摘要
了解母树发育进程和花期,是种子园经营的一个重要方面,例如:小区无性系配置要求花期相遇;园址选择应有利于母树开花结实;建园材料除要有优良遗传性外,也要适当考虑种子产量,否则种子园就不能成为良种生产基地。我国60～70年代不少地区已进行了杉木物候观察,已知杉木南部产区盛花期约在3月上旬,中心产区3月中旬,北部产区3月下旬～4月初。但这些对种子园来说还是不够的,因为上述观测对象是实生株,并且不分种源、个体和立地条件。鉴于这方面资料甚少,我们于1988和1989年在浙江余杭县长乐林场杉木种子国进行了观测,现报告其初步结果。
In this paper, the effect of clone provenance, clone and sunlight condition on anthesis and quantity of strobiles was analysed. It shows that through two years' observation: the average number of male cone/per 1 year branch in full sunshine plots is about 1.7~2.3 times of those in sunlight-deficient plots and the ratio of female cone about 3~9 times. Under the same sunlight condition, the strobile number/per branch of clones which come from the Central part of distribution area is obviously less than that of the clones from South or North part. The difference for male cone number is about 40% and for female cone number is about 100 %. In the year of cool and rainy March, the anthesis of the earliest flowering clones is 12~15 days earlier than the latest flowering ones. The earliest anthesis clones mainly come from South part of the distribution area but there are also some from Central even North part; The latest anthesis ones mainly from North part but there are also some from Central or South part. Lasting fine and warm weather can make the anthesis appear earlier and shorten its duration, especially for microstrobilus.
出处
《林业科学研究》
CSCD
北大核心
1991年第4期453-458,共6页
Forest Research
关键词
杉木
种子园
花期
球花量
Chinese Fir seed orchard
anthesis
strobiles quantity
