Analysis of the community structure and temporal patterns of main pests and their natural enemies at 'Zhonghuang No. 1' tea garden in Chongqing

The community structure of the main pests and their natural enemies in the "Zhonghuang No. 1" tea garden has important reference value for taking target measures to prevent and control the main insect pests, as well as the conservation and utilization of their natural enemies.

The classification and statistics of pests and natural enemies were recorded by leaf inspection method, pot tapping method, yellow sticky trap method and laboratory observation methods from 2020 to 2021. The composition of pests and their natural enemies was analyzed by using the methods of community diversity analysis and temporal pattern analysis.

The analysis of community structure composition revealed that the community composition of "Zhonghuang No. 1" tea garden included 28 species, 23 families and 9 orders of pests and 40 species, 24 families and 8 orders of natural enemy. The community diversity and evenness indices remained stable over the past two years. The dominant species of pests were leafhopper and Dendrothri psminowai, while the natural enemies of the dominant species were spiders. The temporal patterns of the main pests and their natural enemy communities were divided into four stages in the seasonal dynamics. The occurrence characteristics of the main pests and their natural enemies in different periods were significantly different, but minimal variation between the same periods across two years.

The results were helpful to elucidating the relationship between pests and natural enemy communities in tea gardens. As well as provided theoretical basis for the prevention and control of pests and the utilization of natural enemies in tea gardens.