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对象州县茶花山 1.5代杉木种子园无性系的开花规律及生长性状进行了 3年的定点观察调查和综合分析 ,结果表明 :各无性系随其产地纬度的递增 ,雌雄花期相应推迟 ,来源于桂北的无性系 ,其平均散粉盛期比桂南无性系迟 7～ 9d,可授期晚 6～ 8d;球花在嫁接母树树冠上的垂直分布呈明显的成层性 ,约 90 %的雄球花集中在树冠的中下层 ,80 %以上的雌花则着生于中上层。桂南产区的无性系进入开花结实盛期较桂北的早。无性系间球花产量存在显著差异 ,雌雄花产量的重复力分别为 0 .69和 0 .80 ;不同无性系的雌雄比率相差很大 ,且这种差异具有较大的稳定性。据此 ,对种子园的营建及经营管理提出了一些建议和讨论。
The results showed that the clonal flowering and the growth traits of Camellia sinensisseed 1.5-year Chinese fir seed orchard were observed and analyzed comprehensively. The results showed that: In clonal clones of northern Guangxi, the average age of powdery millet was 7 ~ 9 days later than that of the southern Guinan clones, which could be granted 6 ~ 8 days late. The vertical distribution of globular flowers on the canopy of grafted mulberry trees was obviously stratified. About 90% Male ball of flowers concentrated in the lower middle canopy, more than 80% of female flowers was born in the upper. Clones in the southern region of Guinan entered the flowering and fruiting period earlier than in northern Guangxi. There was a significant difference in the yield of flowers between clones. The repeatability of the male and female flowers was 0.69 and 0.80, respectively. The male and female ratio of different clones varied greatly, and the difference was more stable. Accordingly, some proposals and discussions are put forward on the construction and management of Seed Garden.