新疆小海子垦区枣树主要害虫危害特征及发生规律研究

Research on Occurrence Character, Increasing and Decreasing of the Main Insects on the Jujube Trees Grown in Xiaohaizi Reclamation Area of Xinjiang

以"骏枣"为试材,采用定点定期田间调查的方法,研究了新疆小海子垦区枣树主要害虫的危害特征及其田间发生规律。结果表明:小海子垦区枣树主要害虫有枣瘿蚊、截形叶螨、枣球蜡蚧和香梨优斑螟等。枣瘿蚊1a发生4代,主要以幼虫为害枣树的叶片、花蕾和幼果;截形叶螨危害枣树的叶片和花芽,7月上旬至8月中旬大量繁殖,猖獗为害;枣球蜡蚧1a发生1代,危害枣树枝、梢、叶及果实;香梨优斑螟1a发生3代,主要以幼虫蛀食果树主干、主枝的韧皮部。

Taking Ziziphus Jujuba cv.Junzao as material,the population dynamic and occurrence character of major pests on the jujube tree in Xiaohaizi Reclamation Area of Xinjiang was monitored via method of fixed place and fixed period field investigation.The results showed that through this investigation the main insects such as Dasineura datifolia Jiang,Tetranychus truncatus Ehara,Eulecanium gigantean Shinji and Euzophera pyriella Yang were found on the trees.Dasineura datifolia Jiang had four generations a year.Leaves,flower buds and young fruits mainly were damaged by the larva of Dasineura datifolia Jiang.From early July to middle August Tetranychus truncatus Ehara reproduced rapidly and seriously damaged leaves and buds.Eulecanium gigantean Shinji occurred once a year and caused damage to the branch,tip leaves and fruit.Euzophera pyriella Yang had three generations a year and its larva can make the phloem of trunk and bough corroded.