皖西山区海拔高度对西洋参有效成分的影响

测定了皖西山区不同海拔高度西洋参成品参的折干率、总皂甙、总糖、还原糖及粗淀粉的含量，并分析了不同海拔高度上主要气象要素对各项值的影响。结果表明：折干率与山区实效积温的垂直变化呈正相关（R＝0．8373），在海拔600－900m之间，实效积温高，折干率较高；总皂甙含量与年日照时数的垂直变化呈正相关（R＝0．7352），在海拔600－850m范围内总皂甙含量较高，而在海拔850－1000m范围内含量较低，在1000m以上的岭头又回升较快：总糖与还原糖的含量均随海拔的升高而增加，且与生长季（4－9月）15cm地温的垂直变化呈负相关（R1＝－0．9870，R2＝－0．9628）；粗淀粉含量变化与生长季实效积温垂直变化呈正相关，在海拔600－850m之间，粗淀粉含量较高。

Influence of Altitudes onEffective Compositions of American Ginseng in Mountains of West Anhui

In this paper, the dry rate and content of total saponin, total sugar, reduced sugar and raw starch in American ginseng are determined. The effect of main climatic factors under different altitudes on them is also analyzed. The dry rate is higher in the range of altitudes from 600m to 900m and it is positively relevant to the effective accumulated temperature (R=0.8373). The content of total saponin is higher in the range of altitudes from 600m to 850m. While it is lower in the range of altitudes from 850 to 1000m and then rise suddenly above 1000m. It is positively relevant to sunshine duration (R=0.7352). The content of total sugar and reduced sugar rises with the altitude and they are negatively relevant to the temperature of 20 cm soil temperature in the growing season (R 1=-0.9870, R 2=-0.9628). The content of total starch is higher in the range of altitudes from 600m to 850m and it is positively relevant to the effective accumulated temperature.