在果树生产中,由于施肥量过大或过于集中,常使树体某些部位发生灼伤或者损害,造成肥害.为了避免肥害所带来的经济损失,现将生产中常见的几种肥害简介如下:1.有机肥肥害 有机肥未腐热施用或者施入比较集中,未与土掺匀,易发生肥害.有人在葡萄定植沟内施基肥时,每株施入未充分腐熟圈粪约25kg,且肥料成团成块,结果出现肥害症状.葡萄幼苗一开始长得很好,但当苗高20cm左右时,除蔓尖上的几个嫩叶外,其余叶片均出现焦边现象,受害严重的树,叶片脱落,扒开土层后发现肥块周围大部分须根死亡. In the fruit tree production, due to excessive or excessive concentration of fertilizer, some parts of the tree often cause burns or damage, resulting in fat .In order to avoid fat loss caused by the economic losses, now common in the production of several kinds of fertilizer Harm briefings are as follows: 1 organic fertilizer fat organic fertilizer is not rot or applied into the application of concentrated, not mixed with soil, prone to fatal fertilizer. Some people planted grapes in the grafting of base fertilizer, each plant is not fully decomposed Lap dung about 25kg, and the fertilizer into a group of clumps, the results appear fertilizer symptoms .Plus seedlings grow well at the beginning, but when the seedling height of about 20cm, except on the verge of several young leaves, the remaining leaves appear Focal edge phenomenon, serious damage to the tree, leaves off, after stripping the soil and found that most fat around the fibrous roots died.