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向日葵田杂草危害,严重影响其产量和品质,人工防除费工费时,而且劳动成本高,生产中没有理想的茎叶处理防除向日葵田一年生单双子叶杂草的药剂。2007年引进国外抗咪唑啉铜类除草剂向日葵品种——美洲虎,应用甲氧咪草烟·咪唑乙烟酸4.8%AS 66.7 m L/667m2~200 m L/667m2茎叶喷雾处理。施药后40 d调查,结果表明,该药剂对田间一年生单双子叶杂草综合株防效达88.1%~99.9%,其中83.3 m L/667m2、100 m L/667m2用药量处理对供试向日葵既安全,又具有较好防效。
Sunflower weeds harm, seriously affecting its yield and quality, labor-saving and time-consuming workers, and labor costs are high, there is no ideal production of stems and leaves in the sunflower field annual herbicide control dicotyledonous weeds. 2007 introduction of foreign anti-imidazoline copper herbicide sunflower varieties - Jaguar, imazapyr? Imazethapyr 4.8% AS 66.7 m L / 667m2 ~ 200 m L / 667m2 stems and leaves spray treatment. 40 d after application, the results showed that the pesticide had an effective control effect of 88.1% -99.9% on annual monocultaide and dicotyledonous weed, in which 83.3 m L / 667m2 and 100 m L / 667m2 were used to treat sunflower Safe, but also better control effect.