Research and Application Progress of New-type Fertilizer of Trace Element with Chelate Fertilizer
In recent years,the market of new-type fertilizer has developed rapidly because of its low cost,high economic benefit and meeting the needs of modern agricultural development of'high efficiency,environmental protection,low carbon and energy saving',among which chelating agent is more and more used in the production of new-type fertilizer.Based on the present situation of fertilizer application in China,combining with the classification and comparison of different types of trace elements,chelating agents were divided into synthetic chelating agents,natural chelating agents,biochemical chelating agents and other chelating agents from the source aspect,and their application status in fertilizer was comprehensively analyzed.Finally,it was concluded that the selection of chelate fertilizer should be carried out through high-throughput detection technology combined with application environment,and the comprehensive route of'organic-inorganic combination,quick-acting and persistent-acting complement each other,and chelate partial substitution'should be taken,and the best choice for the sustainable development of trace element fertilizer should be cooperative with each other by'quick-acting type,persistent-acting type and chelating type'.