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利用湿地松改良种子园的建园无性系生产的 8个全同胞家系和 2 0个自由授粉家系苗木共营建子代测定林 3块。 3～ 4年生的测定林数据分析结果表明 ,参试的自由授粉家系和全同胞家系的平均生长量显著地大于台山湿地松初级种子园的 ,2 0个自由授粉家系的树高、胸径、材积平均增益分别为 5.54 % ,7.77%和 2 3 .41 % ,初步实现了建园目标 ;同一无性系的不同采种年份的自由授粉子代生长存在着差异 ,有随着种子园母树年龄的增大而表现渐佳的趋势 ;改良园中还存在着少量的误选无性系 ,需要继续作测定和淘汰。从无性系亲子的生长量相关分析中发现 ,生长较差的自由授粉家系 ,较大部分产自生长量偏小的母本无性系。
Eight sibling families and 20 free-pollinated seedlings were used to produce 3 offspring of offspring grown in the orchard of Pinus elliottii Improved Seed Orchard. The results of measured forest data from 3 to 4 years showed that the average growth of free pollinated families and full sib families was significantly higher than that of 20 native pollen parents in the primary seed orchard of Taishan Slash Pine, The average gain was 5.54%, 7.77% and 23.41%, respectively. The goal of construction of the park was initially achieved. There were differences in the free pollination progenies of different seeding years of the same clones. As the age of the seed orchard increased, While the performance of getting better trend; improvement park there are still a small number of mistakenly selected clones, need to continue to measure and eliminate. From the clonal parent-child growth correlation analysis found that poor growth of free pollinating families, the greater part of the production from the growth of the smaller female clones.