论文部分内容阅读
有一种讨厌的小飞虫经常光顾花友的盆花:在混入未腐熟羊粪的盆土中,在埋过菜叶的盆土中,在放了汤药残渣的盆面上,都能见到它们的身影。这种小飞虫名叫灰地中蝇。幼虫白色,体长约4毫米,翻土后即可见到(图1)。成虫黑色,体长约4毫米(图2)。灰地中蝇幼虫在土中危害种子,取食胚乳或子叶及植物根部。成虫吸食肥料、植物花蜜和幼嫩部位,对未腐熟的粪肥很强的趋性。
There is a nasty little bug frequented flower pots: in the infiltration of potting soil is not cooked sheep manure, buried in the basin of potted soil, put the dumplings on the surface of the soup, can see them Figure. This little bug is called the gray fly. Larvae white, about 4 mm body length, after turning the soil can be seen (Figure 1). Adult black, body length of about 4 mm (Figure 2). Gray fly in the soil in the larvae of seed damage, feeding endosperm or cotyledons and plant roots. Adult insecticide fertilizer, plant nectar and tender parts of the non-decomposed manure have a strong tendency.