香梨绵粉蚧种群消长动态及防治药剂的筛选  

Population Dynamics of Phenacoccus mespili(Geoffroy) in Korla Fragrant Pear and Selection of Insecticides

作　　者：张萍[1] 王秀琴[2] 薛根生[1] 孙志红[1] 王岩[1] 

机构地区：[1]新疆生产建设兵团农二师农科所,新疆库尔勒841000 [2]新疆生产建设兵团农二师29团园林工作站,新疆库尔勒841005

出　　处：《新疆农业科学》2013年第4期642-647,共6页Xinjiang Agricultural Sciences

基　　金：新疆生产建设兵团农二师科技项目(2010NYGG11)

摘　　要：【目的】探明香梨绵粉蚧田间种群消长动态,为有效防治该虫提供理论依据。【方法】采用定点定时系统调查方法、开展田间及室内药剂筛选试验。【结果】香梨绵粉蚧从3月下旬即开始为害,一直持续到10月中旬。卵的3个高峰期则分别为5月上中旬、7月上旬和9月上旬;若虫全年有4个危害高峰期分别为3月下旬～4月下旬、6月、7月中旬～8月中旬以及9月底～10月中旬;成虫有3个发生高峰期,分别为4月下旬～5月上旬、6月下旬～7月上旬和8月下旬～9月上旬。使用3种有效防治药剂480 g/L毒死蜱EC、40%杀扑磷EC和20%啶虫脒SL防治效果较好,10 d的防效分别为96.68%、91.17%和86.61%。【结论】库尔勒香梨绵粉蚧1年发生3代,田间种群形成4个危害高峰,并筛选出3种有效防治药剂。[ Objective ] The present study aims to investigate the opulation dynamics of Phenacoccus mespili （Geoffroy） in Korla fragrant pears in order to provide basis for controlling the pest. [ Method] A systematic research on the definite place and time of this pest was conducted, and insecticide was screened in field and indoor. [Result]Phenacoccus mespili （Geoffroy） damaged pears from late March to mid- October. The egg had 3 peak occurrence periods in one year, that is, in the early or mid - May, early July and early September, respectively. The nymph had 4 peak occurrence periods throughout the year, from the late March to late April, June, from the mid - July to mid - August and from the late September to mid - October, respectively. The adult had 3 peak occurrence periods, from the late April to early May, from the late June to early July and from the late August to early September. By insecticide screening, the control effect of 40% Methidathion EC, 480 g/L Chlorpyrifos EC and 20% Acetamipid SL were better, and the control effect was 96.68%, 91.17% and 86.61% after 10 d, respectively. [ Conclusion] The result shows that there are 3 generations and 4 peak occurrence periods per year in Korla area of Phenacoccus mespili. Three kinds of effective insecticides were selected for controlling the pest

关 键 词：梨绵粉蚧 种群消长动态 防治药剂筛选 

分 类 号：S436.612.2[农业科学—农业昆虫与害虫防治]