稻瘿蚊间歇性暴发原因和治理对策探讨

Analysis on intermittent outbreak of Orseolia oryzae and its control strategies

通过多年的系统调查和观察,明确了稻瘿蚊发生具有间歇性、隐蔽性、暴发性、毁灭性和专一性等5个特点,分析了其在大田县间歇大发生有5个方面的因素。防治上提出农业防治可采取“铲”、“避”、“改”等方法,化学防治应选用具有强触杀、强渗透力药剂,采用毒土法施药技术。

By systemic investigation and observation for many years,the occurring characteristics of Orseolia o-ryzae were made clear as the following:int ermittence,being cryptic,outbreak,destructiveness and specificity.Five factors in the intermittent out break of Orseolia oryzae in Datian county were analyzed.Some agricultural con-trol methods such as eradicating weeds,adjusting seeding time and crop r otation were proposed in this paper t o con-trol Orseolia oryzae.And in respect of chemical control,t he pesticides of powerful acute toxicity and penetrativity should be chose,the best applicatio n technology of pesticides was the poisoned soil baiting method.