摘要
通过对淮北地区夏玉米田节肢动物群落系统调查,显示该地区夏玉米田的主要害虫为玉米蚜、玉米叶甲、朱砂叶螨,主要天敌为草间小黑蛛、异色瓢虫、八斑球腹蛛、中华草蛉、龟纹瓢虫、微小花蝽、青翅隐翅虫、华姬猎蝽等。灰色度系统分析表明,与玉米蚜关联度较高的是中华草蛉(0.9432),与朱砂叶螨的关联度高的是华姬猎蝽(0.9019),与玉米叶甲的关联度高的是草间小黑蛛(0.9448)。对害虫和天敌的优势种群进行生态位分析结果显示:玉米叶甲的时间生态位宽度最高,为3.4066,时间分布较宽;朱砂叶螨的时间生态位宽度最低,为2.1081,在时间上分布较为集中;中华草蛉和玉米蚜生态位重叠度较高,表明它们发生时间比较吻合,同步性较高;中华草蛉和玉米蚜的生态位相似性比例最高,为0.9929,表明中华草蛉和玉米蚜对时间资源的利用基本一致。通过分析表明,淮北地区夏玉米田的捕食性节肢动物对这三种优势害虫有着较为稳定、持续的控制作用。
We systematic investigated of the summer maize pests in the North of Anhui Province.The results of mathematical analys showed that the Rhopalosiphum maidis,Colaphellus spp.and Tetranychus cinnabarinus were the most important pests,and the most important predators were Erigonidium graminicolum,Harmonia axyridis,Theridion octomacutatum,Chrysoperla sinica,Propylea japonica,Orius similis,Paederus fuscipes,Nabis sinoferus.By the grey correlative degree analysis we found that R.maidis and C.sinica had the highest correlation,and the same as T.cinnabarinus and N.sinoferus,C.spp and E.graminicolum.The temporal niche breadth value of C.spp.was maximum and the minimum was C.sinica,and the temporal niche values of them were 2.4856 and 2.1081.The temporal niche overlap value of C.sinica between dominant predatory enemies and R.maidis was maximum,that showed the synchronization of their were high.The temporal niche similarity ratio of C.sinica and R.maidis was the largest,the number was 0.9929,so they had a similar time of occurrence.The results showed that predators can be stable and sustained control of the three main pests in corn fields in the North of Anhui Province.
出处
《中国农学通报》
CSCD
北大核心
2010年第15期314-318,共5页
Chinese Agricultural Science Bulletin
基金
安徽省科技攻关项目"玉米重大病虫害综合防治关键技术研究与示范"(8010302172)
关键词
夏玉米
害虫
天敌
灰色度系统分析
时间生态位
summer maize
pests
predators
grey correlative degree analysis
temporal niche analysis
