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
摘要
Abstract
[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 preven-tion 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 a-mount 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 was 353. 32, 53. 98 and 17. 42 respectively. The maximum predation rate for 24 hours was 251. 03 eggs.[Conclu-sion]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Key words
predator/Chrysopa sinica/Pyrausta nubilalis/predatory functional response/pest control benefits分类
农业科技引用本文复制引用
尹鹏,丁新华,付开赟,吐尔逊·阿合买提,何江,郭文超..玉米螟优势捕食性天敌控害效益评价[J].新疆农业科学,2018,55(4):712-718,7.基金项目
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) （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)Scientific Support Project of Xinjiang Uygur Autonomous Region: " Key Green Technique Research on and Demonstration of Control-ling Pyrausta nubilalis in Major Corn Growing Zones in Xinjiang"(201531103)and Open Project Fund for Key Laboratory of Intergraded Manage-ment of Harmful Crop Vermin of China North-western Oasis, Ministry of Agriculture " Research of Main Natural Enemy Resources for Corn Borer and Its Evaluation of Natural Enemy Activities in Xinjiang"(KFJJ20170103)and The National Key Research and Development Program of China:" Integration Research on and Demonstration of Reducing Technology on Chemical Fertilizers and Pesticide in the Northern Corn "(SQ2017ZY060067) （KFJJ20170103）
