10种园林竹类植物出笋及幼竹高生长节律

为探讨园林竹类植物的出笋-成竹规律,对10种园林竹类植物的出笋期、退笋率、成竹率、幼竹高生长节律进行了观测、分析。结果表明:10种园林竹类植物出笋时间在6月下旬至11月中旬,大部分竹子7月上旬即开始发笋,10月中下旬基本结束;出笋持续的时间为80～120d,退笋率17.4%～30.0%,成竹率70.0%～82.6%;各竹种5d高生长量呈"低—高—低"的趋势,竹笋-幼竹高生长与时间的关系经11种单因子生长数学模型拟合,以三次多项式模型拟合最优。

Growth Rhythm of Bamboo Shoots and Young Bamboos of Ten Garden Bamboo Species

The bamboo shooting stage, mortality, survival rate and young bamboo height-growth rhythm of 10 garden bamboo species were analysed aiming at discussing the growth rhythm of bamboo shoots and young bamboos of garden bamboo species. Results show that the shooting time of 10 garden bamboo species is from the last ten-day period of June to the middle ten days of November. More bamboos begin shooting in the first ten-day period of July and stop in the last ten-day period of October. The period of shooting is between 80 and 120 days. The mortality is 17.4% - 30.0% and the survival rate is 70.0% - 82.6%. The height-growth of all bamboo species within 5 days exhibits a tendency of low-high-low. The mathematical model of the height-growth for young bamboo accords well with cubic polynomial model in accordance with 11 models of single factor analysis.