With the development of ecological agriculture and high efficient agriculture, the needs for chemical fertilizers have changed. There is a growing need for potassic, phosphate and compound fertilizers. However, there is a very serious shortage of soluble potash mineral resources, a necessity for producing potassic and compound fertilizers. On the other hand, there is abundance in insoluble potash mineral resources. This paper discusses the advantages of the insoluble potash mineral resources and suggests the comprehensive exploitation of alunite and illite and the utilization of the potash spar resources in Dashuang,Dongyang to produce potassic fertilizers. Research on the production of potassic fertilizer using high potash sandy shale and tufa is also recommended so as to satisfy the needs of agriculture for fertilizers.