一、目的要求:通过调查,要基本查清当地农作物的主要害虫天敌的种类、分布和优势种群的发生消长规律,提出保护利用规划,促进生防工作。二、调查内容:(一)天敌种类的调查。1.捕食性天敌:直接捕食害虫的昆虫,如蜘蛛、食虫螨类等。2.寄生性天敌:在害虫体内营寄生生活的,如寄生蜂类、寄生蝇类等。3.病原做生物:侵入害虫机体,使之染病死亡的微生物:病毒、细菌、真菌、线虫等。(二)天敌生活规律的调查。对当地主要天敌的生活习性(食性、食量等),发生消长 I. Objectives and Requirements: Through investigation, it is necessary to basically find out the types and distribution of the major pests and natural enemies of local crops and the occurrence and growth of dominant populations, and put forward plans for protection and utilization and promote the work of prevention and control of biological diseases. Second, the survey: (a) natural enemy species survey. 1. Predatory enemies: insects that directly prey on pests, such as spiders, insects and other mites. 2. Parasitic natural enemies: camp parasites living in pests, such as parasitic wasps, parasitic flies and so on. 3. Pathogenic biology: Invasion of pests to make it infected with the death of microorganisms: viruses, bacteria, fungi, nematodes and so on. (B) investigation of natural enemies of life. The habits and habits of the main natural enemies (food habits, appetite, etc.) of the local population decline