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High-efficiency nitrogen-fixing phosphate-fixing bio-fertilizer for raising crop output by use of itaconic acid

A crop yield and bio-fertilizer technology, applied in fertilizer mixtures, applications, fertilization devices, etc., can solve problems such as unsatisfactory use effects, affecting crop yields, and unfavorable pest control effects, so as to achieve enhanced nitrogen and phosphorus fixation effects and increase crop yields , the effect of strengthening phosphorus

Inactive Publication Date: 2018-01-05
QINGDAO LANGYATAI GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has been verified by crop planting experiments that the nitrogen and phosphorus fixation effects of the above-mentioned double-salt fertilizers on nitrogen and phosphorus fertilizers need to be further improved, and the effect of using the above-mentioned double-salt fertilizers in conjunction with conventional fertilizer synergists is not ideal. It has the effect of mutual inhibition, which is unfavorable to the inhibition effect of diseases and insect pests when used, and affects crop yield

Method used

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  • High-efficiency nitrogen-fixing phosphate-fixing bio-fertilizer for raising crop output by use of itaconic acid

Examples

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Embodiment 1

[0025] The invention relates to a nitrogen-fixing and phosphorus-fixing high-efficiency biological fertilizer which uses itaconic acid to improve crop yield, comprising nitrogen-fixing fertilizer, phosphorus-fixing fertilizer and a synergist.

[0026] Described nitrogen-fixing fertilizer adopts following steps to make:

[0027] a1 itaconic acid is formulated into itaconic acid aqueous solution, the mass percent concentration of itaconic acid aqueous solution is 7%, then in itaconic acid aqueous solution, add maleic anhydride and acetic anhydride, the mole of itaconic acid and maleic anhydride and acetic anhydride The ratio is 1: 0.5: 0.6 to obtain the first mixed solution, then the first mixed solution is stirred and warmed up to 65°C, and potassium persulfate is added in the mixed solution, the mass ratio of the consumption of potassium persulfate to the consumption of itaconic acid is 0.05, the reaction yielded the first copolymer solution.

[0028] a2 Adjust the pH value o...

Embodiment 2

[0036] The invention relates to a nitrogen-fixing and phosphorus-fixing high-efficiency biological fertilizer which uses itaconic acid to improve crop yield, comprising nitrogen-fixing fertilizer, phosphorus-fixing fertilizer and a synergist.

[0037] Described nitrogen-fixing fertilizer adopts following steps to make:

[0038] a1 itaconic acid is formulated into itaconic acid aqueous solution, the mass percent concentration of itaconic acid aqueous solution is 5%, then in itaconic acid aqueous solution, add maleic anhydride and acetic anhydride, the mole of itaconic acid and maleic anhydride and acetic anhydride The ratio is 1: 0.5: 0.6 to obtain the first mixed solution, then the first mixed solution is stirred and warmed up to 60°C, and potassium persulfate is added in the mixed solution, the mass ratio of the amount of potassium persulfate to the amount of itaconic acid is 0.01, the reaction yielded the first copolymer solution.

[0039] a2 adjust the pH value of the firs...

Embodiment 3

[0047] The invention relates to a nitrogen-fixing and phosphorus-fixing high-efficiency biological fertilizer which uses itaconic acid to improve crop yield, comprising nitrogen-fixing fertilizer, phosphorus-fixing fertilizer and a synergist.

[0048] Described nitrogen-fixing fertilizer adopts following steps to make:

[0049]a1 itaconic acid is formulated into itaconic acid aqueous solution, the mass percent concentration of itaconic acid aqueous solution is 10%, then in itaconic acid aqueous solution, add maleic anhydride and acetic anhydride, the mole of itaconic acid and maleic anhydride and acetic anhydride The ratio is 1: 0.5: 0.6 to obtain the first mixed solution, then the first mixed solution is stirred and warmed up to 70°C, potassium persulfate is added in the mixed solution, the mass ratio of the amount of potassium persulfate to the amount of itaconic acid is 0.1, the reaction yielded the first copolymer solution.

[0050] a2 adjust the pH value of the first cop...

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Abstract

The invention discloses a high-efficiency nitrogen-fixing and phosphate-fixing bio-fertilizer for raising crop output by the use of itaconic acid. The bio-fertilizer comprises a nitrogen-fixing fertilizer, a phosphate-fixing fertilizer and a synergist. The nitrogen-fixing fertilizer and the phosphate-fixing fertilizer are both prepared by carrying out copolymerization of itaconic acid, maleic anhydride and acetic anhydride to obtain polymer and spraying the polymer onto the surface of a conventional nitrogen fertilizer or phosphate fertilizer and uniformly mixing. The synergist is composed offerric sulfate, ground phosphate rock, calcium lignosulphonate and potassium humate. The bio-fertilizer can play good nitrogen-fixing and phosphate-fixing effect. Especially through quantitative addition of acetic anhydride, the nitrogen-fixing and phosphate-fixing effect is remarkably enhanced after the polymer is combined with the conventional nitrogen fertilizer and the phosphate fertilizer. Meanwhile, with the application of the synergist, efficacy of the fertilizer is further enhanced, pests and diseases are inhibited, and crop output is improved.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a nitrogen-fixing and phosphorus-fixing high-efficiency biological fertilizer which uses itaconic acid to improve crop yield. Background technique [0002] Fertilizer is a class of substances that provide one or more essential nutrients for plants, improve soil properties, and increase soil fertility. Fertilizers are essential for plant growth and crop yields. At present, the types of fertilizers generally include phosphorus fertilizers, nitrogen fertilizers, biological fertilizers and organic fertilizers. [0003] In recent years, several patents and documents disclose the use of biodegradable polymers in combination with conventional fertilizers to form compound fertilizer products. For example, the invention patent with the patent number of 200980107905.6 discloses a double-salt fertilizer to improve crop yield. salt fertilizer. These compound fertilizer products can provide more phosphorus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 李悦明孙慧彬徐建春许军
Owner QINGDAO LANGYATAI GRP
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