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1993年油菜潜叶蝇在安徽省庐江县大发生,30万亩油菜普遍受害,为害程度严重。幼虫盛发期在4月中、下旬,幼虫潜入油菜叶片表皮后,形成弯曲的灰白色潜道,受害较重叶片,叶肉被虫食光,仅剩上下表皮,影响油菜产量和品质。据4月下旬在城关、缺口、汤池等乡(镇)乡点调查:油菜田虫田率100%,受害株率80—100%,平均94.5%,受害叶率40—100%,平均82.3%,每片叶内有虫3—
1993 rape leaf miner occurred in Lujiang County, Anhui Province, 30 million mu of rape generally suffered serious damage. In mid-April and late larvae of larvae, larvae infiltrated the epidermis of rape leaves, resulting in a curved, grayish-white snake. The heavier leaves and mesophyll were eaten by insects, leaving only the upper and lower epidermis, affecting the yield and quality of the rapeseed. According to the investigation of the township (town) point in Chengguan, Gap and Tangchi in late April, the rate of rape field was 100%, the strain rate was 80-100%, the average 94.5%, the damaged leaf rate was 40-100%, the average was 82.3% Each leaf has a worm 3-