| 梨上瘿螨田间发生与消长规律研究 |
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| 引用本文： | 魏列新,陈应武,梁巧兰,张新虎.梨上瘿螨田间发生与消长规律研究[J].甘肃林业科技,2007,32(1):31-33. |
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| 作者姓名： | 魏列新 陈应武 梁巧兰 张新虎 |
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| 作者单位： | 甘肃农业大学草业学院昆虫学系,甘肃,兰州,730070 |
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| 摘 要： | 梨上瘿螨在甘肃省陇西县梨树上发生普遍,主要以成螨为害嫩叶,受害叶片明显皱缩,叶肉细胞组织结构发生病变。调查发现梨上瘿螨主要以成螨在树皮裂缝、芽鳞下越冬,分别占越冬种群总量的41.79%和37.20%;其次,有少量在介壳虫的死介壳下和剪锯口越冬。梨上瘿螨于4月下旬开始为害,为害高峰期分别在6月上旬和9月上旬,10月瘿螨的种群数量逐渐降低,并寻找越冬场所越冬。
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| 关 键 词： | 梨上瘿螨 为害特点 越冬场所 田间消长规律 |
| 文章编号： | 1006-0960（2007）01-0031-03 |
| 收稿时间： | 2006-11-02 |
| 修稿时间： | 2006年11月2日 |
Study on Occurrence and Decline Law of Epitrimerus pyri (Nalepa) in Field |
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| WEI Lie-xin,CHEN Ying-wu,LIANG Qiao-lan,ZHANG Xin-hu.Study on Occurrence and Decline Law of Epitrimerus pyri (Nalepa) in Field[J].Journal of Gansu Forestry Science and Technology,2007,32(1):31-33. |
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| Authors: | WEI Lie-xin CHEN Ying-wu LIANG Qiao-lan ZHANG Xin-hu |
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| Institution: | Department of Entomology,College of Grassland Science of Gansu Agriculture University, Lanzhou 730070, China |
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| Abstract: | By field investigation,the result showed that Epitrimerus pyri(Nalepa) occurred widely in pear trees in Longxi county,Gansu.The tender leaves were harmed mainly by adult Epitrimerus pyri.And the injured leaves obviously crinkled and mesophyll cell tissue pathologically changed.Bark crack and bud scale were major over-winter places for adult Epitrimerus pyri and theirs overwinter population were 41.79% and 37.20% respectively.The second places were shell of some dead scale insect and injured cut.Epitrimerus pyri began to damage in late April.Its damaged peak period was in early June and early September.In October its population density gradually reduced and began to overwinter. |
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| Keywords: | Epitrimerus pyri(Nalepa) characteristics of damage overwinter site occurrence and decline law in field |
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