云南马龙不同云南松母树林子代林试验初报

A Preliminary Report on Progeny Forest Experiment of Different Seed Production Stand of Pinus yunnanensis in Malong County,Yunnan Province

在云南省马龙县采用白马河林场、古永林场和保山林场 3地部省合建的云南松母树林的种子营建子代林 ,以全省和当地商品种造林作对照 ,对 5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 ,白马河林场、古永林场和保山林场的云南松母树林子代林树高的实际增益分别为 49 85 % ,- 1 3 6 2 % ,1 1 35 % ,地径的实际增益分别为 46 0 1 % ,36 97% ,42 0 2 %

Taking 3 kinds of seeds from seed production stand of Pinus yunnanensis constructed by the Ministry and Province on Baimahe Forest Farm,Guyong Forest Farm and Baoshan Forest Farm as test units and installing 2 commondity seeds of Malong and the other parts of the whole Province as control,the comparing experiment on progeny test of progeny forest in Northeast of Yunnan has been done.After observation and analysis on the young forest of 5 years,the results show that the seed production stand of Pinus yunnanensis has relatively great genetic realized gain.The height realized gain of seed production stands on Baimahe Forest Farm,Guyong Forest Farm and Baoshan Forest Farm are 49 85%, -12.62% and 11 35%,and those of ground diameter realized gain are 46.01%,36.97% and 42 02%respectively.