实践证明,在露天袋栽香菇工艺中,接种好坏是栽培成败的关键。据调查,菌袋污染率一般都在10～30%,少数严重的达50%以上,有的甚至全部报废。1986年福建省袋栽香菇1亿4千多万袋,因接种污染造成经济损失估计2～3千万元。因此,如何减少污染,是当前袋栽香菇生产上一个亟待解决的大问题。现针对生产中出现的一些问题作出原因上的分析,并提出防治对策。污染途径及表现(一)菌种污染。栽培种本身已被污染,或接种前菌种处理不当,接种后直接污染菌袋,污染部位出现在接种穴口周围,常表现为局部的连续性污染。(二)配料装袋不当。拌料过湿,导致香菇菌丝 Practice has proved that in the open bag mushroom cultivation process, the success or failure of vaccination is the key to success. According to the survey, bacteria bag contamination rates are generally 10 to 30%, a few serious up to 50% or more, and some even all scrapped. In 1986, more than 140 million bagged mushrooms were bagged in Fujian Province, causing an estimated 2 to 30 million yuan of economic losses due to inoculation. Therefore, how to reduce pollution is a big problem to be solved urgently in the current production of bagged mushrooms. For the emergence of some problems in the production of the reasons for the analysis, and put forward prevention and control measures. Pollution ways and performance (A) strain contamination. Cultivation itself has been contaminated, or pre-vaccination species improper handling, directly inoculated bacteria bag after inoculation, contaminated sites appear in the vaccination hole around, often manifested as local continuous contamination. (B) improper bagging ingredients. Mixing material is too wet, resulting in mushroom mycelium