枣园生态系统中主要害虫、天敌生态位及种间竞争的研究

doi:10.11707/j.1001-7488.20030512

Scientia Silvae Sinicae ›› 2003, Vol. 39 ›› Issue (5): 78-86.doi: 10.11707/j.1001-7488.20030512

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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

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

Abstract

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

Shi Guanglu;Xi Yinbao;Wang Haixiang;Li Zhenyu;Xia Naibin. THE NICHE OF IMPORTANT PESTS AND NATURAL ENEMIES AND COMPETITION AMONG THE SPECIES IN JUJUBE ORCHARD ECOSYSTEM[J]. Scientia Silvae Sinicae, 2003, 39(5): 78-86.

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

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