1. The activity of plant and microbic phytases depending on the medium pH was studied.

2. "Microbic marketing" is highly competitive; many brands of yogurts, many yogurt drinks, and many capsules of live bacteria are on display-all promising to be good for you!

3. The new technology of producing Viral microbic insecticides are summarized in this paper. That is using the culture of insect cells to produce Viral microbic insecticides.

4. Plants frequently encounter stresses such as salinity, drought, heavy metal, radiation, low temperature, microbic infection; they adversely affect plant growth, development and productivity.

5. The contents are involved with organic synthetical polymer flocculant, natural polymer flocculant and microbic flocculant.