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在自然界中常常是好多种微生物混杂在一起,而人们所要研究和利用的只是其中的某一种,因此要设法将混杂在一起的多种微生物——分离开来,分别进行培养。然后观察和研究,选出人们需要的单纯一种微生物,这就叫筛选菌种。虽然微生物种类很多,性能也各不相同,但筛选菌种的方法一般分取样、增殖、分离和测定四个步骤。一、取样:微生物在自然界分布很广,我们所需的那种微生物究竟生活在什么地方?到什么地方去取样?这要首先对我们所
In nature, many kinds of microorganisms are often mixed together, and people want to study and utilize only one of them. Therefore, it is necessary to try to separate a variety of microorganisms mixed together and cultivate them separately. Then observe and research, select the people just need a kind of microorganism, which is called screening strains. Although many types of microorganisms and performance vary, but the method of screening strains generally sub-sampling, proliferation, separation and determination of four steps. First, sampling: micro-organisms in the distribution of a wide range of nature, we need the kind of micro-organisms living in what place? To where to sample? This should be the first of our