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应用生态学报 ›› 1996, Vol. 7 ›› Issue (2): 159-163.

• 研究论文 • 上一篇    下一篇

亚热带中山立地鸭茅分蘖丛生长与再生的定量分析

杨允菲1, 傅林谦2, 朱琳2   

  1. 1. 东北师范大学国家草地生态工程实验室, 长春130024;
    2. 中国农业科学院畜牧研究所, 北京100094
  • 收稿日期:1995-01-01 修回日期:1995-06-04 出版日期:1996-04-25 发布日期:1996-04-25
  • 基金资助:

    国家"八五"科技攻关项目;国家自然科学基金资助项目

Quantitative analysis of growth and regeneration of Dactylis glomerata tiller tuft on subtropical mid-mountain sites

Yang Yunfei1, Fu Linqian2, Zhu Lin2   

  1. 1. National Laboratory of Grassland Ecological Engineering, Northeast Normal University, Changchun 130024;
    2. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100094
  • Received:1995-01-01 Revised:1995-06-04 Online:1996-04-25 Published:1996-04-25

摘要: 对亚热带中山立地鸭茅分蘖丛的生长与再生特征的定量分析表明,在5月份开花期和8月份再生草的取样中,鸭茅分蘖丛的蘖数均随着丛径的增加里直线增加;丛生物量、丛枯死量分别与丛径、丛蘖数之间均有极显着的正相关;平均单蘖重随着丛径的增加均呈变形双曲线函数减少,随着丛蘖数的增加均呈幂函数减少;抽穗率随着丛径和丛菜数的增加均呈直线下降.在生长季前期,鸭茅分蘖丛的生长策略是将大部分能量投入生殖生长.

关键词: 鸭茅, 分蘖丛, 丛径, 生物量, 再生量, 数量性状, 污泥农用, 城市污泥, 植物-土壤系统

Abstract: Quantitative analysis of growth and regeneration characters of Dactylis glomerata tiller tufts shows that during its blooming and vegetative growth periods, the number of tillers per tuft is linearly increased with increasing tuft size. The living and dead biomass of the tuft is positively correlated to its size and tiller number f respectively. The mean weight of each tiller is respectively decreased hyperbolically and power-functionally with increasing tuft size and tiller number,and the earing rate is linearly decreased with the increase of them. The strategy for the growth of tuft is to throw most part of energy into its reproductive growth at the earlier growing stages.

Key words: Dactylis glomerata, Tiller tuft, Tuft size, Biomass, Yield of aftergrass, Quantitative character, municipal sewage sludge, plant-soil system, sewage sludge utilization