Production of organic-inorganic compound fertilizer by using of the papermaking waste liquid from ammonium sulfite treating wheat grass

The processes and technologies are described for production of organic-inorganic compound fertilizer by using of the papermaking waste liquid from ammonium sulfite treating wheat grass.The quality indexes of the fertilizer product are better than those of the existing national standards for organicinorganic compound fertilizer(GB 18877-2002).The results of field trial show that the fertilizer can increase gain yield distinctly.