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【目的】摸清新疆喀什地区截形叶螨(Tetranychus truncatus Ehara)在建园早期枣园的发生规律,为间作模式枣园害螨的防控提供依据。【方法】在选取枣园亚系统(枣农间作枣园)的样地中,棋盘方式选择枣树样本进行标记,采用定点定期的系统调查截形叶螨的种群数量。【结果】喀什地区截形叶螨在枣树上4月下旬出蛰活动,5月上旬开始为害,8月下旬~9月上旬种群数量达年高峰,10月中旬数量逐渐减少,开始越冬。越冬螨随着离枣树距离的扩大,越冬叶螨数量也逐渐在减少。距枣树树干30 cm范围内越冬害螨量达83.64%,害螨在落叶、树干基部小土块(5~10 cm)下越冬最多,分别为39.80%和28.91%,害螨在枣树上多分布于东、西朝阳的部位。【结论】建园早期间作模式枣园截形叶螨的越冬数量随着离枣树树干距离的扩大逐渐减少,主要距离树干30 cm的范围的落叶和土块下越冬,枣树上的截形叶螨种群数量动态5月上旬化学防治截形叶螨危害初期和10月中旬清理枣树30 cm范围内的落叶、塑料残膜和拍碎土块是压低枣园内螨量的有效措施。
【Objective】 The objective of this study was to find out the occurrence regularity of Tetranychus truncatus Ehara in early jujube orchard in Kashgar region of Xinjiang and to provide the basis for the prevention and control of the harmful mite in jujube orchards in intercropping. 【Method】 The jujube tree samples were selected for selection in the sample plots of Zaoyuan sub-system (Zaoyuan for Jujube orchard), and the population of Tetranychus urticae was systematically investigated by the fixed-point system. 【Result】 Tetranychus urticae in the Kashgar region exuded insects on the jujube tree in late April and began to damarize in early May. The population peaked from late August to early September reached its peak year, and gradually decreased in mid-October and began to wintering. Overwintering mites with the distance from the jujube tree expansion, the number of overwintering spider mites also gradually reduced. The amount of wintering pest mites reached 83.64% within 30 cm of the trunk of jujube tree, and the pest mites overwintered at fallen leaves and small soil blocks (5 ~ 10 cm) at the base of tree trunks, accounting for 39.80% and 28.91% respectively. More distributed in the East, West Chaoyang parts. 【Conclusion】 The early winter intercropping patterns of jujube orchards truncated spider mite overwintering gradually decrease with the distance from trunk to jujube tree. Spider mite population dynamics early May Chemical control of Truncatus Tetranychus M and early mid-October clearing jujube trees within 30 cm of deciduous leaves, plastic film and slashing clods is to reduce the amount of effective measures Zaoyuan mites.