玉米螟优势捕食性天敌控害效益评价  

Control Benefit Evaluation of Predatory Natural Enemies of Pyrausta nubilalis

作　　者：尹鹏 丁新华[2] 付开赟 吐尔逊.阿合买提 何江[2] 郭文超[3] YIN Peng;DING Xin-hua;FU Kai-yun;Tursun Ahmat;HE Jiang;GUO Wen-chao(College of Agronomy,Shihezhi University,Shihezi Xinjiang 832003,China;Key Laboratory of Intergraded Management of Harmful Crop Vermin of China North-western Oasis,Ministry of Agriculture P.R.China/Researeh Institute of Plant Proteetion,Xinjiang Academy of Agricultural Scienees,Urumqi 830091,China;Institute of Mieroorganisrn Application in Xinfiang Academy of Agricultural Sciences,Urumqi 830091,China)

机构地区：[1]石河子大学农学院,新疆石河子832003 [2]新疆农业科学院植物保护研究所/农业部西北荒漠绿洲作物有害生物综合治理重点实验室,乌鲁木齐830091 [3]新疆农业科学院微生物应用研究所,乌鲁木齐830091

出　　处：《新疆农业科学》2018年第4期712-718,共7页Xinjiang Agricultural Sciences

基　　金：新疆维吾尔自治区科技支撑项目"新疆玉米主产区玉米螟绿色防控关键技术研究与示范"(201531103);农业部西北荒漠绿洲作物有害生物综合治理重点实验室开放基金"新疆玉米螟主要天敌资源研究及其优势天敌控害效益评价"(KFJJ20170103);国家重点研发计划项目"北方玉米化肥农药减施技术集成研究与示范"(SQ2017ZY060067)~~

摘　　要：【目的】研究3种玉米螟优势捕食性天敌对玉米螟卵和1、2、3龄的捕食功能反应,为玉米田有害生物可持续防治提供科学依据。【方法】将饥饿处理24 h后的方斑瓢虫成虫、黄褐新园蛛、中华草蛉3龄幼虫分别与不同密度玉米螟卵和1、2、3龄幼虫进行组合,24 h后测定捕食量。【结果】3种优势天敌对各龄期玉米螟幼虫的功能反应均属于Holling-Ⅱ型,即天敌的捕食能力和和猎物的密度为负加速曲线。中华草蛉3龄幼虫对玉米螟的控制能力最强,其对1龄、2龄、3龄玉米螟幼虫24 h最大捕食量分别为353.32、53.98和17.42头,并对卵块有捕食作用,24 h最大捕食量为251.03粒。【结论】中华草蛉3龄幼虫对玉米螟具有良好的控害潜能,应保护和利用玉米田田间优势捕食性天敌。【Objective】The predatory natural enemies of 3 kinds of corn borer predatory response to the eggs of corn borer and 1,2,3 years of age were studied to provide scientific basis for the sustainable prevention and control of harmful organisms in maize fields.【Method】The 3 instar larvae of pinychus cineriaris,the new arboretum,and the 3 larvae of Chrysopa sinica were combined with the eggs of the Pyrausta nubilalis and the 1,2 and 3 instar larvae of the Pyrausta nubilalis,respectively,after the treatment of starvation,the amount of food was measured after 24 h.【Result】The functional responses of the 3 dominant natural enemies to the larvae of the corn borer of each age were Holling-Ⅱ,namely,the predatory capacity of the natural enemy and the density of the prey were negative acceleration curves. The 3 instar larvae of Chrysopa sinica had the strongest control ability to the corn borer. The maximum 24 h predation of the larvae of 1,2 and 3 instar was353. 32,53. 98 and 17. 42 respectively. The maximum predation rate for 24 hours was 251. 03 eggs.【Conclusion】The 3 instar larvae of Chrysopa sinica have good control potential for the Pyrausta nubilalis. Therefore,it is of great significance to protect and utilize the predatory natural enemies in the corn fields,which is of great significance to control the occurrence and damage of Pyrausta nubilalis.

关 键 词：捕食性天敌 中华草蛉 玉米螟 捕食功能反应 控害效益 

分 类 号：S435.132[农业科学—农业昆虫与害虫防治]