一、在有地表水资源的条件下,通过灌溉系统的改造,建立节水型林地灌溉系统,改变传统的林地大水漫灌形式,以节约水资源扩大灌溉面积。例如,通过渗灌、滴灌、微灌、膜灌、定点浇灌等节水形式把水直接输送到林木根系区,定量控制总水量和灌溉时间分配,防止过多水分的渗漏、蒸发等损失。这种方法目前在人工育苗和经济林中已推广应用。二、在无地表水资源的情况下,可以 First, under the condition of surface water resources, through the reformation of the irrigation system, establish a water-saving forest irrigation system and change the traditional form of flood irrigation in forest land to save water resources and expand irrigation area. For example, the water can be directly delivered to the root zone of forest trees through irrigation, drip irrigation, micro-irrigation, membrane irrigation, and fixed-point irrigation and the like, and the distribution of total water and irrigation time can be controlled quantitatively to prevent excessive water leakage and evaporation. This method is currently used in artificial breeding and economic forest. Second, in the absence of surface water resources, you can