Disintegratable round-grain boron magnesium fertilizer and preparation method thereof

Abstract

The invention belongs to the field of agricultural fertilizers, and particularly relates to a disintegratable round-grain boron magnesium fertilizer which is prepared from the following raw materials in parts by mass: 51-55 parts of brucite powder, 35-43.5 parts of boromagnesite powder, 0-5.5 parts of borax pentahydrate, 2-3 parts of boric acid and 1.5-4 parts of calcite. Water is used as a binding agent. The prepared round-grain boron magnesium fertilizer is 2-4mm spherical grains, of which the 2-4mm throughput rate is greater than or equal to 95%, the strength is greater than or equal to 2Kg / cm<2>, the disintegration rate is greater than or equal to 90%, the MgO mass content is greater than or equal to 40%, and the B2O3 mass content is 9-11%. By using the water as the granulating liquid phase and the mixture powder of brucite powder, boromagnesite powder, borax pentahydrate, boric acid and calcite as the dry material, the round-grain boron magnesium fertilizer has the advantages of cheap and accessible raw materials and reasonable formula. The mixture is granulated, screened, dried, cooled and packaged to obtain the 2-4mm spherical grains. The product is pure natural spherical grains, and has the advantages of high uniformity, smooth surface and high strength; the disintegration rate is greater than or equal to 90%; the boron magnesium fertilizer can be quickly disintegrated, is long-acting, and is convenient for mechanical spreading and mixing with other fertilizers.

Description

technical field [0001] The invention belongs to the field of agricultural fertilizers, in particular to boron and magnesium fertilizers. Background technique [0002] Boron and magnesium are essential nutrients for plant growth. Boron is related to the synthesis of protein and lignin, can increase the permeability of cell membranes, and plays an important role in the transportation of carbohydrates. The role of boron-containing fertilizers: (1) Boron can promote the formation and normal development of plant genitalia, significantly increase the pollination rate of flowers, and increase the output of agricultural products; (2) It is beneficial to the synthesis and operation of carbohydrates, thereby accelerating the metabolic process of substances , promote crop development and growth; (3) promote root development and increase nitrogen fixation capacity; (4) boron can improve crop resistance to disease. Magnesium mainly exists in chlorophyll, phytochemicals and pectin, and ...

AI Technical Summary

Problems solved by technology

There are disadvantages such as low boron content, poor disintegration effect, poor roundness of particles, easy to pollute the environment, etc.