截形叶螨生物学特性的研究

截形叶螨ＴｅｔｒａｎｙｃｈｕｓｔｒｕｎｃａｔｕｓＥｈａｒａ在沧州枣区一年发生１３代，以卵在枣树树干皮缝中越冬，翌年春季（３月份）越冬卵开始孵化，初孵幼螨首先迁移到地面杂草上取食繁殖，４月下旬枣树发芽时陆续向枣树转移危害，在对其生物学特性进行系统研究的基础上，找到了该螨生活史中的薄弱环节，提出了冬季刮树皮，早春除草和在该螨上树前在树干涂粘虫胶环的无公害防治技术。

Study on the bionomics of Tetranychus truncatus Ehara

Tetranychus truncatus has 13 generations a year in Changzhou and overwinters as eggs in the bark crevices on jujube trunks.In the spring(March)of next year,the eggs begin to hatch.The young mites first migrate to the ground to feed on weeds and propagate,then in April they move to harm jujubes while jujubes sprout.The harmless techniques for the control of the mite are to scrape barks in winter,weed in early spring and smear gum rings on trunks before mites climb up trees.