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对杉木初级种子园17个优树自由授粉子代的测定表明,优树子代间在苗期和幼林期存在着显著的生长差异.造林3年时,庆元10、遂昌1、三明74—55、桐庐104个子代高生长显著高于当地优良林分子代(对照),可获得8.69%的平均遗传增益.并反映出湘、闽中心产区优树子代一般优于本省子代,本省优树子代经度愈西,纬度愈南,生长愈佳的地理效应趋势.
The results of free pollination progeny of 17 excellent trees in Chinese fir primary seed orchard indicated that there was a significant difference in growth between seedlings and young plants in the seedlings of Gossypium barbadense. After 3 years of afforestation, Qingyuan 10, Suichang 1 and Sanming 74 -55 and Tonglu 104 were significantly higher than those of the local elite stands (control), with an average genetic gain of 8.69%, which indicated that elite tree progenies in the producing areas of Hunan and Fujian were generally better than their progeny in this province, The province superior tree on behalf of the more longitude west, latitude more south, the better growing trend of geographical effect.