试验证明,单透光棚比全荫棚人参增产47%。为此,我们于1982至1984年对两种荫棚的小气候状况和人参光合速率进行了对比观测,初步结果报告如下。方法单透光棚,畦向东南30°,前檐朝北;棚高(从畦面计算):前柱95厘米,后柱70厘米;棚宽180厘米,花帘透度为2.6厘米,中间夹无色 PVC 农膜;畦高30厘米,畦宽 Test proved that the single transparent shed than the whole shade ginseng yield 47%. To this end, we compared the microclimate status of two shade canopies and the photosynthetic rate of ginseng from 1982 to 1984, and the preliminary results are reported as follows. Method Single translucent shed, toward the southeast 30 °, the former eaves north; shed high (calculated from the hock): the front column 95 cm, the rear column 70 cm; shed width 180 cm, the curtain shade of 2.6 cm in the middle Folder colorless PVC plastic film; 畦 high 30 cm, 畦 wide