Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (6): 1349-1359.DOI: 10.3969/j.issn.1004-1524.2023.06.12

• Plant Protection • Previous Articles     Next Articles

Spatial and quantitative relationships between Ectropis obliqua hypulina and their natural enemy of spiders in 6 tea gardens

WU Xiaomenga,b(), XU Yuea, CHENG Honghaoa, CHEN Shiyana, ZHOU Xiazhib, ZOU Yundingb, BI Shoudongb,*()   

  1. a. School of Forestry and Landscape Architecture, School of Science, Hefei 230036, China
    b. School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
  • Received:2022-06-27 Online:2023-06-25 Published:2023-07-04

Abstract:

To exlore the spatial and quantitative relationship between natural enemy of spiders and Ectropis obliqua hypulina, so as to provide scientific basis for the comprehensive management of E. obliqua hypulina in tea garden. From July 8 to September 17 in 2021, the population of E. obliqua hypulina and its natural enemy in National High Tech Agricultural Park of Anhui Agricultural University, including Anji albino tea, Huangshan large leaf, Longjing 43, Nongkangzao, Pingyangtezao and Wuniuzao. The population dynamics of E. obliqua hypulina larvae and their natural enemy in 6 tea gardens were analyzed by using geostatistics, angle cosine coefficient method, closeness index and grey correlation degree, and the close degree of spatial and quantitative relationship between spider natural enemy and E. obliqua hypulina were studied. According to the sum of closeness index of the 6 tea gardens, the top 2 spiders closely related to the space of E. obliqua hypulina were Tetragnatha squamata and Misumenops tricuspidatus. The top 2 spiders closely related to the number of E. obliqua hypulina were Erigonidium graminicolum and T. squamata. According to the comprehensive analysis, the top 3 spiders closely related to the space and number of E. obliqua hypulina were T. squamata, Theridion octomaculatum and M. tricuspidatus. T. squamata was the most important natural spider natural enemy of E. obliqua hypulina in 6 tea gardens. The results provided a reference for the biological control, rational protection and utilization of spider natural enemy of E. obliqua hypulina.

Key words: tea garden, Ectropis obliqua hypulina, spatial and quantitative relationship, geostatistics, biological control

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