突脉青冈栽培生物学的初步研究

A Preliminary Study on Culture Biology of Cyclobalanopsis elevaticostata

室内发芽和场圃播种育苗试验结果表明，突脉静冈宜于１２月中旬采种．育苗试验结果表明，播种时间对苗高生长没有显著影响，切根处理对苗高生长、主根数、侧根数及其鲜重均有显著或一定水平的影响，月平均气温和月积温是苗高生长的主导因子．造林试验结果表明，苗木不同处理对造林成活率、幼树高生长、地径生长、冠幅生长、主根分布深度及侧根数均有较显著或显著或极显著的影响，其中均以带宿土苗木造林的为最大；幼树高径生长均属全期生长型，一年有两次生长高峰，月平均气温、月降雨量和月积温是幼树生长的主导气象因子，２月上旬平均气温升到８℃以上树液就开始流动，１２月上旬平均气温降到８℃以下树液就停止流动．

The trial raise of seedlings by interior germination and by being sown and nurtured in nursery showed that t5e ideal seed collecting time of Cyclobalanopsis elevaticostata is in December; and seedlling growing experiments showed that the effects of sowing time on height growth of seedlings is not significant,that the treatment of roots cutting has significant effects or effects to some extent on seedlings height,number of toproots,lateral roots and fresh weight of lateral roots,and that the monthly mean temperature and accumulative temperature have a positive effect on the yearly growth of seedlings;the silvicultural trials showed that the different treatments of seedlings have significant or very significant effects or effect to some extent on survival rate,height growth of yong trees,growth of root collar,growth of crown breadth,distributional depth of toproots and number of lateral roots,with the original soil bearing treatment being the best among them,that the height growth and yearly growth of root collar of young tree all belong to the whole growing season growth's form and exhibit vigorous growth peak for two times,and that the monthly mean temperature,monthly rainfall and accumulative temperature have a positive effect on the growth of young trees.