【摘要】 本文采取定树观察法,对柑桔园主要害虫消长动态进行了研究,结果表明,柑桔树春梢抽发期4-6月是害螨类、蚧类、粉虱类和蚜虫等主要害虫发生危害的高峰期,其周年消长动态:柑桔全爪螨(Panonychus citri Megregor)和柑桔始叶螨(Eotetranychnskankitus Ehara)呈现明显的"春季"(5月上、中旬)和"秋季"(8月下旬、9月上、中旬)2个为害高峰,矢尖蚧(Unaspis yanonensis Ku-wana)呈现明显的"初夏季"(5月下旬)为害高峰,柑桔粉虱(Dialeurodes citri Ashmead)和黑翅粉虱(Aleurocanthus spiniferas Quain-tac)呈现4个明显的为害高峰,4月中、下旬是为害的最高峰,桔蚜(Toxoptera citricide Kirkaldy)则呈现"春季"(4月下旬至5月上旬)为害高峰,柑桔潜叶蛾(Phyllocnistis citrella Stainton)呈现明显的"秋季"(8月下旬至9月下旬)为害高峰。更多还原

【Abstract】 In this paper,the fluctuation of predominant citrus pests populations in different ecological regions of Sichuan was studied with the observation method offixed trees.The result showed that April to June in citrus tree beginning of spring shoot was the peak period of citrus major pests occurrence and damage such as mites,scale insects,Aleyrodidae and Toxoptera.There were two peak periods of Panonychus citri Megregor and Eotetranychns kankitus Ehara,one was first and middle ten days of May,another was last ten days of August,first and middle ten days of September.There was a peak period of Unaspis yanonensis Kuwana,last ten days of May.There were four peak periods of Dialeurodes citri Ashmead and Aleurocanthus spiniferas Quaintace,middle and last ten days of April.There were two peak periods of Toxoptera citricide Kirkaldy,last ten days of April and first ten days of May.There was a peak period of Phyllocnistis citrella Stainton from last ten days of August to last ten days of September.更多还原