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在伟大领袖毛主席关于“农业学大寨”的伟大号召下,全国各地为夺取农业丰收掀起了广开肥源的群众运动,制出了许多新化肥、土化肥。腐植酸类肥料就是其中一种。腐植酸类物质存在于土壤、泥炭、褐煤中,风化烟煤中有再生腐植酸,也可以用人工氧化煤的方法(如用空气、氧气、硝酸等作为氧化剂)制得再生腐植酸。用硝酸氧化制得的称硝基腐植酸。一般人们把从土壤、泥炭、褐煤中用碱(通常用氢氧化钠)抽提出的一部分,称为腐植酸。
Under the great call of Chairman Mao on “learning Dazhai Agriculture”, the great leader has set off a mass movement of spreading fertilizer to seize the agricultural harvest and has made many new fertilizers and fertilizers. Humic acid fertilizer is one of them. Humic acid substances exist in soil, peat, lignite, weathered bituminous coal renewable humic acid, you can also use artificial methods of coal (such as the use of air, oxygen, nitric acid, etc. as an oxidant) regeneration humic acid. Nitric acid was used to prepare nitro humic acid. The general people from the soil, peat, lignite alkali (usually with sodium hydroxide) extracted part, known as humic acid.