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介壳虫是近年来在和田地区严重危害果树的主要害虫之一。常见的种类主要有糖槭蚧、枣大球蚧、圆梨蚧。糖槭蚧、枣大球蚧在墨玉县一年发生1代,以2～3龄若虫在枝条上或隐蔽的树皮裂缝处越冬。梨圆蚧一年发生2～3代,以1～2龄若虫在枝干上越冬。介壳虫的危害盛期,第一次为越冬若虫自树液流动至成虫产卵期(或产仔),此时为化学防治关键适期,最佳适期为3月下旬～4月初。第二次危害盛期为小若虫孵化(或产仔)到若虫进入越冬,此时最佳化防适期为6月5～25日。该虫防治应采用综合防治措施,尽量减少药剂防治次数。
Scale insects are one of the major pests that have been detrimental to fruit trees in the Wada area in recent years. Common species are mainly sugar maple scale, jujube ball scale, round pear scale. Sugar maple scale, jujube ball scale occurred in the Mexican County one generation a year to 2 to 3 instar nymphs in the branches or hidden bark cracks at the winter. Pear scale insects occur 2 to 3 generations a year, with 1 to 2 instar nymphs in the branches of the winter. For the first time, the overwintering nymphs flow from the sap to the spawning period (or litter size) of the adults, which is the key period for chemical prevention and treatment. The best malaria period is from late March to early April. The second damaging period of small nymphs hatching (or litter size) to nymphs into the winter, then the best anti-adapted to June 5 to 25. The pest control should be used comprehensive prevention and treatment measures to minimize the number of drug control.