In order to optimize the environmental factors for cucumber growth, a fertilizer and water control system was designed based on the Internet of Things (IoT) system. The IoT system monitors environmental factors such as temperature, light and soil Ec value, and uses image processing to obtain four growth indicators such as cucumber stem height, stem diameter size, number of leaves and number of fruit set to establish a single growth indicator model for temperature, light, soil Ec value and growth stage, and the four growth indicators were fused to obtain the comprehensive growth indicator I_c for cucumber, and calculates its deviation to determine the cucumber growth status. Based on the integrated growth index I_c of cucumber, a soil Ec control model was established to provide the optimal environment and fertilizer ration for cucumber at different growth stages to achieve stable and high yield of cucumber.

Nowadays, the scale of graduate education in our country has been growing, but the quality of graduate education has not been improved. Therefore, how to effectively improve the quality of postgraduate education has become the most concerned issue in the academic circle and universities, which directly highlights that the internal guarantee mechanism of postgraduate students to improve the quality of postgraduate education has become the focus of academic research, in which tutors are the main influencing factors of postgraduate education quality. The tutor plays a positive and dominant role in stimulating, demonstrating, modeling, guiding and infecting the postgraduate's behavior. This paper analyzes the existing problems in exerting the role of postgraduate tutors, and from the problems, puts forward the countermeasures and suggestions to exert and mobilize the initiative of tutors.

Great country craftsmen are skilled craftsmen who strive for the prosperity and prosperity of the country and the well-being of the people in important positions related to the national economy and people's livelihood. The key to cultivating craftsmen in major countries lies in the Party. However, in a vocational undergraduate survey, it was found that the Party's political, ideological, organizational, work style, and institutional leadership role was not well played in the process of cultivating craftsmen in major countries. To this end, we should focus on reflecting the "two safeguards" throughout the entire process of cultivating craftsmen in major countries, and strengthen the Party's comprehensive leadership over the cultivation of craftsmen in major countries; We should adhere to using the Party's innovative theory to guide the practice of cultivating great country craftsmen, and integrate ideological and political work throughout the cultivation of great country craftsmen, in order to promote the construction of grassroots party organizations with high quality, and play a leading role in cultivating craftsmen in major countries; we should also take the lead in actively researching and solving problems, and promote reform, innovation, and development, so as to improve the institutional system for leading the cultivation of craftsmen in major countries through party building, and enhance the institutional execution ability of party members and members.