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对向日葵田杂草进行调查并试用除草剂除草。结果表明禾本科杂草占杂草总数的74%;播后苗前施药,64%踏青和50%乙草胺除草效果分别为96.9%和85.9%,对向日葵安全;苗后施药,5%精喹禾灵、12.5%拿扑净和15%精稳杀得对禾本科杂草防效达95%以上,但对阔叶杂草防效很低,对向日葵安全。
Investigate weeds in sunflower fields and try herbicide weed control. The results showed that weeds accounted for 74% of the total number of weeds; after sowing pre-emergence spraying, 64% outing and 50% acetochlor weeding effects were 96.9% and 85.9%, sunflower safety; % Quizalofop-p-ethyl, 12.5% net take the net and 15% fine kill grass Po weed control effect of more than 95%, but broadleaf weed control effect is very low, safe for sunflowers.