稻瘿蚊在我县的发生历史很长。过去多在山区发生,为害晚稻秧田,而本田极少被害。但从1970年秋开始,突发为害晚稻本田,发生面积达2万多亩;1972年扩展到8万多亩;1973年全县12个公社均有不同程度发生,最高峰的发生面积达15万亩,占晚稻 Rice gall midge in our county has a long history. In the past, many occurred in the mountainous areas, which damaged late rice seedlings, while Honda was rarely killed. However, from the autumn of 1970, the sudden damage to late rice Honda, occurred in an area of ​​20,000 mu; expanded to 80,000 acres in 1972; the county in 12 communes have varying degrees of occurrence in 1973, the peak occurred in an area of ​​150,000 Mu, accounting for late rice