通辽地区蓖麻田除草剂筛选研究

摘要

Chemical herbicides screening test in castor after sowing and before seedling was carried out.The results showed that control effect at the concentration of 50%acetochlor EC 10 mL/L after sowing before herbicide was the best and safety to castor.Herbicide at the concentration of 20.8%sethoxydim-fomesafen EC 6 mL/L in seedling stage had good control effect on weeds.10%oxyfluorfen had mild injury on castor leaves,and could return to normal in later stage.%在蓖麻播后苗前和幼苗期进行化学除草剂筛选试验，结果表明：播后苗前除草剂以浓度为10 mL/L的50%乙草胺乳油防效最佳，对蓖麻安全；苗期除草剂以浓度为6 mL/L的20.8%烯禾氟磺胺乳油对杂草有较好的防治效果。10%乙氧氟草醚对蓖麻叶片产生轻度药害，后期可恢复。