A kind of potassium fertilizer based lignin was made from modified lignin and potassium chloride, leaching experiment and pot experiment were conducted to test the effect of modified lignin on slow-releasing potassium fertilizer and the Bio-utilization.

Preliminary study of potassium fertilizer s effect on sweet potato yield;

Effect of potassium fertilizer on the drought resistance of Lolium perenne;

Effects of phosphate and potassium fertilizers on water absorbent and nutrients holding ability of water retaining agent;