摘要
为了有效地控制小麦粘虫的发生和危害，采用田间系统调查的方法对小麦粘虫的发生特点进行了调查，在此基础上进行了小麦粘虫综合治理技术和不同生物药剂对小麦粘虫幼虫的控制效果研究。结果表明：该虫在孝感市北部地区1年发生4～5代，以幼虫或蛹在麦田土中、稻桩和杂草堆等处越冬；第1代卵孵化盛期在3月下旬至4月上旬，为幼虫最重危害代。综合防治措施以农业防治和生态防治为主，重视保护和利用本地天敌，加强稻草把及糖醋诱剂诱杀成虫，推广使用生物药剂防治，控制使用化学防治的小麦粘虫综合治理策略。生物药剂对小麦粘虫幼虫的控制效果最好的是60 g/L乙基多杀菌素 SC 2000倍液，药后7 d校正防效达95．96％；其次是2．0％阿维菌素 EC 2000倍液，校正防效为95．12％；20％三唑磷 EC 1000倍液的持效性较差，校正防效仅为78．72％；其余3种生物药剂的校正防效均超过89％。
To effectively control the occurrence and hazard of the wheat armyworm,a field system investigation was conducted to explore the occurrence characteristics of wheat armyworm,and based on this the control effects of comprehensive treatment techniques and different biological insecticides.The results showed that this worn existed in the north of Xiaogan City for 4~5 generations,and passed the winter when it is in the generation of larva or insect pupa in wheat field soil,rice stub,a mass of weeds or other places.The first generation egg hatched in late March to early April,this generation of larvae was of the most hazard.Through the study on comprehensive treatment techniques of wheat armyworm,the authors put forward to control agricultural and ecological prevention,protection and pay much attention on local natural enemy,strengthen the straw and sweet and sour attractant for adults worms.At the same time,we should promote the use of bio-pesticides control,control strategy of integrated management of wheat armyworm use of chemical control.The 60g/L Spinetoram SC 1∶2000 was of the best control effect to wheat armyworm,the 7 d revised control effect was 95.96%,2.0% Avermectin EC 1∶2 000 took the second place,with revised control effect of 9 5 .1 2%;The corrected control efficiency of the other bio-pesticides were all more than 89%.The worst one was the 20% Triazophos EC 1∶1000,which only has a corrected control efficiency about 78.12%.
出处
《贵州农业科学》
CAS
北大核心
2014年第1期94-97,共4页
Guizhou Agricultural Sciences
基金
湖北省科技厅计划项目"作物新品种保优高产栽培技术研究与示范"(2005AA201C54)
关键词
小麦粘虫
发生特点
生物药剂
药效试验
综合治理
wheat armyworm
occurrence characteristics
bio-pesticides
efficiency experiment
comprehensive treatment technique
