1. What Are The Directions Of Soil Improvement? 

The respective mineral materials.

(1) Minerals

Such as peat, lignite, weathered coal, lime, gypsum, vermiculite, zeolite, perlite and sepiolite;

(2) Natural and semi-synthetic water-soluble polymers

There are mainly straw polysaccharide materials, cellulose materials, lignin materials and resinous materials;

(3) Synthetic polymers

There are mainly polyacrylic acid, vinyl acetate maleic acid and polyvinyl alcohol;

(4) Beneficial microbial preparations, etc.

Such as seaweed extract, humic acid fertilizer, etc.

2. What Is The Fineness Requirement Of Soil Improvement For Flour?

Most of the soil improvement zeolite powder is 325 mesh.