最近笔者到种植大蒜的乡村调查时,发现已出的蒜苗中有的新叶发黄枯死,有的成叶叶色褪淡,有的蒜叶中呈现灰白色不规则的潜道,还有些蒜头的茎盘由饱满变得干瘪。不少农民不知这是什么原因造成的。据诊断,这是种蝇、蓟马、潜叶蝇及咖啡豆象危害引起的。现将其危害症状及防治措施分述如下。种绳又称地蛆。危害大蒜的有种蝇和葱蝇。这两种种蝇形态相 Recently I went to the village survey of garlic, found that some of the newly emerged garlic leaves yellow dead, and some into the leaf color faded, and some garlic gray gray irregular subways appear, there are some garlic Stems become dull from fullness. Many peasants do not know what causes this. According to the diagnosis, this is caused by the hazards of flies, thrips, leaf miner and coffee beans. Now its harmful symptoms and prevention measures are described below. The kind of rope is also called maggot. Harm garlic’s kind of fly and onion fly. These two species of flies morphological phase