小麦-玉米间作生态系统能流参数研究

应用生态学报 ›› 2003, Vol. ›› Issue (9): 1507-1511.

小麦-玉米间作生态系统能流参数研究

王建林, 王莉, 包再德, 王元林

西藏农牧学院, 林芝 860000

收稿日期:2001-02-09 修回日期:2001-11-19
通讯作者: 王建林,男,1969年生,副教授,主要从事农业生态系统的理论与方法研究,发表论文50余篇.Tel:0894-5821242,E-mail:123hdfly@163.com.
基金资助:
国家社会科学基金资助项目(02BJY031)

Parameters of energy flow in wheat - corn intercropping agroecosystem

WANG Jianlin, WANG Li, BAO Zaide, WANG Yuanlin

Agricultural Department of Tibet Agricultural and Animal Husbandry College, Xizang 860000, China

Received:2001-02-09 Revised:2001-11-19

摘要/Abstract

摘要： 采用田间调查与室内测定相结合的方法,以小麦-玉米间作生态系统为例,较系统地研究了初级生产者(农作物、杂草)、次级生产者(害虫、天敌)和分解者(微生物、原生动物和腐生动物)的能流参数值结果表明,该生态系统能流具有初级生产力和能量转化效率高,通过食物链递减率大,各营养层内每生产单位能量所需的能量相对较少,上一营养层对下一营养层能量利用程度逐渐增大等特征。

关键词: 小麦-玉米间作生态系统, 能流特征

Abstract: The parameters of energy flow of primary producers (agricultural crop and weed), consumers (pests and their natural enemies) and decomposer (soil microbe, protozoan and saprozoite) in wheat-corn intercropping agroecosystem in Tibet of China were studied by field investigation and laboratory measurement.The results showed that the wheat-corn intercropping agroecosystem had high primary productivity and energy translation efficiency, and the degression rate of energy flow through food chain was also high.At each nutritive layer of this agroecosystem, relatively less energy was required to product unit energy, and degree of energy utilization of superior nutritive layer from lower nutritive layer was increased gradually.

Key words: Wheat-corn intercropping agroecosystem, Features of energy flow

中图分类号:

S181.6
S314

王建林, 王莉, 包再德, 王元林. 小麦-玉米间作生态系统能流参数研究[J]. 应用生态学报, 2003, (9): 1507-1511.

WANG Jianlin, WANG Li, BAO Zaide, WANG Yuanlin . Parameters of energy flow in wheat - corn intercropping agroecosystem[J]. Chinese Journal of Applied Ecology, 2003, (9): 1507-1511.