摘要
对苦竹Pleioblastusamarus生长发育规律进行了初步研究。结果表明:苦竹发笋盛期是5月12日至5月20日,出笋规律呈偏正态分布。苦竹退笋率为41 21%。退笋的主要原因是营养供应不足。苦竹秆形高生长可分为4个时期:初期15d,日生长量1～3cm;上升期10d,日生长量7～20cm;盛期20d,日生长量可达45cm;末期5d,日生长量迅速下降,直至停止。苦竹秆形高生长呈Logistic增长,昼夜高生长量变化不甚明显,在昼夜24h出现3次生长高峰。
The rhythm of growth and development of Pleioblastus amarus were studied.The main results were as follows:(1)The prosperous period of appeared bamboo shoot was in the middle ten days of May.(2)The percentage of shoot degradation was 41.21%,mainly because of nutrient deficiency.(3)The height growth of young culm could be divided into four stages:initial stage,ascending stage,boosting stage and terminal stage.(4)The height growth of young culm followed logistic curve.(5)The increment of young culm of night was close to that of daytime,and three growth peaks appeared during 24 h.
出处
《浙江林学院学报》
CAS
CSCD
北大核心
2005年第1期1-5,共5页
Journal of Zhejiang Forestry College
基金
浙江省科学技术厅资助项目(001102204)
关键词
苦竹
生长发育规律
退笋率
生长量
Pleioblastus amarus
rhythm of growth and development
degenerated shoot rate
increments
