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通过大量野外调查和室内鉴定,明确河北省沧州地区枣叶螨的优势种是截形叶螨(TetranychustruncatusEhara)。查清了该螨主要以卵在树干皮缝中越冬,春季3月初孵化出蛰,初孵幼螨先转移到地面杂草上取食繁殖,待4月下旬枣树发芽后,再向枣树转移为害。测定了该螨的耐饥能力和爬行速度。提出了冬季刮除树皮、早春清除林间杂草及树干涂粘虫胶环和生态调控防治技术,经应用效果良好。
Through extensive field investigation and indoor appraisal, it is clear that Tetranychus truncatus Ehara is the dominant species of date spider mites in Cangzhou, Hebei Province. It was found that the mite was predominantly wintering in the stitches of tree trunks and hatched in early spring in early March. The newly hatched larvae were transferred to ground weeds for feeding and breeding. After the jujube germinated in late April, Transfer damage. The hunger resistance and creeping speed of the mite were determined. Proposed in winter scraping the bark, early spring to clear forest weeds and trunk glueworm glue ring and ecological regulation and control technology, the application effect is good.