摘要
研究以母竹无性苗和 级、 级毛竹实生苗为试材 ,探讨不同竹苗类型的造林效果。造林第 3年结果表明 ,毛竹实生苗林分在新竹数、地径、冠幅、枝盘数和单株叶片数等 5个性状 ,与母竹无性苗间的差异达极显著或显著水平。 级、 级实生苗当年新竹数均显著优于母竹无性苗 7.2～9.4倍 ,冠幅较母竹无性苗大 90 .6 %～ 1 0 7.2 %。林分郁闭度高达 0 .77～ 0 .82 ,为毛竹实生苗林分的2 6 .9%～ 2 8.7%。地径、枝盘数和单株叶片数 3项指标均为母竹无性苗优于实生苗 ,枝盘数显著大于 级、 级实生苗 ;单株叶片数显著大于 级实生苗 ,与 级实生苗比较并不显著。地径与 级、 级实生苗比较均不显著。母竹无性苗虽然胸径、全高、枝下高大于实生苗 ,但差异未达显著水平。立竹密度、叶面积指数、生物量 3项指标差异巨大 , 级、 级实生苗立竹密度分别比母竹无性苗大7.4倍和 9.2倍 ;叶面积指数分别大 4 .4 9倍和 3.0 6倍 ;生物量分别大 5 .5倍和 8.
This research discovers the afforest outcome of different kinds of Mose Bamboo by sample tests on the clones seedling, the grade Ⅰ and the grade Ⅱ seed sprouting seedling. The three year experiment shows that the difference between seed sprouting seedling and clones seedling is obvious, on the following five aspects: the number of new born seedling, seedling diameter near the earth, size of the head, the number of branch, the number of blades of a single seedling. The grade Ⅰand the grade Ⅱ's number of new born seedling is definitely greater than that of clones seedling by 7.2～9.4 times in the same year, while its head size is bigger than that of clones seedling by 90.6%～107.2%. The woods density reaches to 0.77～0.82, which is higher than clones seedling by 26.9%～28.7%. However, clones seedling is superior to the seed sprouting seedling on seedling diameter near the earth,the number of branch and the number of new born seedling. More specifically, clones seedling's layer of leaves is obviously greater than that of the grade Ⅰand the grade Ⅱseed sprouting seedling. Its leaves' number of one seedling is obviously greater than that of the gradeⅡseed sprouting seedling,but not obviously superior to that of the gradeⅠ seed sprouting seedling; Their seed diameters near earth are almost at the same level.Although clones seedling is slightly superior to seed sprouting seedling on chest diameter, seedling height and the height of main branch,but the advantage is not high enough, the difference of the woods density, the leaves area indicator, the organism weight between them is large: the woods density of the gradeⅠand gradeⅡseed sprouting seedling is greater than that of clones seedling by 7.4 times and 9.2 times respectively;and the leaves area indicator of the gradeⅠand grade Ⅱseed sprouting seedling is greater than that of clones seedling by 4.49 times and 3.06 times respectively;and the organism weight of the gradeⅠand the grade Ⅱ is greater than that of clones seedling by 5.2 times and 6.1 times.
出处
《竹子研究汇刊》
2003年第2期36-40,共5页
Journal of Bamboo Research
