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大豆黑潜蝇属双翅目,潜蝇科,在我区一年发生4-5代,成虫仅2-2.5毫米,黑色,有绿色光泽,于每年的5月中、下旬至6月初开始出现成虫.卵产在叶背主脉茎基部两侧叶肉内,幼虫在茎杆内蛀食危害、化蛹.据调查,夏大豆的被害株率高达100%,一般年份可减产3-4成,影响大豆增产.我所经过三年的经验示范,初步筛选出较理想的药剂及防治方法,现已大面积示范推广.
Soybean Strix, Diptera, Siphonidae, occurs 4-5 generations a year in our district, adults only 2-2.5 mm, black, greenish luster, in mid-May each year, early to early June began to appear Adult eggs in the leaves of the main vein on both sides of the base of the leaves of the Ministry of the meats, larvae in the stem borers harm, pupation.According to the survey, summer soybean strain rate as high as 100%, the general annual yield can be reduced to 3-4, Affect the soybean yield.I have gone through three years of experience and demonstration, initially screening out the ideal agent and prevention and treatment methods, is now a large area demonstration and promotion.