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- Title
江苏丘陵地区早春桃园主要小型 害虫和天敌发生初探.
- Authors
肖 婷; 褚姝频; 许 媛; 周福才; 姚克兵; 杨敬辉
- Abstract
[Objectives] To provide a basis for the establishment of green control measures in peach orchard pests in early Spring. [Methods] The activity, location, distribution and occurrence dynamics of small pests, and their natural enemies, in peach orchards were monitored using yellow board traps in early spring (March 27-May 13), and their spatial and temporal niche widths and overlap values, determined. [Results] The main pests in peach orchards in early spring are leafhoppers, aphids and thrips, and their main natural enemies are lacewings, ladybirds and spiders. The peak of overwintering of adult leafhoppers was in late March, and these were most active in the middle and upper strata of peach trees. The peak of overwintering of thrips was in the late April, with later generations alternating. Most flowering occurs in the upper-middle strata of peach trees, and insect activity moved down the tree after petal fall. Ladybugs moved higher in the tree after completing hibernation. The peak periods of chrysopids and spiders were synchronous with those of leafhoppers, and there was no significant difference in the activity zones of these taxa. There was no significant difference in the utilization of resources among the three pests in space, but their temporal distribution differed; that of the three natural enemies having high overlap with that of pests. [Conclusion] Green control measures for pests in peach orchards in early spring should include colored plate traps hung around the perimeter of the orchard more than 10 cm higher than the main branches of peach trees. Weeds should be removed to reduce the base number of leafhoppers, prevent their migration to peach trees, and to reduce thrip damage. Color plate traps should not be used during the flowering period to reduce the capture of natural enemies and bees.
- Publication
Chinese Journal of Applied Entomology, 2021, Vol 58, Issue 1, p195
- ISSN
2095-1353
- Publication type
Article
- DOI
10.7679/j.issn.2095-1353.2021.021