肿节少穗竹出笋成竹生长规律  

A study on growth regular pattern of Oligostachyum oedogonatum in shooting period

作　　者：范怡[1] 黄甫昭[2] 丁雨龙[1] 王福升[1] 

机构地区：[1]南京林业大学竹类研究所,南京210037 [2]广西壮族自治区中国科学院广西植物研究所

出　　处：《林业科技开发》2013年第3期69-72,共4页China Forestry Science and Technology

基　　金：福建省林业科研项目(编号:闽林科[2011]3);国家"十二五"科技支撑项目(编号:2012BAD23B05)

摘　　要：观测肿节少穗竹的幼竹-成竹生长过程,分析其出笋成竹的生长规律。结果表明,肿节少穗竹出笋时间约始于4月中旬,历时约45d,出笋初期出笋较少(持续时间3d左右,占7.42%),盛期出笋数较多(持续时间15d,占77.48%),末期出笋数下降(持续时间27d,占15.10%),退笋原因主要是虫退,占退笋总数的73.78%,平均成竹率为64.03%。各同生群高生长呈"S"型曲线,采用逻辑斯蒂方程拟合精度较高,拐点出现的时间均是各同生群曲线高生长的关键时期,且较早同生群的竹笋自始至终要比较晚同生群要高。The growth regularity of Oligostachyum oedogonatum in shooting period was analyzed by investigating its process of bamboo shoots and the young bamboo. The results showed that the shoot emergence of Oligostachyum oedogonatum began from mid-April and lasted about 45 days ; few shoots emerged at the preliminary stage of shooting, this situation lasted about 3 days, and the shooting quantity accounted for 7.42% of the total shooting quantity ; more shoots emerged at the prosper- ous stage of shooting, this situation lasted about 15 days and the shooting quantity accounted for 77.48% ; fewer shoots e- merged at the last stage of shooting, this situation lasted about 27 days and the shooting quantity accounted for 15.10%. Pest was the most important factor of shoot degradation and the degraded shoot quantity accounted for 73.78%, the average rate of bamboo shoot becoming young bamboo was 64.03%. The height growth of all cohorts fitted to the sigmoid curve, which can be well described by Logistic equation, and the inflexion appearing time of each carve was the key growth peri- od. The culms of the earlier cohorts were constantly higher than that of the later ones.

关 键 词：肿节少穗竹 出笋期 生长规律 拐点 

分 类 号：S795.02[农业科学—林木遗传育种]