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麦水蝇的幼虫在我省冬播小麦苗期蛀入叶内为害,造成脚叶早期枯黄;春季麦孕穗时,卵多产旗叶、剑叶上面,孵化幼虫蛀食叶鞘,被害部位呈白色,有“白秆”之称。叶片倒垂于茎秆上,促使功能叶早枯,严重影响千粒重,产量损失可达10—20％。 1982年我们在营山县对麦水蝇春季世代(冬小麦孕穗期)产卵习性作了一些观察,为防治该虫提供了一些依据。油菜开花可作为测报麦水蝇春季盛发的物候。我们从油菜主
The larvae of wheat-water flies in the winter wheat seeding in our province moth into the leaves damage, resulting in early foot yellow brown; spring wheat booting, egg prolific flag leaves, the top of the flag leaf, hatching larvae eating leaf sheath, the victim site was white , A “white stalk” said. Leaves hanging down on the stem, prompting the functional leaves early dry, seriously affect the 1000-grain weight, yield loss up to 10-20%. In 1982, we made some observations on the spawning habits of wheat-fly in the spring (booting stage of winter wheat) in Yingshan County, and provided some evidences for the prevention and control of the insect. Rape flowering can be used as a report of the spring breeble horns of the phenology. We are from the main rape