每年的冬春两季气温较低 ,在果树的管理上必须注意防御冻害 ,其方法大致有三种 :一、物理法在冬春季节对果树直接进行包裹等防御冻害的方法 ,其效果较为显著 ,但若果园面积较大 ,则费工时。目前采用的物理法有 :（１）在果树行间覆盖作物秸秆、树叶等 ,既可保墒 ,又能提高果园 The winter and spring each year the temperature is low, in the management of fruit trees must pay attention to the prevention of frost damage, there are three general methods: First, the physical method in winter and spring fruit trees directly wrapped and other frost damage prevention methods, the effect is more significant, However, if the orchard area is larger, then the working hours. The current physical methods used are: (1) cover the crop straw, leaves, etc. between the rows of trees, both soil moisture, but also improve the orchard