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腐植酸作为一种尿素增效剂从六十年代起已开始为国内外农学界所认识。国外以日本及前苏联最早开始这方面的研究,其目的是应用腐植酸的特性,采用不同方式与尿素作用,制备成各类增效或缓释肥料,防止尿素分解,提高其氮的利用率,还可作为土壤改良剂使用。近十年来单一的HA氮肥增效剂的开发与研究报道已不多见,而大部分的研究仍是以腐植酸+尿素与磷、钾肥复配,制备腐
Humic acid as a urea synergist has been recognized by agronomists at home and abroad since the 1960s. Foreign countries in Japan and the former Soviet Union to start the earliest study in this area, the purpose is to use the characteristics of humic acid, using different methods and the role of urea, prepared into various types of synergistic or slow-release fertilizer to prevent the decomposition of urea and improve its nitrogen utilization , But also as a soil improver. In recent ten years, the development and research reports of a single HA nitrogen synergist have been rare, and most of the research is still humic acid + urea and phosphorus, potassium fertilizer, preparation of rot