肿节少穗竹地下茎生长规律研究

Growth Law of Oligostackyum oedogonatum

主要研究肿节少穗竹的地下茎的生物学特性，即竹鞭年生长规律、竹鞭垂直分布与水平分布、竹鞭芽变化规律及竹鞭根系生长规律，研究结果表明：竹鞭延伸生长量与温度关系密切，一年中鞭笋生长量随着月均温的升高而加大，8月达到最大，到12月冬季来临进入休眠；竹鞭主要分布在0-40cm土层，且分布较为均匀，40cm以下分布很少；2—3龄鞭壮芽数、笋芽数最多，转化为笋及鞭也多。根的萎缩一般从3年生鞭开始，但肿节少穗竹2年生即有萎缩，4年生鞭未发现有再生不定根。

Annual growth rhythm, overall and horizontal distribution of bamboo rhizome, variation law of rhizome bud and bamboo root system of Oligostackyum oedogonatum were studied. Result shows that extending growth of bamboo rhizome has close relation with temperature. Rhizome shoot is accelerated with monthly mean temperature, got to the top in August. Dormancy of bamboo draws near in December; bamboo rhizome distributed in 0-40 em soil layer,rarely under 40 era; the numbers of full buds and shoots of the rhizomes at 2-3-year-old are the most ,having more transformation into bamboo and rhizome. Root atrophy begins from 3-year-old. Two-year-old Oligostackyum oedogonatum have phenomenon of root atrophy. An adventitious root hasn＇ t been found in 4-year-old bamboo.