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稻秆蝇 Chlorops oryzae Matsumura主要发生在贵州、湖南、湖北、浙江、江西等省稻田,一年约发生三代。过去发生很轻,七十年代末,特别是杂交水稻的大力推广,稻杆蝇的发生和危害明显加重。在我县高坪,营盘圩,代家埔,七岭,滁州等五个乡,1980年发生面积4万余亩,占水田面积的56.7%,被害率达48.2%。为一季晚稻主要害虫。作者于1983年至1984年,进行了稻秆蝇幼虫田间分布型的测验,现将结果简述如下。
Chlorops oryzae Matsumura mainly occurs in paddy fields in Guizhou, Hunan, Hubei, Zhejiang and Jiangxi provinces, with about three generations occurring a year. The past occurred very light, the late seventies, especially the promotion of hybrid rice, the occurrence and harm of rice stem flies significantly increased. In our county Gaoping, Yingpo Wei, Daijiapu, Qiling, Chuzhou and other five townships, in 1980 an area of more than 40,000 acres, accounting for 56.7% of the paddy field area, the rate of 48.2% victimization. A quarter of late rice major pests. From 1983 to 1984, the author conducted a field distribution test on rice larvae. The results are summarized as follows.