Granted Patent B2

US 12,365,638 · App. 18/935,700 · Granted Jul 22, 2025

Inventors: Yufeng Zhang (Shandong, CN); Zhaohui Liu (Shandong, CN)

Assignee: SHANDONG ACADEMY OF AGRICULTURAL SCIENCES

C05F11/08C05B7/00C05C3/005C05C9/005C05D1/005C05D1/02C05G5/12

Abstract

Claims (19)

1. A chemical fertilizer-biological compound fertilizer, comprising an inorganic chemical fertilizer, a microbial agent, and a microbial protectant, wherein the microbial protectant mainly comprises, in parts by mass, 65-85 parts of alginate oligosaccharide and 5-8 parts of tetrahydropyrimidine, and wherein the chemical fertilizer-biological compound fertilizer has nutrient contents of nitrogen, phosphorus, and potassium of greater than 40% and a viable number of microorganisms of 200 million cfu/g or more.

2. The chemical fertilizer-biological compound fertilizer according to claim 1 , wherein the microbial protectant further comprises at least one of burdock oligosaccharide, chitosan oligosaccharide, amino acid, vegetable oil, fumaric acid, and citric acid.

3. The chemical fertilizer-biological compound fertilizer according to claim 2 , wherein components in the microbial protectant comprise, in parts by mass: 4-6 parts of burdock oligosaccharide, 6-10 parts of chitosan oligosaccharide, 6-10 parts of amino acid, 5-10 parts of vegetable oil, 8-10 parts of fumaric acid, and 6-10 parts of citric acid.

4. The chemical fertilizer-biological compound fertilizer according to claim 3 , wherein the burdock oligosaccharide has a degree of polymerization of 10-15.

5. The chemical fertilizer-biological compound fertilizer according to claim 3 , wherein the amino acid comprises one or more of glutamic acid, aspartic acid, and phenylalanine.

6. The chemical fertilizer-biological compound fertilizer according to claim 3 , wherein the vegetable oil comprises soybean oil and/or castor oil.

7. The chemical fertilizer-biological compound fertilizer according to claim 2 , wherein the microbial protectant is obtained by quantitatively taking raw materials of the components of the microbial protectant, stirring and mixing uniformly.

8. The chemical fertilizer-biological compound fertilizer according to claim 1 , further comprising a microbial protectant, wherein a mass ratio of the microbial protectant to the microbial agent is ≥1.

9. The chemical fertilizer-biological compound fertilizer according to claim 8 , wherein the mass ratio of the microbial protectant to the microbial agent is (1-100): 1.

10. The chemical fertilizer-biological compound fertilizer according to claim 1 , wherein the inorganic chemical fertilizer comprises an inorganic nitrogen fertilizer, an inorganic phosphorus fertilizer, and an inorganic potassium fertilizer; the inorganic chemical fertilizer comprises, in parts by mass: 15-55 parts of the inorganic nitrogen fertilizer, 20-50 parts of the inorganic phosphorus fertilizer, and 10-50 parts of the inorganic potassium fertilizer.

11. The chemical fertilizer-biological compound fertilizer according to claim 10 , wherein the inorganic nitrogen fertilizer comprises urea and ammonium sulfate; the inorganic phosphorus fertilizer comprises monoammonium phosphate and diammonium phosphate; the inorganic potassium fertilizer comprises potassium sulfate, potassium chloride, and potassium nitrate.

12. The chemical fertilizer-biological compound fertilizer according to claim 1 , wherein the microbial agent mainly comprises at least one of Bacillus amyloliquefaciens and Bacillus subtilis.

13. The chemical fertilizer-biological compound fertilizer according to claim 12 , wherein the microbial agent further comprises one or more of Bacillus megaterium, Bacillus mucilaginosus, Brevibacillus laterosporu, Bacillus thuringiensis, Paenibacillus polymyxa , and Trichoderma harzianum.

14. The chemical fertilizer-biological compound fertilizer according to claim 1 , wherein the chemical fertilizer-biological compound fertilizer has nutrient contents of nitrogen, phosphorus, and potassium of 40-55% and a viable number of microorganisms of 0.2-1 billion cfu/g.

15. The chemical fertilizer-biological compound fertilizer according to claim 1 , wherein the alginate oligosaccharide has a molecular weight 2000 Da or less, a degree of polymerization of 2-20, and a 2-6 sugar content 70% or more.

16. The chemical fertilizer-biological compound fertilizer according to claim 1 , wherein the microbial protectant is obtained by quantitatively taking raw materials of the components of the microbial protectant, stirring and mixing uniformly.

17. A preparation method for the chemical fertilizer-biological compound fertilizer according to claim 8 , comprising the steps of:

mixing a microbial agent and a microbial protectant, and then mixing with raw materials of an inorganic chemical fertilizer uniformly, granulating, spheroidizing, screening, and packaging to obtain the chemical fertilizer-biological compound fertilizer.

18. The preparation method according to claim 17 , wherein granules of the obtained chemical fertilizer-biological compound fertilizer are round and have a particle size of 2.8-4.75 mm and a hardness of 30-40 N.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (13)