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1982年早造,在我县农科所迟播的扇形大豆上发现大豆荚瘿蚊为害,被害率达96％,几乎颗粒无收。过去省内对该虫尚未有报道,在生产上也没有引起注意,因此我们便在1982年至1985年作了一系列调查,现将结果初步整理如下。 (一)分布连续4年7造的调查表明,大豆荚瘿蚊遍布我县。在大豆上受到不同程度的为害。4年先后共调查190块豆田,仅8块未见受害,占调查田总数的4.2％。 (二)形态特征及习性大豆荚瘿蚊属双翅目,瘿蚊科。据观察,成虫体长约3.5毫米,触角丝状,红褐色,14节,雄蚊触角较长,各节圆锥形,
As early as 1982, in our county agricultural delayed sowing soybeans found mulberry mosquito damage, killing rate of 96%, almost no crop. In the past, no reports of this pest were reported in the province and no attention was paid to its production. Therefore, we conducted a series of surveys between 1982 and 1985 and the results are tentatively summarized as follows. (A) Distribution for 4 consecutive years 7 made the survey showed that soybean pods mosquito over my county. Soybean in varying degrees of damage. In the past four years, a total of 190 soybean fields were investigated, of which only 8 were unmanifested, accounting for 4.2% of the total number of fields investigated. (B) morphological characteristics and habits Soybean pod mosquito genus Diptera, Di mosquito family. It is observed that adult body length of about 3.5 mm, antennae filiform, reddish brown, 14, male antennal longer, sections conical,