近年来,随着农村土地开发利用的发展,沙区国营林场和治沙站的造林地条件愈来愈差,有些已经只剩下不规则的高大流动沙丘及半流动沙地了.在这些地方造林相当困难,有的幼林被沙埋,有的又被风沙连根吹出来.尽管各地都采取了一定的固沙措施,但效果仍 In recent years, with the development of rural land development and utilization, the conditions of afforestation in the state-owned forest farms and sand control stations in the sand areas have been getting worse and worse, and some have left only irregular high-flow sand dunes and semi-mobile sandy land. Afforestation is quite difficult, and some young trees are buried in the sand, and some are blown out by sandstorms. Although some measures have been taken to stabilize the sand everywhere,