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1986年全区水稻病虫鼠害发生面积为7237.4万亩(次),占水稻种植面积的193%,比上年增多30%,系1980年以来最多的一年.经防治后挽回稻谷105014·2万公斤,仍然损失26237.0万公斤,分别比上年增加25%和10%,亦系1980年以来最多的一年.属大发生年份.其特点是上半年重于下半年,虫害重于病害.几种主要病虫害中,稻纵卷叶螟大发生、纹枯病和三化螟中等偏重,局部大发生;细菌性条斑病、稻瘦蚊和大稻缘蝽亦呈上升趋势,重于上年、稻飞虱和稻瘟病属中等程度发生.
In 1986, the area for pest, disease and rodent pests in the whole region was 72.374 million mu, accounting for 193% of the rice acreage, an increase of 30% over the previous year, the highest since 1980. After the prevention and control, 20,000 kg and still lost 262.37 million kg, up 25% and 10% respectively over the previous year. It is also the year with the largest number of occurrences since 1980. It is a year with a large occurrence. It is characterized by a heavier weight in the first half than that in the second half, Among the major pests and diseases, the occurrence of rice leaf roller, sheath blight and rice stem borer were moderately and locally large, and the incidence of bacterial leaf streak, In the previous year, planthoppers and rice blast were moderately occurring.