2,4—D酊酯是禾本科作物的田间除草剂。我县1985年用于麦田除草,收到了良好效果。但限于首次使用,人们对其残留危害认识不足,不少棉农又用喷过2,4—D酊酯的喷雾器由于未经冲洗或冲洗不净,就来防治棉蚜,致使棉花受到不同程度的危害。受害棉苗生长点被抑制,生长缓慢,叶片黑绿而无光 2,4-D tincture is a field herbicide of gramineous crops. Our county was used for wheat weeding in 1985 and received good results. But for the first time, people do not know enough about the harm of their residues. Many cotton farmers used cotton nebulizer sprayed with 2,4-D tincture ester to prevent and cure cotton aphid because they were not washed or rinsed. As a result, cotton was affected to varying degrees harm. Damage to cotton seedling growth point was inhibited, slow growth, dark green leaves without light