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 m L/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 m L/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。
【英文摘要】
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 m L/L after sowing before herbicide was the best and safety to castor.Herbicide at the concentration of 20.8%sethoxydim-fomesafen EC 6 m L/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.
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