摘要
[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] To find out the occurrence and wintering migration law of the Tetranychus truncatus Ehara in the young jujube garden in Kashi region and provide the basis for the prevention and control of the intercropping jujube garden mites. [ Method ] In the selected jujube orchard plots （ intercropping jujube yard）, the checkerboard selection was used to mark the sample trees and the fixed -point regular systematic survey methodology was applied to investigate the numbers of the population. [ Results] The Tetranychus trun- catus Ehara in Kashi region began activities on the jujube in the late April and did damage to the trees in early May. From the late August to the early September, the number of the population reached the peak of the year and gradually reduced in the mid - October and then started wintering. With the expansion of distance between the jujube trees, the number of wintering spider mite would gradually reduced. Within 30 cm range, the a- mount of wintering mites was up to 83.64 percent, overwintering under the leaves and small clods with trunk base （5 -10 cm） covering respectively 39.80% and 28.91%, and they were mostly distributed in the west- ern and eastern sunny parts. [ Conclusion] The wintering numbers of the intereropping jujube garden Tetrany- chus truncatus gradually reduced as the distance from the jujube tree trunk expanded and they mainly spent the winter time under the dropped leaves and clods within the range 30 cm around the tree trunks, so the chemical control of the early hazards of the Tetranychus truncatus Ehara in the early May and cleaning up the fallen leav- es, plastic films and smashing clods within 30 cm range in the mid - October were the effective measures to re- duce the numbers of the mites.
出处
《新疆农业科学》
CAS
CSCD
北大核心
2014年第5期910-914,共5页
Xinjiang Agricultural Sciences
基金
新疆维吾尔自治区科技支疆项目(201191134)
国家"十一五"科技支撑计划(2009BADA4B02)
新疆农业科学院植物保护研究所青年基金
关键词
间作枣园
截形叶螨
发生规律
intercropping jujube garden
Tetranychus truncatus Ehara
migration law
