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了解当地的天敌资源,查明天敌对害虫种群数量控制的作用,对天敌加以保护利用,是植保工作的一项主要任务.本文主要是报导金秀县六拉中稻区于87年8月中旬,稻苞虫幼虫的平均寄生率高达
It is a major task of plant protection to understand the resources of natural enemies and to find out the effect of natural enemies on the control of pest populations and to protect and utilize natural enemies.This paper mainly reports on Liulaizhong rice area of Jinxiu County in mid- The average parasitism rate of rice larvae larvae is up to