果树综合管理中，施肥是丰产的基础，植保是优质的保证。然而有些果农因用肥用药不当，果树肥害及药害时有发生，轻者灼伤根系及叶片果实，重者绝收，甚至死亡。在生产实践中，造成果树肥害的原因大致有以下几种情况：一是在土壤施肥时，肥料过于集中或肥块太大，施后又没有浇 Integrated management of fruit trees, fertilization is the basis for high yield, plant protection is a guarantee of quality. However, some farmers due to improper use of fertilizer, fruit tree fat injury and injury occurred from time to time, the light burns roots and leaves of fruit, and even the worst, and even death. In production practice, the causes of fruit trees fat roughly the following situations: First, fertilization in the soil, the fertilizer is too concentrated or fat block is too large, after the application did not pour