草地螟成虫产卵对植物有明显的选择性。通过多年来田间调查和分析,杂草是草地螟成虫产卵首选寄主,其中以藜科、蓼科、菊科等的杂草落卵量多、落卵比率大,禾本科的狗尾草和稗草也是草地螟成虫主要产卵寄主,一些作物上草地螟成虫也产卵。通过及早和适时采取中耕除草能起到理想的避(灭)卵作用,对减轻草地螟为害程度可起到理想的控害作用。 Spodoptera litura adult eggs have obvious plant selectivity. Through field investigation and analysis over the years, weeds are the preferred host for laying eggs of adult meadow flies, of which weeds with Chenopodiaceae, Polygonaceae and Compositae have more eggs, It is also the main spawning host of the grass borer, and some of the grasshopper adults also lay eggs. By early and timely cultivation and weeding can play an ideal role in avoiding (killing) eggs, which can play an ideal role in controlling grasshopper damage.