【摘要】 在干旱半干旱地区制约林木成活和生长的关健因子是水分条件。为了进一步提高植树造林成活率,促进造林幼树的长势,增强抵抗自然灾害的能力,通过采取对比试验示范,分析探讨液态地膜在榆林沙区及公路护坡中的作用效果,利用液态地膜的保水保墒、增温增肥等功能,来改善植物立地条件,提高苗木造林成活率、保存率。提出适合榆林沙区不同树种、不同立地条件下,液态地膜的最佳处理方法、使用技术。结果显示,在榆林沙区可以大面积推广液态地膜。更多还原

【Abstract】 Water condition is the key factor of restricting survive and growth of forest tree in arid and semi-arid area.In order to increase the survival rate of afforestation,to promote growth vigor of sapling,and also to enhance resistant ability for natural disaster,effect of liquid film on sandy area of Yulin and highway slope protection was analyzed through comparison tests.Site condition of plant was improved by using functions of liquid film,such as soil moisture cnonservation,increase of soil temperature and soil fertility.Survival and preserving rate of afforestion were increased.The optimal processing method and technology of liquid film which is suitable to different tree speceis and site conditions in Yulin sandy area were proposed.The result shows that liquid film is worth extending widely in Yulin sandy area.更多还原