【摘要】 在雷州半岛建立固定样地对铁冬青的形态特征、生物学特性、物候规律及生长规律等进行观测研究。结果表明:(1)铁冬青人工林的开花、结实和果实成熟期比天然林略早,低纬度、阳坡比高纬度、阴坡的种子成熟期提早15~20 d;铁冬青的人工林一般10年生开始开花结实,花芽形成期在2—3月,3月中旬开始开花,4月为盛花期,5月上旬—7月幼果形成,11月下旬—翌年2月果实成熟。(2)铁冬青天然林种子比人工林的种子发芽率高,孤立木种子比纯林的种子发芽率明显高,老树比幼树种子发芽率高,而不同种源间发芽率、发芽时间差异不明显。(3)2年生的铁冬青的生长随着气温与降雨量增大而加快,铁冬青的树高、地径与冠幅的生长高峰期出现于7月、8月和9月,这3个月占全年生长量的60%左右。更多还原

【Abstract】 Permanent sample plot has been set to do the observational studies on morphological characteristics,the biological characteristics,phenological regularity and growth rule of Ilex rotunda Thunb.The results show that the following conditions:(1)the blooming,fructification,fructescence of the plantation is a little earlier than the natural forest.Seed maturation growing in low latitudes,sunny slope is 15 to 20 days earlier than high latitudes,shady slope.Generally,the plantation of Ilex rotunda Thunb.takes ten years to begins blooming and seeding.The stage of flower bud formation is between February and March.While it begins to blossom in midMarch,the full-blossom period in April,the formation of young fruit between early May to July,and the fruit maturation from late November to the second year February.(2)The seeds of natural forest have the better germination rate than the plantation Ilex rotunda Thunb.The seed of isolated wood has the obvious advantage than the pure forest at the germination rate.The seed germination rate of old trees is higher than the young.While the differences are not significant between the germination rate and germination time of different povenances.(3) The growth accelerates with the rise of temperature and the increase of rainfall of 2-year-old Ilex rotunda Thunb.The peak growth period of tree high,ground diameter and crown appeared in July,August and September,and these three months take up 60% of annual growth.更多还原