Using papermaking alkaline lignin to produce zinc lignosulfonate and its effect on corn growth

The experiment used papermaking alkaline lignin(AL)to produce zinc lignosulfonate(Zn-LS)by a given technical process which was combined with Zn. The results of pot experiment indicated that on limy soil in north of Guangdong province the corn fertilized with Zn-LS grew well, and its biomass was higher than that of inorganic Zn, it is a kind of highly effective slow-releasing trace fertilizer.