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我县发生的麦潜叶蝇主要有小麦黑潜叶蝇占90%以上,其次是小麦潜叶蝇,大麦水蝇偶尔发现。于1966年发生较多,以后几年很少。1976年开始回升,据1977年调查,几乎找不到未受为害的麦叶,麦叶大多枯白,为害十分猖獗,全县大、元麦千粒重平均下降10%之多,重的田块下降16.61%。而且邻近的海门,如东、南通,如皋等县也相继发生,蔓延为害。现将几年来对小麦黑潜蝇,小麦潜叶蝇的调查、试验结果报告如下:
Occurred in my county wheat leafminer mainly wheat black miner leaf fly accounted for more than 90%, followed by wheat leaf miner, barley waterfly occasionally found. Occurred in 1966 more, few in the next few years. According to a survey conducted in 1977, almost no unaffected wheat leaves were found. Most of the wheat leaves were withered and the damage was very rampant. The average weight of one-thousand-grain wheat in the whole county dropped by as much as 10% on average, and the heavy plots declined 16.61%. And adjacent Haimen, Rudong, Nantong, Rugao and other counties have also occurred, spreading damage. Now years of investigation on wheat leafminers, wheat leaf miner, the test results are reported as follows: