Incorporation process of green manure in North China and current countermeasures of related machinery

With increasing use of green manure in cultivation, the mechanization of green manuring is developing rapidly. However, at present, the agricultural machinery and equipment used in green manure planting is inadequate to meet the needs of the rapidly developing green manure industry. Owing to the stagnation of green manure planting and related research in China in previous years, suitable types and functions of green manure rolling machinery are lacking, the division methods and related concepts and terms are not standardized, and the concepts related to green manure rolling mechanization in different regions are vague and confusing. From the perspective of agricultural mechanization for production of green manure, this review summarizes the technological processes and relevant mechanical equipment used for the incorporation of green manure in dry land and orchards in North China, considering particularly grain fertilizer rotation, grain fertilizer multiple cropping, grain fertilizer intercropping and Orchard Green fertilizer intercropping. In view of the confusion associated with naming machines and tools, and the problems of multiple machines, this review systematically names and classifies the types of green manure incorporation machines according to their tipping technology and operation characteristics, and puts forward the corresponding research and development countermeasures and suggestions according to the current use status of incorporation machines and equipment. This review is of great significance for scientific and accurate understanding of the mechanized green manure incorporation process, the rational selection of relevant machinery and associated incorporation processes, and the further development of special incorporation machines for green manure usage in various green manure planting areas (especially for grass-roots production).