一、引言沙枣(Elaeagnus angustifolia L.)又名桂香柳,是西北地区防风固沙及盐碱地造林的重要树种之一,也是四旁绿化的很好树种。随着我国造林事业的蓬勃开展,沙枣防护林的营造面积逐年增加,有的已郁闭成林,且收到一定的防护效益。但近几年来,由于沙枣木蝨的危害,致使梢叶卷曲干枯,严重地影响其防风固沙效益。因此,及时地泊除虫害,实为改造利用沙漠不容忽视的重要问题。 I. Introduction Elaeagnus angustifolia L., also known as cinnamon, is one of the important tree species for windbreak and sand fixation and saline-alkali land afforestation in Northwest China. It is also a good tree species for greening on all sides. With the vigorous development of afforestation in our country, the construction area of ​​shelled pickles of Sassafras tsumu increased year by year, and some of them were closed to forests and received some protection benefits. However, in recent years, due to the hazards of Psidium pardus, causing tip curly dry, seriously affecting the windbreaks and sand benefits. Therefore, in a timely manner to pest elimination and deforestation, it is actually an important issue that can not be ignored in rebuilding and using the desert.