由于食用菌的栽培周期短，因此对食用菌使用农药，尤其是在出菇期使用农药，农药极易残留在子实体内。在国际市场上对食用菌的卫生要求和检测越来越严格，特别是我国加入WTO后，可以预见所谓“绿色贸易壁垒”也越来越成为我国农副产品特别是食用菌出口的严重问题。如美国等一些 As edible fungus cultivation period is short, so the use of pesticides on mushrooms, especially in the fruiting period of the use of pesticides, pesticides easily remain in fruiting bodies. In the international market, the hygienic requirements and testing of mushrooms are becoming more and more strict. Especially after China’s accession to the WTO, it can be foreseen that the so-called “green trade barriers” are increasingly becoming serious problems in the export of agricultural and sideline products, especially mushrooms. Some such as the United States