番茄潜叶蛾幼虫和卵在新疆大棚番茄的空间分布型及理论抽样数  

Spatial distribution patterns and theoretical sampling of Tuta absoluta(Meyrick)of larvae and eggs in a tomato-producing greenhouse in Xinjiang,China

作　　者：阿米热·牙生江 付开赟 阿地力·沙塔尔 丁新华[2] 何江[2] 吐尔逊·阿合买提[2] 王俊 李晓维 郭文超[5] YASHENGJIANG·Amire+;FU Kaiyun+;SHATAER·Adili;DING Xinhua;HE Jiang;AHMAT·Tursum;WANG Jun;LI Xiaowei;GUO Wenchao(College of Forestry and Horticulture,Xinjiang Agricultural University,Urumqi,Xinjiang 830052,China;Institute of Plant Protection,Xinjiang Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management for Desertification Oasis in Northwest China,Ministry of Agriculture,Urumqi,Xinjiang 830091,China;Plant Protection Station,Department of Agricutural and Rural Affiars of Xinjiang,Urumqi,Xinjiang 830003,China;Institute of Plant Protection and Microbiology Application,Zhejiang Academy of Agricultural Sciences,Hangzhou,Zhejiang 310021,China;Institute of Microbiology Application,Xinjiang Academy of Agricultural Sciences,Urumqi,Xinjiang 830091,China)

机构地区：[1]新疆农业大学林学与园艺学院,新疆乌鲁木齐830052 [2]新疆农业科学院植物保护研究所/农业部西北荒漠化绿洲作物有害生物综合治理重点实验室,新疆乌鲁木齐830091 [3]新疆维吾尔自治区农业农村厅植物保护站,新疆乌鲁木齐830003 [4]浙江农业科学院植物保护与微生物研究所,浙江杭州310021 [5]新疆农业科学院微生物应用研究所,新疆乌鲁木齐830091

出　　处：《生物安全学报》2021年第2期102-109,共8页Journal of biosafety

基　　金：自治区创新环境(人才、基地)建设专项(2018XS30);新疆农业科学院科技创新重点培育专项(xjkcpy-002)。

摘　　要：【目的】明确新疆新发外来入侵生物番茄潜叶蛾幼虫和卵在不同种群密度下的垂直分布、空间分布型和理论抽样数,探索田间易观察的危害症状和幼虫密度的关系,为田间取样和调查提供理论指导。【方法】在察布查尔县连续调查3个大棚同一品种京番502杂交一代上的番茄潜叶蛾的不同种群密度,利用聚集度指标及Iwao回归分析,计算并分析了番茄潜叶蛾卵和幼虫在不同种群密度下的空间分布型、垂直分布和理论抽样数,分析危害叶片数、虫道长度和虫道数与幼虫密度的动态关系。【结果】计算并统计番茄潜叶蛾幼虫和卵的空间分布聚集度指标的均值m、扩散系数C、扩散型指数I、负二项分布值K、平均拥挤度m*、聚块指数m*/m、扩散指数CA和种群聚集均数λ。番茄潜叶蛾卵主要集中在上部,占比43.9%~100%。幼虫主要集中在下部,占比53.3%~100%。番茄潜叶蛾幼虫数与虫道数、虫道长度或为害叶片数的比值随为害加剧呈动态变化。番茄潜叶蛾幼虫和卵Iwao直线回归方程拟合公式为m*=1.9114+1.2055m(R^(2)=0.9703)和m*=0.0536+1.4147m(R^(2)=0.9014)。根据空间分布型参数,在D=0.1、0.2和0.3时,幼虫的理论抽样数模型分别为n=1118.4/x+78.9、n=279.6/x+19.7、n=124.3/x+8.8,卵的理论抽样数模型分别为n=404.8/x+159.3、n=101.2/x+39.8、n=45.0/x+17.7,该模型适用于不同虫口密度下的田间抽样。【结论】在京番502杂交一代上,番茄潜叶蛾幼虫为m=0.6头·株^(-1)以上,卵在达到密度最大值前,均呈聚集性分布。番茄潜叶蛾成虫偏好在幼嫩的叶片产卵,随植株被害加剧该偏好略有减弱。当番茄潜叶蛾幼虫的虫口密度为10和30头·株^(-1)时,建议分别取样50和30株;当卵量为10和30粒·株^(-1)时,分别取样50和45株。【Aim】To clarify the vertical distribution,spatial distribution,and theoretical sampling of larvae and eggs of the newly invasive alien species Tuta absoluta in Xinjiang and to explore the relationship between larval density and easily observable patterns on tomato plants in greenhouses.【Method】Through investigations of three different densities of T.absoluta in uncovered greenhouses planted with tomatoes(Jingfan 502 Hybrid 1)in Chabuchar County,aggregation indices and Iwao regression formulas were calculated,and the dynamic patterns of larval density and damaged leaves,tunnel length,and number of tunnels were analyzed.【Result】The average number(m),diffusion coefficient(C),I index,Mosai c distribution value(K),mean crowded degree(m*),CA index,aggregation index(m*/m),and population aggregation value(λ)were calculated.T.absoluta eggs were mainly aggregated at the top(43.9%^(-1)00%occupied)of the plants.Larvae were mainly aggregated at the bottom of the plants(53.3%^(-1)00%occupied).The densities of larvae and damaged leaves,the lengths of tunnels,and the numbers of tunnels dynamically changed with each day.The linear regression formulae for larvae and eggs,as determined using Iwao′s method,were m*=1.9114+1.2055 m(R^(2)=0.9703)and m*=0.0536+1.4147m(R^(2)=0.9014),respectively.According to the indices and errors of 0.1,0.2,and 0.3,a theoretical sampling formula was constructed.Under D=0.1,0.2,and 0.3,the formulae for larvae were n=1118.4/x+78.9,n=279.6/x+19.7,and n=124.3/x+8.8,respectively,and the formulae for eggs were n=404.8/x+159.3,n=101.2/x+39.8,and n=45.0/x+17.7,respectively.【Conclusion】On Jingfan 502 Hybrid 1 tomato plants,the larvae and eggs of T.absoluta presented a high density,aggregate distribution.Adults of T.absoluta preferred to lay eggs on the top part of the plant and gradually moved to other parts as the host became damaged.When the density of larvae reached 10 and 30 larvae·plant^(-1),the suggested theoretical samplings were 50 and 30 plants,respectively,and when the density of eg

关 键 词：番茄潜叶蛾 幼虫 卵 空间分布型 垂直分布 理论抽样数 

分 类 号：S436.412.2[农业科学—农业昆虫与害虫防治]