黑龙江省农垦九三分局位于黑龙江省西部，属于春季多旱少雨，秋季降水集中的地区。由于九三地区的地貌多为丘陵漫岗，并且土壤每年都要遭受冻融的侵蚀，因此，水土流失比较严重。为了防止水土流失，九三地区采取了许多行之有效的工程措施和农业措施。其中田间防护林的密集营造 Ninety-three Bureau of Heilongjiang Province Reclamation located in the western Heilongjiang Province, belonging to more dry and rainy spring, fall precipitation concentrated areas. Due to the vast hills and hills in the Jiu-San area, soil erosion is affected by freeze-thaw every year. Therefore, soil erosion is more serious. In order to prevent water and soil erosion, many well-established engineering measures and agricultural measures were adopted in the Jiu San area. One of the dense shelter in the field to create