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稻赤斑黑沫蝉(Callitetix versicolor Fabricius),俗名泡沫虫,是局部稻区间发性害虫,我县历史上无此虫发生的记载,但近3年来,桥头乡早稻受害颇重。 桥头乡是丘陵山地单季与双季混栽区(坡田只插一季早稻),每年插早稻4500亩左右,1983年赤斑黑沫蝉突然大发生,近年每年的发生面积在1100亩左右,严重受害的有300来亩。一般减产5—10％,严重丘块减产20％以上。 1985年7月中旬调查其为害征状及损失程度。此虫寄主有
Callitetix versicolor Fabricius, the common name of foam bugs, is a local pest insects in the region, the history of this county does not record the occurrence of such insects, but the past three years, Qiaotou Township, suffered a lot of early rice. Qiaotou Township is a one-season and double-season mixed planting area in hilly and mountainous areas (only one season of early rice is inserted in the slope fields), and about 4500 mu of early-seasoned rice are inserted each year. In 1983, sudden occurrence of red-cicada occurred suddenly. In recent years, Seriously affected to 300 acres. General 5-10% reduction in output, severe yield reduction of more than 20%. In mid-July 1985 to investigate the damage symptoms and the degree of loss. This insect host there