Soybean dregs can be dried directly into the sun to make fertilizer, and put it into the ground for planting plants. Soybean residue is a by-product of the production of soy milk or tofu process, the annual global production of soybean residue is very large. China is the birthplace of tofu production, has a long history of tofu production, tofu production, sales are larger, the corresponding production of soybean dregs is also very large.

Fertilizer refers to the provision of one or more than one kind of plant essential nutrients, improve soil properties, improve soil fertility levels of a class of substances, is one of the material basis of agricultural production. It mainly includes ammonium phosphate fertilizers, large amount of elemental water-soluble fertilizers, medium amount of elemental fertilizers, bio-fertilizers, organic fertilizers, multi-dimensional field energy concentrated organic fertilizers and so on.