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四旁植树造林,是平原农区林业生产中重要组成部分,它是特定的社会经济、自然地理条件下形成的森林群落。经营好四旁树木,对增加森林覆被率,提高木材产量,改善小气候,增加农民家庭收入均具有显著的作用。但由于四旁树木分散在千家万户经营,栽培技术和管理水平相差悬殊。所以四旁树木在经营管理上有很多问题急待解决,尤其是更新改造问题更突出。
Afforestation on four sides is an important part of forestry production in the plain farming areas. It is a forest community formed under specific socio-economic and natural geographical conditions. Operating well-lined trees has a significant role in increasing forest cover, increasing timber production, improving microclimates and increasing peasant household income. However, due to scattered trees in thousands of households operating, cultivation techniques and management vary widely. Therefore, many trees in operation and management have many problems to be solved urgently, especially the problems of renovation and improvement are more prominent.