果树的肥害,一般是指因施肥不当,而使树体某些部位灼伤,或者是损害。生产中常见的肥害有下列三种:一是根外追肥时,肥液浓度太高,致使叶片焦灼,干枯。二是过多、过量或过于集中使用化学肥料(如尿素等)。三是土壤施肥时,由于肥料集中或肥块大,施肥后没有及时浇水,造成根系烧伤。 Fruit tree fat, generally refers to improper fertilization, leaving parts of the tree burns, or damage. Common fattening in production has the following three kinds: First, top dressing, fertilizer concentration is too high, causing the leaves anxious, dry. Second, excessive, excessive or too concentrated use of chemical fertilizers (such as urea, etc.). Third, soil fertilization, due to fertilizer concentrated or fat block, not timely after watering, resulting in root burns.