2. Qualification levels can also be distinguished according to actual requirements, that is, according to the scope of various professional activities, the quantity and quality of work content, job responsibilities and other factors, specific professional posts are divided into different qualification levels, and skilled operators are divided into junior, intermediate, senior, technician and senior technician. According to different levels of professional qualifications, we can put forward corresponding knowledge and skills requirements for relevant employees or practitioners. Agricultural workers can apply for vocational qualification certificates by participating in agricultural vocational skill appraisal, performance evaluation and vocational skill competition. Those who pass the theoretical knowledge examination and operational skill examination of vocational skill appraisal can obtain the corresponding vocational qualification certificate. For workers who have made major inventions, technological innovations, obtained patents and overcome technical difficulties, they can obtain or be promoted to the corresponding level of vocational qualification certificates after being evaluated by experts organized by the Vocational and Technical Appraisal and Guidance Center of the Ministry of Agriculture.