河南省沿黄稻区稻象虫发生规律及防治技术研究  

The Emergence Law of Rice Weevil and Its Control Measures in Paddy Rice Area along the Yellow River in Henan Province

作　　者：张栩 雷晓天 

机构地区：[1]新乡市农科所

出　　处：《河南职业技术师范学院学报》1992年第1期29-34,共6页Journal of Henan Vocation-Technical Teachers College

摘　　要：3年研究结果表明:沿黄稻区稻象虫1年发生1代,仅以幼虫在土中越冬.春季越冬幼虫化蛹羽化,稻田插秧后产卵危害,孵化幼虫沿稻茎入土危害稻须根.稻象虫发生程度与土质、耕作栽培方式等因素有关,沙壤土稻田重于粘土稻田,单季稻田重于麦稻轮作田,秋季免耕田重于秋耕田.成虫羽化后在土中蛰留8～9d,出土时性已发育成熟.成虫早晚活动.具有假死性,有一定飞翔能力和趋光性.稻象虫防治应以农业防治为基础,配合药剂防治.具体措施:提倡秋耕种麦;水稻插秧时多耕多耙,人工打捞泥水中上浮成虫集中消灭;插秧后1周用3% 呋喃丹G1.5～2.0kg/mu,拌细土撒施或40%甲基异硫磷Ec75ml/mu,兑水喷雾,防效显著.The results obtained during years have shown that in the rice-grown area along the Yellow River, the rice weevie emerged once a year and survived winter as larva in the soil.In spring the larva became pupa and emerged and then began to lay eggs after transplanting seedling;thus the incubated pupas entered the earth along the stem and damaged the hair root.The emergence of weevil is related to some factors such as soil, farming mode, in sandy soil the damage degree being heavier than in clay loam, in single-cropping fields heavier than in wheat-rice rotation fields and in autumnal zero tillage fields heavier than in autumnal tillage fields.The imagoes staged in the soil for 8~9 dags after they appeared above the earth and they reached sex mature stage.The adult weevils were characterized by mimic death, phototaxis and certain ability to fly.The control of the pest should be based on the farming measures and be accompanied by chemicals.The effective measures are reconmmanded as follows, sowing wheat after autumnal tillage, careful tillage and harrowing when transplanting, killing the imagoes in the water and sludge; broadcasting dust-mixed 3% Carbofuran G 1.5~2.0 kg/mu upon the plants a week later after transplanting seedling or spraying water-mixed 40% Isofenphos methyl EC 75ml/mu.

关 键 词：稻象虫 发生规律 防治技术 沿黄稻区 河南 农业防治 药剂防治 

分 类 号：S435.112[农业科学—农业昆虫与害虫防治]