1, the abstract should exclude the content that has become common sense in this subject field; Never write what should appear in the introduction into the abstract; Generally don't interpret and comment on the content of the paper (especially self-evaluation).

2. Don't simply repeat the information already in the title. For example, if the title of an article is "Study on Rhizome Formation in Vitro Culture of Several Orchids from China", then don't write at the beginning of the abstract: "For.

3. Rigorous structure, concise expression and exact semantics. What to write first, then what to write, should be arranged in logical order. Sentences should be coherent and echo each other. Use long sentences with caution and keep them as simple as possible. Every sentence should be clear, and there should be no vague, general or vague words, but the abstract is a complete essay after all, and telegraph writing is not enough. The abstract is not segmented.

4. Use the third person. It is suggested that the description methods such as "research …", "report …" and "investigation …" should be used to indicate the nature and theme of the literature at one time, instead of "this article" and "author" as subjects.