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烟嘧磺隆除草剂是目前国内较成熟的玉米田苗后除草剂,因成本低、杀草彻底、选择性强,备受农民朋友的喜爱,但其施用技术要求高,每年出现的药害也很多,农民一定要科学施用烟嘧磺隆。烟嘧磺隆属内吸性除草剂,可被杂草茎叶和根部吸收,随后在植物体内传导,造成敏感植物生长停滞、茎叶褪绿、逐渐枯死,一般情况下7天左右杂草初现中毒症状,15天左右死亡,大草死亡时间会更长。在杂草4叶期前后施药药效好,对大草需要增加药量。烟嘧磺隆
Nicosulfuron herbicide is currently the more mature maize field post-emergence herbicide, due to low cost, thorough herbicide, strong selectivity, much loved by farmers and friends, but its application of high technical requirements, the annual phytotoxicity Many, farmers must be scientific application nicosulfuron. Nicosulfuron is a systemic herbicide that can be weed stems and leaves and roots absorb, and then conduction in plants, causing the growth of sensitive plants stagnation, stems and leaves chlorotic, gradually withered, under normal circumstances about weeds Now poisoning symptoms, about 15 days of death, the death of the big grass will be longer. Pharmacodynamics are good before and after the 4-leaf stage of weeds, and it is necessary to increase the dosage for the big grass. Nicosulfuron