旱柳(SaliX matsudana Koidz.)是陕北沙区的主要造林树种,在防风固沙、改变自然面貌方面起着巨大作用,定边风沙地区旱柳林面积约占全部造林面积的一半以上。但由于沙区条件恶劣,除土层深厚、条件较好处柳树长势良好,可以成材外,沙地上不少柳树发生桔梢,生长不良,甚至死亡。例如定边长茂滩林场枯梢柳林占该场全 Salix (Salix matsudana Koidz.), A major afforestation species in sandy area of ​​northern Shaanxi, plays an important role in windbreak and sand fixation and in changing natural appearance. The area of ​​dry willow forest in Dingbian sandy area accounts for more than half of the total afforestation area. However, due to poor conditions in the sand area, in addition to deep soil conditions, better conditions Willow growing well, you can get the material, many sand willow orange shoots, poor growth and even death. For example, Dingbian Chang Mao Beach Lin Shu Lin Shuping accounted for the whole field