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我省水稻三化螟,一年发生3—4代,以第三代为害最重,第二、四代次之。第一代为害早稻、早插中稻成枯心。第二代为害一季晚和迟插中稻成枯心;为害迟熟早稻成白穗。第三代为害早插双季晚和迟插一季晚稻成枯心,为害迟熟中稻成白穗。第四代为害中、迟熟双季晚稻成白穗。在大发生年份,为害猖獗,造成损失甚大。为了消灭三化螟,确保水稻增产丰收,根据我省广大群众实践经验,兹将“两查两定”方法简介于后。
Three generations of rice borer in our province, occurred 3-4 generations a year, the third generation of the worst damage, followed by the second and fourth generations. The first generation of damaging early rice, insert early rice into dry heart. The second generation of damaging a quarter late and mid-late rice into a dead heart; early maturity of rice into white ear damage. The third generation of damaging early plug-double late and late plug into a late rice into dry heart, late maturity of rice into white spike. The fourth generation of victims, the late double-season late rice into white spike. In the year of big occurrence, the rampant damage has caused great losses. In order to eliminate the yellow rice borer, to ensure that rice yield increase, according to the practice of the masses in our province, hereby “two check two set” method is introduced in the later.