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１９８５～１９８７年三年间测得人参叶片比叶重的变化范围在１６５～４４０ｍｇ／ｄｍ２之间。一年生和四年生人参叶片比叶重较高，三年生和六年生人参叶片比对重较低。人参叶片比叶重受生长期间光照条件的影响，随着荫棚透光率的增加，人参叶片比时重增加。当荫棚透光率超过４５％时，比叶重呈下降变化。人参叶片比叶重在整个生长季节呈双峰曲线变化，高峰出现在６月下旬和８月上旬。弱光下人参叶片比叶重的季节性变化不明显。
From 1985 to 1987 three years measured ginseng leaf specific leaf weight range of 165 ~ 440mg / dm2. The annual leaves and four-year-old ginseng leaf specific leaf weight is higher, three-year-old and six-year-old ginseng leaves than the low weight. The ginseng leaf specific leaf weight was affected by the light conditions during the growth period. With the increase of the light transmittance of the ginkgo tree, the ginseng leaf weight was increased with time. When the shade shed more than 45% light transmittance, the specific leaf weight decreased. Ginseng leaf specific leaf weight throughout the growing season showed a bimodal curve changes, the peak appeared in late June and early August. The seasonal changes of specific leaf weight of ginseng leaves under low light were not obvious.