吉林省参地水土保持及可持续利用

人参适宜在土层深厚 ,土壤肥沃的坡地上生长。种植人参采用皆伐林地、清除根茬、顺坡做床的方法 ,从栽培到收获的 6a时间内需换床 1次 ,参后地在 30～ 40a内不能重复利用 ,造成严重水土流失。其整地、晒地期由于土地失去了原有植被的保护 ;管理期间面积占参地 2 0 %～ 2 5 %的作业道要承受整个参地的降水量 ;参后弃地土质疏散、表土裸露 ,在这 3个不同阶段均需采取相应的水土保持措施 ,防止水土流失。

Soil and Water Conservation and Sustainable Use of Ginseng Land in Jilin Province

Ginseng is suitable to growing at deep layer and fertile soil. To plant ginseng, people generally adopt allcuting forestland and clearing away root stubble and longitudinal slope to made bed. From cultivation to harvest, it need change bed once in six years. After planting, ginseng land could not be used for 30～40years, it causes serious soil and water loss. At soil prepared and basked, the land lose the protection of v egetation; At management period, there have 20～25 percent ginseng land area' s production way bear all ginseng land's rainfall; discard land after plant ginseng, soil texture is porous and surface soil is uncovered. In the three different stage, appropriate soil and water conservation measures are taken to prevent and control soil and water loss.