元葱是我市主栽的夏菜品种之一,历年种植面积都在千亩左右,产量达二百万斤。不但调剂了市场供应,而且可以冬贮,延后供应。但是,在元葱生产、贮藏的过程中,常常遭受元葱地蛆的为害,对产量影响很大。一般年份减产百分之十五,严重年份减产百分之四十以上。 Yuan onion is one of the summer varieties of vegetables planted in our city. The annual planting area is about mu, with the output reaching 2 million kg. Not only adjust the market supply, but also winter storage, delayed supply. However, in the process of production and storage of the onion, it is often damaged by the maggot of the onion and has a great impact on the yield. In general, the annual output will be reduced by 15% and the serious year will be reduced by 40% or more.