论文部分内容阅读
在云南省祥云县清华洞林场采用保山林场、古永林场和白马河林场 3片部省合建的云南松母树林种子营建子代展示林 ,以全省和当地商品种造林作对照 ,对 6年生的幼林进行早期观测分析表明 :云南松母树林具有较高的实际增益 ,保山林场、古永林场和白马河林场母树林树高的实际增益分别为 33 71%、 89 89%和 5 5 0 6 % ,地径的实际增益分别为 :- 5 6 0 %、 2 8 71%和 2 2 38%。
In Qingyun Cave Forest Farm in Xiangyun County of Yunnan Province, the seedlings of the pine seedlings planted in the mountain of Baoshan Forest Farm, Yongyong Forest Farm and Baima River Forest Farm were set up to display the progeny of the offspring. Taking the afforestation of commercial varieties in the province and local area as reference, The results of early observation and analysis showed that the actual gain of Pinus yunnanensis forest in Yunnan was 33 71%, 89 89% and 656% respectively, and the actual gains of the tree stands in Baoshan, Yulin, , The actual gains of the ground diameters are: - 56.0%, 28.1% and 22.38% respectively.