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近几年随着蔬菜产品和种苗的流通,异常天气的出现及保护地栽培的发展,为大葱病虫害的滋生蔓延提供了条件,一些本来仅在局部发生的病虫传播开来,一些次要的病虫害上升为主要病虫害,给大葱生产造成巨大损失。本文就近几年研究总结报告如下。1.虫害1.1葱地种蝇1.1.1发生规律1年发
In recent years, with the circulation of vegetable products and seedlings, the emergence of unusual weather and the development of protected cultivation, it has provided conditions for the growth and spread of onion pests and diseases. Some pests have only been spread locally and some minor Of the pests and diseases rose as the main pests and diseases, causing huge losses to the production of green onions. This article summarizes the research report in recent years as follows. 1 pests 1.1 onion species of flies 1.1.1 1-year rule of occurrence