1984年5月,湖南省邵阳地区园艺场东风生产队一名职工,从畜产品加工厂购回一批加工后剩下的残渣废毛下脚料,没有经过处理就直接施在自己承包的30多株温州蜜柑结果幼树的根颈部处。施后第三天,叶片开始枯水卷缩,经浇水抢救无效,于 In May 1984, an employee from Dongfeng Production Team of Horticultural Field in Shaoyang, Hunan Province repurchased a batch of residual waste wool waste left after processing from the livestock product processing factory and applied it directly to more than 30 contractors without processing Plant Wenzhou Satsuma results young tree root at the neck. On the third day after application, the leaves began to scorch, which was invalid after watering