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林业科学 ›› 2003, Vol. 39 ›› Issue (5): 78-86.doi: 10.11707/j.1001-7488.20030512

• 论文及研究报告 • 上一篇    下一篇

枣园生态系统中主要害虫、天敌生态位及种间竞争的研究

师光禄 席银宝 王海香 李镇宇 夏乃斌   

  1. 山西农业大学农学院,太谷030800;北京林业大学,北京100083
  • 收稿日期:2002-09-06 修回日期:1900-01-01 出版日期:2003-09-25 发布日期:2003-09-25

THE NICHE OF IMPORTANT PESTS AND NATURAL ENEMIES AND COMPETITION AMONG THE SPECIES IN JUJUBE ORCHARD ECOSYSTEM

Shi Guanglu,Xi Yinbao,Wang Haixiang,Li Zhenyu,Xia Naibin   

  1. Department of Plant Protection, Shanxi Agricultural University Taigu030800;Beijing Forestry University Beijing100083
  • Received:2002-09-06 Revised:1900-01-01 Online:2003-09-25 Published:2003-09-25

摘要:

对太谷地区枣园生态系统中主要害虫、天敌的时间、空间生态位及不同营养层物种间竞争进行了调查研究。结果表明,在利用相同资源的物种中,存在着程度不同的生态位重叠和种间竞争现象。枣园间作物(或杂草的有无)和用药与否对时间生态位的宽度有明显的影响,但对生态位重叠与种间竞争的大小以及空间生态位的宽度没有影响;明确了害虫与天敌在时间与空间序列上的分布变化规律,为枣树害虫的综合生态调控提供了科学依据

关键词: 枣园生态系统, 害虫和天敌, 生态位, 竞争

Abstract:

The niche and competition among species of natural enemies and pests in different intercropped and managed jujube orchard ecosystems in Taigu were studied. The results showed that there were obvious niche overlaps and competitions in different species which used the same resources. The niche overlaps competition among species and spatial niche width were not disturbed by insecticide,weeds and intercropped plants. Time niche width was affected by insecticide, weeds and intercropped plants. The laws of distribution, and changes of natural enemies and pests in time and space were revealed by niche studies.

Key words: Jujube orchard ecosystem, Pest and natural enemies, Niche, Competition