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[目的]筛选防除向日葵田杂草效果好且安全性好的药剂。[方法]用17.5%的草除灵.精喹EC、安心、奈安、8.8%的精喹禾灵EC设计7个处理防除向日葵田杂草,调查植株受害率、株防效和鲜重防效。[结果]各处理不同程度地产生药害,向日葵幼嫩的叶片皱缩畸形。8.8%的精喹禾灵EC处理受害率最低,其次是处理①,药后10 d的平均受害率分别为2.24%、9.94%,且平均受害率呈下降趋势。药后30 d处理⑤的株防效最好,其次是处理①,相差3.1百分点,处理①的鲜重防效最好,其次是处理⑤,鲜重防效分别为92.95%、90.14%。17.5%的草除灵.精喹EC与除草剂解毒剂安心、奈安混用不能增强对向日葵的安全性。[结论]从除草效果和安全性的角度,宜选用17.5%的草除灵.精喹EC;从安全性的角度,宜选用8.8%的精喹禾灵EC。
[Objective] The aim of this study was to screen out the best weed control and safe safety in sunflower field. [Method] Weed with 17.5% of the grass Ling Jing EC, peace of mind, Nairn, 8.8% of quizalofop-p-ethyl EC design seven treatment weed control sunflower fields, investigation of plant damage rate, strain control and fresh weight effect. [Result] The phytotoxicity was produced in different degrees in each treatment, and the young leaf folds deformity of sunflower was observed. 8.8% of the quizalofop-p-ethyl EC treatment had the lowest damage rate, followed by the treatment of ①, the average damage rate of 10 days after the treatment was 2.24% and 9.94% respectively, and the average victimization rate showed a decreasing trend. The control effect of strain ⑤ on the 30th day after treatment was the best, followed by treatment ①, a difference of 3.1 percentage points. The fresh weight of treatment ① was the best, followed by that of treatment ⑤, the fresh weight and anti-efficacy were 92.95% and 90.14% respectively. 17.5% Herbicide. Quench EC and Herbicide Antidote Reliable, nesafun mixture can not enhance the safety of sunflower. [Conclusion] From the perspective of herbicidal effect and safety, we should choose 17.5% of the grass Ling Qu Jing Qu EC; from the safety point of view, should use 8.8% of quizalofop-p-ethyl.