Graduation thesis is an important link that undergraduates must complete. According to the Regulations on the Management of Student Status in Colleges and Universities, junior college students, like ordinary four-year undergraduates, must complete the task of writing graduation thesis before graduation.
It is necessary for undergraduate students to defend their thesis. This is a hard requirement. Most colleges and universities stipulate that when applying for a degree, they must submit corresponding dissertations, and only after passing the defense can they obtain the undergraduate diploma and bachelor's degree. Students should start with the thesis, and only by making full preparations can they successfully pass the thesis defense. Therefore, more efforts should be made when writing the graduation thesis, which are all preparations for getting good results in the thesis defense.
1, substrate cultivation, the principle of substrate cultivation is to use some culture media to fix the roots of plants, and then use nutrient solution to supply nut