别为989.47%~92.52%和92.51%~94.78%。建议46%敌稗·丁草胺·异[口恶]草松EC以推荐用量1380~2070 m L/hm^(2)于水稻2叶1心至3叶1心,稗草、千金子3叶1心之前施药,可有效控制杂草的发生,且对作物安全。The field plot test method was used to test the control efficacy and application technology of propanil·butachlor·clomazone 46%EC on weeds in direct-seeded rice fields.Five different dosage treatment groups of 1380,1725,2070 and 3450 mL/ha and a blank control group were set up for stem and leaf spraying.The results showed that 30 days after the application,the control efficacy of propanil·butachlor·clomazone 46%EC 1380-2070 mL/ha on the number of weeds and the control efficacy on fresh weight were 989.47%-92.52%and 92.51%-94.78%,respectively.It is recommended to apply propanil·butachlor·clomazone 46%EC at the recommended dosage of 1380-2070 mL/ha to rice when the rice is at the 2-leaf-1-heart to 3-leaf-1-heart stage and before Echinochloa crus-galli(L.)P.Beauv.and Leptochloa chinensis(L.)Nees reach the 3-leaf-1-heart stage.This can effectively control the occurrence of weeds and is safe for crops.

关 键 词：敌稗 丁草胺 异[口恶]草松 乳油 一年生禾本科杂草 直播水稻 防效 

分 类 号：S482.4[农业科学—农药学]