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稻瘿蚊过去多发生在我省的山区和丘陵区。近年来,平原垌田及沙围田地区也发生严重,面积逐年扩大。1973年,全省有半数以上的县市发生,个别地区损失严重甚至失收。在许多地区,稻瘿蚊已上升为主要害虫。近年来,我们以中山和从化两县为重点,对稻瘿蚊发生的因素和防治对策进行了调查研究,并推广了过去行之有效的综合防治措施,有效地控制了稻瘿蚊的发生和为害。1973年,中山和从化县发生面积虽然分别达16万亩和15万亩,但经过防治,损失面积分别压至9000多
Rice gall midge occurred in the mountains and hilly areas in the past. In recent years, the plains 垌 Tian and Shawei area also occurred seriously, the area expanded year by year. In 1973, more than half of the counties and cities in the province took place, causing severe loss or even loss in some areas. In many areas, rice gall midge has risen to become a major pest. In recent years, we focus on the Zhongshan and Conghua counties, the occurrence of rice gall midge mosquito factors and prevention and control measures were investigated and promoted the past comprehensive effective prevention and control measures to effectively control the occurrence of rice gall midge mosquito Harmful. Although the area of Zhongshan and Conghua in 1973 was 160,000 mu and 15,000 mu, respectively, the areas under control dropped to over 9,000