为掌握青海省德令哈市农田主要捕食性天敌种类及其发生动态，于2018 — 2022年连续5 a应用马来氏网进行天敌昆虫采集，并对采集的主要捕食性天敌昆虫在实验室进行样本分拣及种类鉴定。结果表明，5 a共采集到主要捕食性天敌昆虫3目4科，分属于食蚜蝇科、褐蛉科、瓢虫科和草蛉科。作为该地区农田的优势天敌，埃褐蛉和多异瓢虫在4月底至5月上旬开始出现，埃褐蛉在7月中旬至下旬达到高峰，多异瓢虫在8月下旬达到高峰，大灰优蚜蝇在9月上旬至中旬达到高峰。

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.

S476.2

国家天敌等昆虫资源数据中心监测任务(德令哈ZX09S290300)。