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麦水蝇(Hydrellia griseote Fallen)以前在恩施城郊未曾严重发生。但据我们近年在金子坝调查,大部分麦田都被其为害,重者被害株率竟高达19.8％,产量损失一成多。 一、发生世代及历期 1,世代。麦水蝇在小麦的整个生育期内 发生两代,春前为越冬代,该代小麦三叶期(11月中下旬)开始产卵孵化,为害至4月中旬;春后为第一代,在小麦孕穗期开始产卵,小麦抽穗未达孵化高峰,一直为害至小麦成熟为止。
Hydrellia griseote Fallen had never been serious in the suburbs of Enshi. However, according to our survey in JinBa in recent years, most of the wheat fields have been harmed by them. In the worst case, the rate of the victims was as high as 19.8% and the yield loss was over 10%. First, the generation and the occurrence of 1, generations. Two generations occurred during the whole growth period of wheat, and the winter was the overwintering generation. The generation of wheat began to spawn and hatch in the mid-to-late April in the trefoil stage (middle and late November), and the first generation in spring, Spawning in the booting stage of wheat, wheat heading less than hatching peak, has been harmful until the wheat maturity up.