【摘要】 对卷斗青冈 1年生苗高生长过程进行定期观察研究 ,应用有序聚类法将 1年生苗苗高生长时期划分为 4个阶段 :出苗期 ( 3月 1 5日～ 5月 1 5日 ) ;生长初期 ( 5月 1 6～ 7月 2 5日 ) ;生长盛期 ( 7月 2 6日～ 9月 2 5日 ) ;生长后期 ( 9月 2 6日～ 1 1月 1 0日 ) .生长盛期的高生长量占全年生长的 5 2 .2 7% ,生长盛期的持续时间及高生长率对苗高生长起决定作用 .而生长盛期正值夏季高温干旱 ,从而使得及时解决这一时期苗木的水、肥、热供求矛盾成为苗木培育的关键所在更多还原

【Abstract】 Sequence sample cluster analysis is used to conduct a research on the growth process of the annual seedling height of Cyclobalanopsis pachyloma for seed sowing The results indicate that the growth process of the seedling height can be divided into four stages,juvenile stage (March 15~May 15);early growth stage (May 16~July 25);rapid growth stage (July 26~September 25) and late growth stage (September 26~November 10) The rapid growth stage takes only two months,But the increment in this stage account for most of the total increment of the whole year It is very important to solve the contradiction between the supply and demand of water,fertilizer,temperature in therapid growth stage of the seedling更多还原