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在大面积种植棉花和水稻的地区,常用二甲四氯防除水田杂草。但是棉花却对二甲四氯极为敏感,有些人不了解这个问题,用没有认真清洗喷过二甲四氯药液的喷雾器,给棉田喷药,致使棉花产生药害。对受害棉花可喷施腐植酸钠溶液消毒。将50％粒状腐植酸钠先对少量水煮沸溶解,然后再加水配成3000倍液,进行叶面喷施,每亩用药液量60公斤左右,要求喷洒均匀。喷药后,应再用同样方法将50％腐植酸钠配成500倍液,进行植株灌根,每亩用药液量250公斤左右、喷药、灌根后3—5天,叶片就能恢复组织功能,由白色转为浅绿色,大约1星期后,恢复正
In large areas where cotton and rice are planted, MCPA is commonly used to control weeds in paddy fields. However, cotton is extremely sensitive to MCPA. Some people do not understand this issue. They spray the cotton field with a sprayer that does not carefully spray the MCPA solution, resulting in injury to cotton. Damage to cotton can be sprayed sodium humic acid solution disinfection. 50% granular sodium humic acid first boiled a small amount of water to dissolve, and then add water to 3000 times the liquid, the foliar spray, the amount of liquid per acre 60 kg, requiring spraying evenly. After spraying, the same method should be used to 50% sodium humate formulated 500 times, the plants irrigated, the amount of liquid per acre about 250 kg, spraying, 3-5 days after irrigating, the leaves will be able to Recovery of organizational functions, from white to light green, about 1 week after the return to positive