Mechanism and research progress of nutrient slow-release in slow-release fertilizer
Slow-release fertilizer is one of the effective ways to improve the utilization rate of fertilizer,which is of great significance to the sustainable development of agriculture.The connotation of the existing slow-release fertilizers,such as physical barrier coated type,chemical synthesis micro-soluble type and stable fertilizer,as well as the main varieties,slow-release mechanism,key technologies,advantages and disadvantages are introduced in detail.In view of the problems existing in various slow-release fertilizers,the research direction of future development is proposed.The main focus of slow-release fertilizer research is to develop inorganic coating materials with better slow-release performance,reduce the cost of organic coating materials,combine the slow-release technology of different types of slow-release fertilizers,and realize the accurate consistency of nutrient release rate and crop demand.
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