摘要
油菜叶露尾甲Ｓｔｒｏｎｇｙｌｏｄｅｓｖａｒｉｅｇａｔｕｓ（Ｆａｉｒｍａｉｒｅ，１８９１）是油菜上发现的新害虫。１９９４～１９９７年的调查研究表明：该虫在甘肃省主要分布于大夏河和洮河流域，危害春油菜，以中、晚熟春油菜受害最重。成虫在叶片和嫩茎上取食叶肉而形成“月牙形”伤口和“半月形”的害状，卵产在“半月形”透明的表皮下；在蕾簇中取食花蕾或咬断蕾梗而形成“秃梗”症状，且以食害花蕾为主。幼虫潜叶取食叶肉，形成不规则块状“亮泡”害状。在模拟试验条件下，以成虫在土内越冬。在甘肃临夏１年发生１～２代，主要以越冬代成虫和１代幼虫造成危害。室内变温条件下（平均１７．５℃）饲养表明，从卵发育至成虫需３２～４２ｄ。成虫对黄色有趋性。主要防治措施为在蕾期用菊酯类等药剂喷雾防治成虫和在蕾花期以４０％氧化乐果乳油等药剂喷雾防治成虫、卵和幼虫。
Rape leaf nitidulid, Strongyllodes variegatus (Fairmaire,1891) (Coleoptera: Nitidulidae) found in Gansu, China, is a new pest attacking rape in the world. Its distribution, morphology characteristics of different stages, damage and symptom, life history, population dynamics and its control in springsown rape field in Linxia Gansu China are reported in the present paper. The adults eat leaves and buds lead to crescent damage on the undersurfaces of leaves and blank stem when buds is heavily damaged in bud period. The adult mainly attack buds. Larvae, leaf minner, eat between the surfaces of leaves, forming the square bubble damage. Under mimic test, it overwintered by adults in soil. 1～2 generations of the pest occur yearly in Linxia. The damage is mainly caused by the overwintered adults eating buds and the larvae of first generation eating leaves. Rearing test under indoor variable temperature (average 17.5℃), shows that the development from eggs to adults needs 32～42 days. The adults have the habit of trending to yellow colour. Mainly controlling measures are that in the bud period, methrin, such as deltathethrin is applyed to control overwintered adults or in the bud flower period, 40% omethate EC 400 mg/kg is applyed by spraying to control adults,larvae and eggs.
出处
《西北农业学报》
CAS
CSCD
1998年第4期18-23,共6页
Acta Agriculturae Boreali-occidentalis Sinica
基金
甘肃省自然科学基金
关键词
油菜
害虫
油菜叶露尾甲
研究
Springsown rape
New pest
Strongyllodes Variegatus (Fairmaire. 1891)
Life history
