银杏药用林基地造林效果分析

Analysis of Effect of Planting Ginkgo biloba in Its Medical Forests Base

银杏是一种具有良好保健功效的药食两用植物,尤其是银杏提取物(EGB)广泛应用于医药和食品行业。对银杏药用林基地造林效果进行综合评价。结果表明:在相同的立地条件下,不同经营水平的银杏造林保存率、幼林生长均有明显差异。Ⅰ级立地:集约经营的幼林平均高、平均胸径比粗放经营增长21%和48.4%;Ⅱ级立地集约经营增长64.7%和62.5%;Ⅲ级立地采取集约经营的幼林平均高比一般经营的增长13.3%,平均胸径增长15.4%。基地造林的总体效果:采用优良品种的嫁接苗(30cm左右)上山造林后采取集约经营银杏生长恢复快,平均成活率可达95%以上;不同经营对象营造的银杏林,凡是采取集约管理的,幼林生长良好。生长好的占48.5%(幼林树高年均生长0.6m以上),生长中等的占37.1%(树高年生长0.4m以上),生长差的占14.4%(树高年生长0.4m以下)。

Ginkgo biloba is a kind of medical and edible plants with good healthful effect. Especially, EGB from Ginkgo biloba is widely used in medicine and food industry. The planting effect of its medical forests is valued synthetically in order to provide experiences of Ginkgo biloba. The results show that under the same site condition there are distinct differences among the planting livability and sapling growth of Ginkgo biloba in difference management level. In the fast-degree site condition, the mean height and DBH of the sapling forests under intensive management increased by 21% and 48.4% compared with under extensive management, respectively. In the second-degree site condition, 64.7% and 62.5%, respectively. In the third-degree site condition, 13.3% and 15.4%, respectively. The general effect of planting in base is as follows. The mean survival rate of Ginkgo biloba＇s grafted saplings of good varieties can reach more than 95% under intensive management after planting on hills. And the saplings grow well, among which the saplings more than 0.rm of annual mean height growth can account for 48.5%; the saplings more than 0.4m of annual mean height growth can account for 37.1%; less than 0.4m, 14.4%.