山西省孝义市第二中学教师郭玉海在博客上发表了腐乳制作实验过程,其效果不是很理想,郭老师指出自己选用的实验材料及操作都符合实验要求,然而实验中毛霉却未能如期正常生长。郭老师把该问题置顶后引发各方热议,希望浏览的同仁能找出实验失败的原因。笔者认真分析其实验过程,找出实验失败可能存在的问题,并对该实验进行了改进和尝试,取得了较为理想的效果。一、实验分析观察郭老师实验时所拍照片以及与其交流可知,他们实验时所选用的菌种来自自然界的天然菌种,用瓷盘作为放置豆腐块的装置,毛霉初期在豆腐块可以生长,但随着时间的推移,豆腐的水分逐渐丧失,同 Guo Yuhai, a second middle school teacher in Xiaoyi City, Shanxi Province, published a test on fermented bean curd production on his blog. The effect is not very satisfactory. Teacher Guo pointed out that the experimental materials and operations of his choice met the experimental requirements. However, during the experiment, Grow normally. Guo put the issue after the top of the issue caused by hot parties, hope colleagues can browse to find out the reasons for the experiment failed. The author carefully analyzes the experimental process, identify possible problems of experimental failure, and the experiment was improved and tried, and achieved a more satisfactory results. First, the experimental analysis Observed Guo experiment photos taken and the exchange shows that they used in the experiment selected strains of natural species from nature, with porcelain plate as a place to place the tofu block, the initial growth of mold in the tofu block can grow , But as time goes by, the moisture of tofu gradually lost, with