关键词: 精原干细胞, 精原干细胞, 增殖, 分化

Abstract: To solve the problems of agriculture, countryside and farmer, especially in the western regions of china, is the key to realize the Great Goal of fulfilling well-off society and constructing a Socialist Harmonious Society. This thesis expands the form and causes of the problems of agriculture, countryside and farmer of western, and puts forward that we may solve the problems of agriculture, countryside and farmer, form these ways: Promoting innovation of system; Realizing intergradations between the city and countryside; Increasing devotion on the problems of agriculture, countryside and farmer, Building Modern Agriculture; Adhering to the people-oriented principle; Improving the Quality of Peasants; Deepening rural reformation and Protecting farmers’ interest.