木瓜秀粉蚧在海南扩散规律的地统计学分析  

Geostatistical Analysis of Dispersion of Papaya Mealybugs(Paracoccus marginatus) in Hainan

作　　者：卢辉[1] 唐继洪[1] 吕宝乾[1] 卢芙萍[1] 何杏[1] 陈琪 LU Hui;TANG Jihong;LV Baoqian;LU Fuping;HE Xing;CHEN Qi(Environment and Plant Protection Institute,China Academy of Tropical Agriculture Sciences/Key Laboratory of Integrated Pest Management on Tropical Grops,Ministry of Agriculture and Rural Affairs/Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions,Hainan Province/Key Laboratory of Tropical Agricultural Pest Monitoring and Control,Haikou,Hainan 571101)

机构地区：[1]中国热带农业科学院环境与植物保护研究所/农业农村部热带作物有害生物综合治理重点实验室/海南省南繁生物安全与分子育种重点实验室/海南省热带农业有害生物监测与控制重点实验室,海南海口571101

出　　处：《热带农业科学》2020年第3期82-86,共5页Chinese Journal of Tropical Agriculture

基　　金：海南省自然科学基金面上项目(No.317231);中国热带农业科学院基本科研业务费专项(No.1630042019016);一带一路热带国家农业资源联合调查与开发评价项目(No.BARTP-08-LBQ)。

摘　　要：为有效控制木瓜秀粉蚧的扩散蔓延,利用地统计学方法分析木瓜秀粉蚧在海南木瓜园的空间分布规律。结果表明:木瓜秀粉蚧虫口密度高的果园,主要分布于叶片下层(成虫5头/株、幼虫4.4头/株),显著高于其它的冠层;虫口密度低的果园,叶片下层(成虫1.5头/株、幼虫1.3头/株)和中层(成虫0.9头/株、幼虫1.2头/株)显著高于顶层和果树上的虫口;5种聚集度指标分析证明,木瓜秀粉蚧在海南木瓜园呈聚集分布,聚集度随着种群密度的升高而减少;木瓜秀粉蚧平均密度4.6头/株的果园存在扩散作用,而密度1.6头/株的果园粉蚧种群仅在一个方位集中。研究结果表明,木瓜秀粉蚧在海南木瓜园的扩散分布受其种群密度影响。The spatial distribution of papaya mealybugs(Paracoccus marginatus) in Hainan Province,China was analyzed by using geostatistical analysis to effectively control the spread of P. marginatus infesting papaya plants in Hainan. The geostatistical analysis showed the mealybugs were mainly distributed in the lower layer of leaves of papaya(5 adults/plant, 4.4 larvae/plant), and had a significantly higher population density than those in other leaf layers of the papaya trees in the papaya orchard with the high population density of the mealybugs. The mealybugs had a significantly higher population density in the lower layer(1.5 adults/tree, 1.3 larvae/tree) and the middle layer(0.9 adults/tree, 1.2 larvae/tree) of leaves than in the top layer of leaves and on the fruit in the papaya orchard with the low population density. The mealy bugs had 5 aggregation indexes in distribution in Hainan, which indicated that the aggregation of the mealybugs was decreased with the increased population density of the mealybugs. Dispersion of the mealybugs happened when there were 4.6 mealybugs/tree in the papaya orchards, whereas the mealybug population was concentrated in only one direction when there were 1.6 mealybugs/tree in the papaya orchard. The results showed that the mealybug dispersion in the papaya orchards was affected by the mealybug population density in the papaya trees in Hainan.

关 键 词：木瓜秀粉蚧 扩散规律 海南 地统计学分析 

分 类 号：S433.5[农业科学—农业昆虫与害虫防治]