杂菌污染是食用菌生产中经常碰到的问题。一般来说,在母种斜面试管培育中发生较少,而在原种、栽培种,以及大面积生产上发生较多,夏季为害特别严重。几年来,在防治杂菌污染方面,我们有以下几点体会: (一)科学使用优良菌种:优良菌种是食用菌获得高产优质的先决条件,但对优良菌种亦应重视科学保管和合理使用。从近20年来,我国农村食用菌生产几起几落的情况来看,尽管原因是多方面的,但让菌种无限制地传代,使其丧失原有优良性状,则是重要原因之一。为此,我们建议食用菌母种应 Bacteria pollution is often encountered in mushroom production problems. In general, there are fewer occurrences in the test tubes of the mother slant, but more in the original species, the cultivated species and the large-scale production, and the damage in the summer is particularly serious. In recent years, in the prevention and control of bacterial contamination, we have the following experience: (a) scientific use of good strains: good bacteria is edible fungus to obtain high yield and quality of the prerequisite, but also for good strains should also be scientific preservation and Rational use. From the past two decades, the situation of edible fungus production in our country has been quite different. Although the reasons are many, it is one of the important reasons for letting the bacteria pass without limit and causing them to lose their original good traits. For this reason, we suggest that edible fungi should be used