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草业学报 ›› 2012, Vol. 21 ›› Issue (6): 252-257.

• 研究论文 • 上一篇    下一篇

五节芒生物学特性及能量生产动态变化

陈慧娟1,宁祖林2,3*,张卓文4   

  1. 1.武汉长绿世纪园林景观工程有限公司,湖北 武汉 430019;
    2.中国科学院华南植物园,广东 广州 510650;
    3.中国科学院武汉植物园,湖北 武汉 430074;
    4.华中农业大学园艺园林学院,湖北 武汉 430070
  • 收稿日期:2011-09-02 出版日期:2012-06-25 发布日期:2012-12-20
  • 通讯作者: E-mail:ningzulin@163.com
  • 作者简介:陈慧娟(1982-),女,湖北天门人,硕士。E-mail:chenhuijuan111@163.com
  • 基金资助:
    中国科学院重要方向性项目(KSCX2-G-027-4)资助。

Studies on the biological characteristics and dynamics of energy production of Miscanthus floridulus

CHEN Hui-juan1, NING Zu-lin2,3, ZHANG Zhuo-wen4   

  1. 1.Wuhan Green Century Landscape Co., Ltd, Wuhan 430019, China;
    2.South China Botanical Garden, Chinese Academy of Science, Guangzhou 510650, China;
    3.Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China;
    4.College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
  • Received:2011-09-02 Online:2012-06-25 Published:2012-12-20

摘要: 本研究从获得最大的能量生产效果出发,依据五节芒的生长特性、生物量、热值、生物质特性等指标,明确其生物量、热值的变化规律,以获得最大能量生产效果,从而为其合理开发利用提供理论依据。通过对五节芒生物学特性及能量生产动态的相关观测研究,结果表明:五节芒在展叶期生长缓慢,拔节期逐步加速,日均增长为2.12 cm,抽穗开花期日均增长达2.52 cm;结实期生长速度开始下降,并逐步停止生长;在年生长周期中,春季和秋季为分蘖高峰;黑暗条件下更有利于种子萌发。年均干重热值为果穗(18.27 kJ/g)>茎秆(17.76 kJ/g)>叶(17.44 kJ/g),年均灰分含量为叶(7.03%)>果穗(3.44%)>茎秆(2.55%)。能量现存量的季节变化主要受地上部生物量的影响,其变化规律基本与地上部生物量的变化相一致,热值的变化对其影响较小。

Abstract: To obtain the greatest energy output of Miscanthus floridulus, the basic biological traits and biomass dynamics, including yearly dynamics of biomass and calorific value, the biomass characteristics and other indicators, were studied. M. floridulus grows slowly at the leaf-expansion stage and increasingly faster at the stem-elongation stage. The average growth rate was 2.12 cm per day at the ear sprouting stage and 2.52 cm per day at the flowering stage, after which, the growth rate decreased and then stopped. There was strong tillering ability with peaks in spring and autumn. The dark treatment was beneficial for seed germination. The annual average caloric value of different organs was: spike (18.27 kJ/g)>stem (17.76 kJ/g)>leaf (17.44 kJ/g). The annual average ash was in the order: leaf (7.03%)>spike (3.44%)>stem (2.55%). Although the biomass energy varied with the biomass change, the caloric value had little significant effect on it.

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