石榴园西花蓟马种群动态及其与气象因素的关系  

Population dynamics of Frankliniella occidentalis(Thysanoptera:Thripidae) along with analysis on the meteorological factors influencing the population in pomegranate orchards

作　　者：刘凌 陈斌[1] 李正跃[1] 杨仕生 孙文 

机构地区：[1]生物多样性与病虫害控制教育部重点实验室,云南农业大学植物保护学院,昆明650201 [2]云南省建水县农业科学研究所,建水654300

出　　处：《生态学报》2011年第5期1356-1363,共8页Acta Ecologica Sinica

基　　金：国家“973”重点基础研究发展计划资助项目(2006CB100204);云南省科技攻关项目(2006SG23)

摘　　要：2007—2008年,对云南省建水石榴园西花蓟马种群动态进行了系统调查,并采用回归分析(逐步回归分析、通径分析)、主成分分析及灰色系统分析就气象因子对该虫种群动态的影响进行了系统分析。结果表明,西花蓟马在建水石榴园常年发生,冬季较低,夏季最高,成虫全年种群消长呈单峰型,高峰期为5月份。相关性分析结果表明,西花蓟马种群数量与月相对湿度间呈极显著正相关性(P<0.01),与月均气温和月最低气温间呈显著正相关性(P<0.05),与月最高气温、月均降雨量和月均蒸发量间无相关性(P>0.05)。回归分析结果表明,石榴园西花蓟马种群动态的决定因子中影响最大的气象因素是月最低气温,而月均气温和月相对湿度是影响种群数量变动的主要因素。主成分分析表明,月最低气温是主要成分,其累积方差贡献率达73.03%。灰色系统分析结果表明,影响石榴园6种蓟马种群动态最关键的因子是月相对湿度;年度间影响最大的是年总降雨量;石榴花期各蓟马的种群数量与气象因素间关联度最大的是月最低温;果期各种蓟马的种群数量与气象因素间关联度最大的是月均降雨量。The western flower thrips Frankliniella occidentalis（Pergande） has been a major pest of agricultural and hotricultural crops in fields and greenhouses worldwide.Since its found in Beijing Municipality of China in 2003,and now it is the serious pest in pomegranate tree of Jianshui County,Yunnan Province in recent years.The population dynamics of the F.occidentalis in pomegranate orchards was surveyed by using gathering thrips in different positions of pomegranate including flower,leaf,shoot and young fruit and using blue sticky cards from 2007 to 2008 in Jianshui County,Yunnan Province.The relationship between meteorological factors including monthly mean temperature,monthly maximum temperature,monthly minimum temperature,monthly rainfall,monthly relative humidity（RH） and monthly evaporation and population dynamics were analyzed using the regression analysis（stepwise regression analysis and path analysis）,the principal component analysis and the grey system analysis.The results indicated that during the study periods,adults of the F.occidentalis occurred throughout the year,the lowest population was in winter season and the highest population was in the summer season in each year.The population dynamics was single-peaked,the most serious injury stage was from March to July,with the peak in May.The correlativity results showed that the population of F.occidentalis was significantly positively corrlelated to monthly RH（P0.01）,and it was positively corrleated to monthly mean temperature,monthly minimum temperature（P0.05）,followed the regression equation as Y=-131.15＋0.04 X1＋22.71 X3-15.76 X5,（P=0.002）,the multiple realtice coefficient was 0.875,the X1,X3 and X5 was monthly mean temperature,monthly minimum temperature and monthly RH.No significant correlation was found between the population of F.occidentalis and monthly maximum temperature,monthly rainfall amounts,monthly evaporation capacity（P0.05）.Use the stepwise regression analysis,path analysis and decision coefficient analysis on

关 键 词：西花蓟马 种群动态 气象因素 石榴 

分 类 号：S436.65[农业科学—农业昆虫与害虫防治]