腐植酸类肥料在日本的“肥料法”中列入普通肥料(另一种不特殊肥料)。一、1982—1986年各种腐植酸肥料的产量如表1。其总量每年约2.2—3.3万吨,比1980年前有所增长,但这些腐植酸肥料在氮肥、磷肥、钾肥、镁肥等肥料中的比例还是 Humic acid fertilizers include common fertilizers (another non-special fertilizers) in Japan’s Fertilizer Act. First, 1982-1986 various humic acid fertilizer production as shown in Table 1. The total amount is about 2.2-3.3 million tons per year, up from 1980, but the proportion of these humic acid fertilizers in fertilizers such as nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and magnesium fertilizer is still