Study on Fertilizer Effects of Compound Fertilizers Made of Ni-Removal Concentrated Liquor from Spent Electroless Nickel Solution on the Potted Corn

The pot experiment was carried out to study fertilizer effects of two kinds of compound fertilizers that were made of Ni-removal concentrated liquor from spent electroless nickel, which the concentrations of phosphorus and nitrogen were high, on the corn and changes of the nutrients in the soil. The results showed that two concentrated liquor compound fertilizers could make the growth of corn shoots normal, and fertilizer effects were not significantly different with that of superphosphate compound fertilizer. Compared with the no fertilizer treatment, concentrated liquor compound fertilizers could remarkably increase dry mass of corn biomass and contents of N,P,K in the soil. It revealed that the concentrated-liquor compound fertilizer had obvious fertilizer effect on the corn.