Study on the Occurrence Dynamics of Main Predators in Delingha Farmland of Qinghai Province
In order to grasp the main predatory natural enemy species and their occurrence dynamics in Delingha farmland of Qinghai Province,from 2018 to 2022,Malay net was used for 5 consecutive years to collect natural enemy insects,and samples of the main predators were sorted and identified in the laboratory.The results showed that 4 families in 3 orders of major predatory natural enemies were collected in 5 years,which belonged to the family of Syrphidae,Hemerobiidae,Coccinellidae and Chrysopidae.As the dominant natural enemies of the farmland in this area,Hippodamia variegata and Hemerobiidae exoterus began to appear from late April to early May,Hemerobiidae exoterus peaked from mid July to late July,Hippodamia variegata peaked from late August to late September,and Eupeodes corollae peaked from early to mid September.
Predatory predatorFarmlandOccurrence dynamicDelingha City
国家科技期刊平台
NSTL
万方数据
