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陕西茶区小贯小绿叶蝉种群动态及寄主抗虫性

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研究危害陕西茶区主要茶树品种(紫阳、福鼎大白、南疆一号)的小贯小绿叶蝉(Empoasca onukii Matsuda)与天敌蜘蛛种群动态变化及其寄主抗虫性,为开展小贯小绿叶蝉的综合治理奠定理论基础.于 2011年8月15日-10月20日和2012年3月12日-10月13日,调查小贯小绿叶蝉和天敌蜘蛛在不同品种各分层上的田间数量动态.结果表明:危害各主要茶树品种的小贯小绿叶蝉成、若虫发生动态均呈单峰型,7月中旬虫口开始快速上升,7月底达到峰值,主要分布于各品种茶树的上层,中、下层较少;各品种茶树的抗虫性存在明显差异,其中紫阳和福鼎大白对小贯小绿叶蝉的抗性最优,南疆一号品种的抗性最差;天敌蜘蛛的种群数量与小贯小绿叶蝉种群数量在紫阳(R=0.716,P<0.001)、福鼎大白(R=0.476,P-0.007)和南疆一号上(R=0.652,P<0.001)均呈正相关.因此,小贯小绿叶蝉在陕西茶区的种群动态呈单峰型,紫阳和福鼎大白品种对其抗性优良,天敌蜘蛛对其有显著跟随现象.
Population Dynamics of Empoasca onukii and Host Resistance in Tea Production Region in Shaanxi Province
Population dynamics of the small green leafhopper Empoasca onukii Matsuda and spider (the natural enemy of the leafhopper) in Shaanxi tea region and also the resistance to pest of three main tea varieties were evaluated to provide a theoretical reference for the integrated management of E.onukii.The population dynamics of E.onukii and spiders at different layer in three tea varieties were investigated from August 15 to October 20 in 2011 and from March 12 to October 13 in 2012,respectively.The field investigation results showed that the occurrence regularity of adults and nymphs of E.onukii on the tea varieties were single-peak type,the population quantity increased rapidly from mid-July,the annual population of E.onukii reached the peak at the end of July.Further distribution analysis of the population of E.onukii on three kinds of tea varieties showed that the small green leafhopper distributed more at upper layer but less at middle layer and bottom layer.The Fuding and Ziyang varieties possess higher resistance to the small green leafhopper than Nanjiang variety.The population quantity of E.onukii and spiders were positively correlated in Ziyang (R=0.716,P<0.001),Fuding (R=0.476,P=0.007) and Nanjiang (R=0.652,P<0.001).The occurrence regularity of Empoasca onukii was single-peak type in Shaanxi tea region,Ziyang and Fuding varieties had excellent resistance to pests,spiders had obvious following effect to the small green leafhopper.

Empoasca onukii MatsudaPopulation dynamicsTea varietiesResistanceSpider

王玉春、肖斌、谢奇、秦道正

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植保资源与病虫害综合治理教育部重点实验室,西北农林科技大学昆虫博物馆,陕西杨凌712100

西北农林科技大学园艺学院,陕西杨凌712100

宝鸡文理学院体育系,陕西宝鸡 721013

小贯小绿叶蝉 种群动态 茶树品种 抗虫性 蜘蛛

陕西茶区大贯小绿叶蝉发生规律及无公害防治技术研究

2010JM3009

2013

西北农业学报
西北农林科技大学,甘肃,宁夏,青海,新疆农(林)业科学院及青海,新疆畜牧(兽医)科学院及新疆农垦科学院

西北农业学报

CSTPCDCSCD北大核心
影响因子:0.629
ISSN:1004-1389
年,卷(期):2013.22(7)
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