1序言在沙漠和沙漠化地区，由于天然降水和灌溉水不足，加之高温、干燥、强日照、温差大，常常对植物生长道成很大损害。为了促进干旱地区的绿化工作，人们只有培育、选择、引进适应性强的树种，以及创造良好的水分条件，笔者认为目前比较有效的途径是充分利用天然降水和节水灌 1 Introduction In deserts and desertification areas, the lack of natural precipitation and irrigation water, combined with high temperature, dryness, strong sunlight and large temperature differences, often cause great damage to plant growth. In order to promote greening work in arid areas, people only cultivate, select, introduce adaptive tree species, and create good water conditions, I believe that the current more effective way is to make full use of natural precipitation and water-saving irrigation