高粱穗部害虫群落多样性和相似性及防治策略研究  

Study on Diversity and Comparability of Pest Community in Sorghum Ear and Its Control Strategy

作　　者：赵甘霖[1] 丁国祥[1] 程开禄[1] 

机构地区：[1]四川省农业科学院水稻高粱研究所,四川泸州646100

出　　处：《安徽农业科学》2008年第25期10978-10979,共2页Journal of Anhui Agricultural Sciences

基　　金：四川省财政育种工程项目(2006yzg11-0230)

摘　　要：[目的]为高粱害虫的预测提供参考,为高粱害虫防治及高粱生产提供指导。[方法]应用昆虫群落生态学原理,对泸州市不同类型高粱穗部害虫群落进行调查,分析高粱穗部害虫群落的多样性及不同群落之间的相似性。[结果]查明泸州地区有高粱穗部害虫45种,各群落中均以粟穗螟为优势种,各群落的多样性指数均较低,害虫发生数量极不均匀,优势种极突出,群落稳定性较差,几种类型高粱地的穗虫群落相似性极强,可以归为一类进行防治。[结论]对以粟穗螟为主的高粱穗部害虫,采用"在越冬防治基础上,适时提早高粱播栽期,压低一二代幼虫密度和受害面积,药剂防治重害田"的尽量减少农药施用量的防治策略。粟穗螟大发生年应在高粱扬花末至灌浆初期用菊酯类杀虫剂进行防治。[ Objective] The aim was to provide reference for the forecast of sorghum pests and provide guidance for the control of sorghum pests and sorghum production. [ Method] The different pest communities in the ear of sorghum in Luzhou city were investigated applying the insect community ecology theory and the diversity of pest communities in the ear of sorghum and comparability in different communities were analyzed. [ Result] It was found out that there were 45 species of pests attacking sorghum panides in Luzhou area. Mampava bipunctella was the dominant species in the community. The diversity index of each community was all low, the quantity of pest occurrence was extremely inhomogeneous, the dominant species was very outstanding, the community stability was poor and the ear pest community comparability in several types of sorghum fields was very strong, which could be clustered in the same group to control. [ Conclusion] As for the pests in the ear of sorghum which was mainly M. bipunctella, the control strategy of putting the sorghum planting time earlier properly to depress the density of the frost two generation larvae and the damaged areas on the basis of over-wintering control and controlling the serious damaged fields using pesticides to reduce the pesticide application amount was applied and the M. bipunctella should be controlled with chrysantheroum ester insecticide at the end of flowering stage to the earlier grouting stage in its outbreak year.

关 键 词：高粱 群落多样性 群落相似性 防治策略 

分 类 号：S435.14[农业科学—农业昆虫与害虫防治]