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1991年稻飞虱主要是褐稻虱在我市严重发生,全市种植水稻47.87万亩,稻飞虱发生面积达36.9万亩,其中绝收面积2万多亩。尤其是沿黄河引黄灌溉稻区发生危害更重。其特点是:发生迟、来势猛、危害重。预计全市减收稻谷2200多万公斤。
In 1991, planthopper was mainly caused by brown planthopper in our city. The city planted 478,700 mu of rice and the occurrence of planthopper was 369,000 mu, of which, the area with a total area of more than 20,000 mu was abolished. In particular, the Yellow River Yellow River irrigation more serious damage occurred. Its characteristics are: late, fierce trend, endangering heavy. The city is expected to reduce the rice more than 2200 million kilograms.