间作与施用水杨酸甲酯对麦长管蚜及其主要天敌空间分布的影响  

Effects of wheat-oilseed rape intercropping and methyl salicylate application on the spatial distributions of Sitobion avenae and its main natural enemies

作　　者：董洁[1] 刘英杰[1] 王光[1] 刘勇[1] 

机构地区：[1]山东农业大学植物保护学院,山东泰安271018

出　　处：《应用生态学报》2012年第7期1940-1944,共5页Chinese Journal of Applied Ecology

基　　金：科技部中-比合作专项(2010DFA32810);中-比合作项目(PICS-handong)资助

摘　　要：研究了小麦-油菜间作和田间施用水杨酸甲酯(MeSA)下麦长管蚜及其主要天敌种群的空间分布.结果表明:小麦-油菜间作和施用MeSA使麦长管蚜的空间分布发生改变.间作和施用MeSA均能降低麦长管蚜的聚集程度,并使之趋于均匀分布,二者同时作用效果更显著.小麦不同生育期天敌种群空间分布的变化趋势与麦长管蚜种群基本一致.研究结果可为确立麦长管蚜及其天敌的田间调查抽样方法和预测预报等提供依据.A field investigation was conducted on the spatial distributions of Sitobion avenae and its main natural enemies under wheat-oilseed rape intercropping and methyl salicylate application.With the development of wheat plant,an alternation from aggregation to uniform was observed in the spatial distribution of S.avenae under the intercropping and methyl salicylate application,being more obvious under the interaction of the two practices.The spatial distribution of S.avenae natural enemies was in accordance with that of the aphid.These results could be used for the reference of sampling investigation and forecast of wheat aphid and its natural enemies in field.

关 键 词：小麦-油菜间作 水杨酸甲酯 麦长管蚜 自然天敌 分布型 

分 类 号：S435.122[农业科学—农业昆虫与害虫防治] S186[农业科学—植物保护]