LI Jie-ping,ZHAO Zhang-wu,ZHOU Xu-ling.Occurrent Dynamic of Psylla chinensis in Haicheng Region and Field Efficacy of Four Insecticides Against This Pest[J].Northern Horticulture,2013,37(08):140-143.
辽宁海城梨木虱发生规律及杀虫剂的药效调查
- Title:
- Occurrent Dynamic of Psylla chinensis in Haicheng Region and Field Efficacy of Four Insecticides Against This Pest
- 文章编号:
- 1001-0009(2013)08-0140-04
- Keywords:
- Psylla chinensis; occurrent dynamic; insecticides; field efficacy
- 分类号:
- S 436.612.2+9
- 文献标志码:
- A
- 摘要:
- 以15 a生南果梨为试材,通过实地监测,研究比较了辽宁省海城地区梨老、幼果园内不同虫龄梨木虱数量的消长规律；并在田间梨木虱发生的高峰时期，选用4个重要且不同类型高效杀虫剂于喷施后第3、5、10天进行详细数据分析，比较不同杀虫剂在实际防治中的效果差异。结果表明：南果梨的生长期，梨木虱呈现明显的世代重叠现象，梨木虱经历约为5代，若虫历期14~15 d，约1个月1个高峰。1~3龄若虫高峰时间和虫口数分别为：5月14日467头，6月20日654头，7月18日403头，8月16日612头。4~5龄若虫在前期呈现每月1次高峰。梨树生长后期4~5龄若虫的数量下降。成虫始终保持在20头水平；幼树梨木虱数量明显多于老树；梨木虱防治效果最佳的杀虫剂为1.8%阿维菌素（2 000×）和1%苦参碱（1 000×）。
- Abstract:
- Taking 15 years old Nanguo pear as material,the growth and decline law of different instars of Psylla chinensis Yang in Haicheng region，Liaoning Province was studied and compared.Moreover，the field efficacy treated at peak period by four insecticides of high efficiency against P.chinensis 3，5 and 10 days after treated were separately investigated.The results showed that occurrence of P.chinensis about 5 generations a year，had obvious overlapping generations during the growing period of Nanguo pear.Nymph lasted 14~15 days with a peak around each month.The population size and peak occurred from 1st to 3rd instar were separately 475 nymphs on May 14th，403 nymphs on July 18th and 612 nymphs on August 16th.The nymphs from 4th to 5th instar occurred a peak each month at earlier stage and decreased in number at later stage.Adults always were maintained at around 20.Besides，the numbers of P.chinensis on young trees were much more than on old ones.Moreover，the results also showed that the control efficacy of this pest by 1.8% of avermectin (2 000×) and 1% of matrine (1 000×) were the best.
参考文献/References:
[1]张翠疃,徐国良,李大乱.梨树主要害虫-梨木虱的研究综述[J].华北农学,2003,18(院庆专辑):127-130. [2]吕朝军,韩巨才,刘慧平,等．苹果黄蚜对杀虫剂的敏感性变化及混配增效作用研究[J].山西农业大学学报,2005,25(1):25-26. [3]仇贵生,张平,张怀江,等.几种杀虫剂对梨木虱田间防治效果的评价[J].植物保护,2007,33(2)：121-122. [4]祝小祥,张莉丽,洪文英,等.阿维菌素·吡虫啉乳油对梨木虱防治效果评价[J].中国南方果树,2009,38(2):58-59.
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备注/Memo
第一作者简介：李结平（1983-），男，安徽宿松人，硕士，研究方向为农业昆虫与害虫防治。E-mail:ljp905@126.com.