清华洞林场云南松母树林子代展示林初报

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于代展示林，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55．06％，地径的实际增益分别为-5．60％、28．71％和22．38％。

Preliminary Report on Progeny Demonstration Forests of Seed Production Stand of Pinus yunnanensis on Qinhuadong Forest Farm

Comparing experiment of progeny demonstration forest of seeds horn seed production stand of Pinus yunnanensis constructed by Ministry and Province in Bashan Forest Farm, Guyong Forest Farm and Baimahe Forest Farm with that of seeds from local and whole Province was carded out in Qinghuadong Forest Farm of Xangyun County in Yunnan. After observation and analysis on young forest of 6 years, the results show that the seed production stand forest of Pinus yunnanensis has relatively great genetic increment. The height increment of seed production stands in Baoshan Forest Farm, Guyong Forest Farm and Baimahe Forest Farm are 33.71%, 89.S9%, and 55.06% respectively, and those of ground diameter increment are -5.60%, 28.71%, 22.38% respectively.