塑料袋栽培食用菌,一般都要用特制的塑料颈圈来代替瓶口。一只塑料颈圈虽然只有2分钱,但不易买到,且邮寄花时间又不方便。为此,我们试用牛皮纸折叠成一只颈圈。实践表明,效果良好,既经济又简单,很适合专业户使用。现将其制作方法介绍如下: Plastic bags of edible mushrooms, generally have to use a special plastic collar instead of the bottle. Although a plastic collar only 2 cents, but not easy to buy, and mailing time inconvenient. To this end, we try kraft paper folded into a collar. Practice shows that the effect is good, both economical and simple, it is suitable for professional use. Now its production methods are as follows: