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一、72%2.4—D丁酯乳油。播后苗前每亩用50-100毫升,对水喷雾。玉米苗后4-5叶期,杂草基本出齐后,每亩用40-60毫升,对水50-60公斤喷雾。有些玉米自交系品种对2,4-D丁酯敏感,因此应先试验后使用。二、20%2甲4氯水剂。玉米苗后4-6叶期,每亩用175-350毫升对水喷雾,可防除一年生阔叶杂草和莎草科杂草。三、48%百草敌水剂。播后苗前,每亩用30毫升对水喷雾。玉米苗后3-6叶期,每亩用25-30毫升对水喷雾。玉米株高90厘米或玉米开始抽雄时,对百草敌敏感,不能再施药。
A, 72% 2.4-D butyl ester EC. After sowing before the Miao with 50-100 ml, spray on the water. 4-5 leaf stage after the emergence of corn, weeds basic alignment, with 40-60 ml per acre, spray 50-60 kg of water. Some maize inbred lines are sensitive to 2,4-D butylate and should be used after testing. Second, 20% 2 A 4 chlorine agent. 4-6 leaf stage corn seedlings, with 175-350 ml per acre on the water spray, can control annual broadleaf weeds and sedge weeds. Third, 48% Herbicide. Seedlings before sowing, with 30 ml per acre on the water spray. Corn seedlings 3-6 leaf stage, with 25-30 ml per acre on the water spray. Corn plant height of 90 cm or corn began tasseling, the enemy of paraquat sensitive, can no longer apply drugs.