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前言在水土保持工作中造林是其中极重要的一环,特别是陕甘晋等省的黄河流域水土流失严重区域及风沙区域,开展水土保持工作,在因地制宜的原则下,植树造林大量供应群众树苗已是当前开展水土保持工作极需解决的问题,小叶杨和早柳是适于陇东地区生长和群众乐于栽植的树种,但在西北地
Foreword Afforestation in soil and water conservation work is an extremely important part, especially in serious soil erosion areas and sand blown areas in Shaanxi and Gansu provinces such as the Yellow River Basin. Soil and water conservation work is carried out in accordance with local conditions, afforestation afforestedly supplies large quantities of saplings It is a problem that needs to be solved nowadays to carry out soil and water conservation work. Populus simonii and early willow are tree species that are suitable for the growth of Longdong area and the masses are willing to plant them. However,