其用途仅限于保持育种材料或建立无性系种子园。
Its use is limited to the preservation of breeding material or the establishment of clonal seed orchards.
本文是24年来开展云南松无性系种子园营建技术及其有关方面研究的总结。
This paper is the summary of research on establishment techniques and relevant aspects of Pinus yunnanensis clonal seed orchard which have been done for 24 years.
通过高产脂马尾松初级种子园产脂力测定，结果表明：14个3重复和19个2重复无性系间的差异都达到极显著性水平。
The results showed that the differences among 14 3-replication clones and 19 2-replication ones all reached the extremely significant level.
杉木种子园无性系结实稳定性是高产稳产的重要因素。
Seed stability of clone is a major yield factor in Chinese fir.
迄今种子园中开花株数和雄球花产量稳定增长，多数无性系植株平均着花量约在700个上下，但仍有约半数无性系的1/3植株尚未开雄球花。
There were about 700 male flowers per bearing tree for most of clones, but 46% of clones had 1/3 ramets bearing no male flower at all.
迄今种子园中开花株数和雄球花产量稳定增长，多数无性系植株平均着花量约在700个上下，但仍有约半数无性系的1/3植株尚未开雄球花。
There were about 700 male flowers per bearing tree for most of clones, but 46% of clones had 1/3 ramets bearing no male flower at all.
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