The author introduce a new type efficient humic acid compound fertilizer with N and K.The fertilizer is synthetized by mixing chemical fertilizer with N and K into weathered coal.

• 本文介绍了以风化煤为基础掺合料,配以含氮、钾养分的化学肥料,制成新型高效的腐植酸氮、钾复合肥。