双孢蘑菇(下称蘑菇)产区螨为一大害.在蘑菇上造成严重危害的螨有多种,其中兰氏前微异螨Microdispus (Premicrodispus) lambi (简称兰氏螨)危害面积最大,也最难防治,常造成大面积毁灭性破坏.多年来不少人在寻找有效的防治方法,但终未有突破性进展.笔者认为其主要原因是传播途径不明,故防治措施不能切中要害.为此,我们开展了本课题研究.一、材料与方法(一)材料①供试蘑菇为176菌株.②兰氏前微 Mites of Agaricus bisporus (hereinafter referred to as mushroom) are a major hazard, and there are many kinds of mites that cause serious harm to mushrooms, of which Microdispus (Premicrodispus) lambi (Larus mite) But also the most difficult to prevent and control, often causing large-scale devastating destruction.Over the years many people are looking for effective methods of prevention and treatment, but in the end there is no breakthrough .I think the main reason is the unknown pathways of transmission, so prevention and control measures can not be cut. To this end, we carried out the research topic.Material and methods (A) material ① for the test mushroom strain of 176. ② before Lan micro