西洋参在我国引种试栽发展很快,到1986年8月,全国种植面积已达到一定规模。主要分布在吉林、辽宁、黑龙江、陕西、山东与北京五省一市。关于西洋参在我国北方地区冬季防寒越冬的问题,许多参业科学工作者已做了大量工作,并取得了一定成果。目前,仍采用阔叶树的树叶、稻草、土等为防寒物,存在着所用防寒物多,用工量大,成本过高的弊病。为了寻求更好的防寒措施,我们开展了用树叶与农膜双覆盖西洋参的试验,不仅省工、节料,还可降低成本33.3％左右。 Introduction of Panax quinquefoliata in our trial planting developed rapidly, to August 1986, the national acreage has reached a certain scale. Mainly distributed in Jilin, Liaoning, Heilongjiang, Shaanxi, Shandong and Beijing five provinces and one city. As for the problem of American ginseng winter wintering in winter in northern China, many scientific workers in the field have done a great deal of work and have achieved certain results. At present, the use of leaves of broad-leaved trees, straw, soil and other cold-proof material, there are many cold-proof materials used, labor-intensive, costly shortcomings. In order to seek better cold-proof measures, we carried out the test of double covering American ginseng with leaves and plastic sheeting, which not only saved labor and material, but also reduced the cost by 33.3%.