华山松无性系种子园结实习性观测与分析  

Observation and analysis on cone-bearing characteristics of Pinus armandii Franch in clonal seed orchard

作　　者：王秀荣[1] 赵杨[1] 李桐森[2] 

机构地区：[1]贵州大学林学院,贵州贵阳550025 [2]西南林学院,云南昆明650224

出　　处：《山地农业生物学报》2007年第5期392-396,共5页Journal of Mountain Agriculture and Biology

基　　金：贵州大学引进人才基金项目资助(11202-701-701139301)

摘　　要：对云南楚雄华山松Pinus armandii Franch无性系种子园结实习性进行调查，结果表明，华山松球果生长期较长，最长约为170d。球果的年生长大致呈“s”型曲线，速生期较明显，为5～7月；华山松球果主要着生在树冠中上部1～2龄枝上，树冠内膛是结实稀疏区，树冠西、南方向结实量明显高于北方。定植密度对树体生长和结实量影响较大，5m×5m密度结实量是其它密度的5倍以上。树冠垂直方向上球果的饱满种子率和出种率无显著差异，而千粒重差异显著，树冠上部种子的千粒重最大，平均427．6g，下部次之，为400．8g，中部为383．9g。The cone growth of Pinus armandii lasted for 170 days. The growth seems to be a ＂S＂ curve and the rapid growth period occured obviously from May to July. Cones mainly produced on the 1-2 year branches and the inner part of crown had few cones. There were distinctly more cones in the west and the south than in the north. The plant density had a great influence on the cone production and the growth. The cone production in 5m × 5m was 5 times as that in other densities in the seed orchard. There was no difference in rate of seed output and plump seed percentage vertically. The 1000 - seed weight in the upper, middle and lower crown was 427.6g, 383.9g and 400.8g respectively.

关 键 词：华山松 种子园 无性系 球果生长 结实习性 

分 类 号：S791.241.05[农业科学—林木遗传育种]