Preparation method of organic chelate fertilizer

Abstract

The invention provides a preparation method of an organic chelate fertilizer. The preparation method comprises the steps that (1) typha angustifolia and crop straw are cleaned, crushed and mixed; compound bacterium liquid and a sodium bicarbonate solution are added; stirring and sealing fermentation are conducted; a potassium hydroxide solution is added; humic liquid is obtained; (2) compound amino acid and inorganic salt of medium trace elements conduct chelation reaction with the humic liquid; a pH value is adjusted by an acid solution to be 5-6; temperature rise and stirring are conducted for reaction; the pH value is adjusted by an alkaline substance to be 7; a chelation product solution is obtained; (3) a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and water are added to a mixer by weight percentage, and mixed uniformly; pelleting slurry is prepared; and (4) the chelation product solution and the pelleting slurry are driven into a guniting neutralization geosyncline, mixed uniformly, transferred to a pelletizer for guniting and pelleting, and dried, and then the organic chelate fertilizer is obtained. The organic chelate fertilizer prepared by the method is small in application amount, high in stability, and high in plant absorptivity.

Description

technical field

[0001] The invention belongs to the field of production and preparation of compound fertilizers, in particular to a method for preparing organic chelated fertilizers. Background technique

[0002] In recent years, nitrogen, phosphorus, and potassium compound fertilizers have been widely used. Due to the neglect of the addition of medium and trace elements, although the use of compound fertilizers has increased, the yield of crops has not been effectively improved, but crop diseases have aggravated , land and water pollution. To solve this problem, researchers have gradually realized the importance of adding trace elements in food. At present, most of the compound fertilizers containing medium and trace elements on the market simply add inorganic salts or oxides of medium and trace elements to nitrogen, phosphorus and potassium compound fertilizers. Due to the solidification of the soil and the antagonism between ions, this method Often cause the utilization...

Examples

preparation example Construction

[0028] A kind of preparation method of organic chelate fertilizer of the present invention, its preparation steps are:

[0029] ①Wash cattail grass and crop straws separately, crush them to 20-60 mesh, mix them at a weight ratio of 2-3:1, then add compound bacteria liquid and 15% sodium bicarbonate solution, stir for 2 hours, seal, Insulate and ferment at 60-80°C for 5 days, then add 15% potassium hydroxide solution to the fermented liquid to pH=7-8 to obtain a humic liquid, in which the mixed material of cattail grass and crop straw, compound bacterial liquid, 15 The weight ratio of % sodium bicarbonate solution is 1:0.2-0.3:0.05-0.1;

[0030] ② Add compound amino acids and inorganic salts of medium and trace elements into the chelation reaction kettle, then add humic liquid into the chelation reaction kettle, adjust the pH to 5-6 with acidic solution, and use 0.5-0.6MPa saturated steam to The solution in the chelation reaction kettle is warmed up to 50-80°C, stirred for 0.5...

Embodiment 1

[0044] Embodiment 1 Concrete preparation steps are as follows:

[0045] ①Wash 6.7kg of cattail grass and 3.3kg of wheat straw, crush them to 20 meshes, add 2kg of compound bacteria liquid and 0.5kg of 15% sodium bicarbonate solution after mixing, stir for 2 hours, seal, and keep warm at 60°C Ferment for 5 days, then add 15% potassium hydroxide solution to the fermented liquid to pH=7 to obtain 14.6kg humic liquid;

[0046] The preparation method of the composite bacteria solution is as follows: the strains of Bacillus subtilis and yeast are inserted into the expanded culture solution according to the inoculum amount of 4%, and they are stirred and cultivated for 3 days at 30°C with the isolation of oxygen. The Bacillus subtilis reaches 400 million / mL, and the yeast After the bacteria reached 200 million / mL, the composite bacterial liquid was obtained;

[0047] The formula of the expanded culture medium is: glucose 9.4g, peptone 12.4g, beef extract 4.2g, magnesium sulfate hept...

Embodiment 2

[0051] Embodiment Two Concrete preparation steps are as follows:

[0052] ①Wash 7.5kg of cattail grass and 2.5kg of corn stalks separately, crush them to 60 mesh, add 3kg of compound bacteria liquid and 1kg of 15% sodium bicarbonate solution after mixing, stir for 2 hours, seal, and keep warm for fermentation at 80°C 5 days, then add 15% potassium hydroxide solution to pH=8 in the fermented liquid, obtain 15.9kg humic liquid;

[0053] The preparation method of the composite bacteria solution is as follows: the strains of Bacillus subtilis and yeast are inserted into the expanded culture solution according to the inoculum amount of 8%, and they are stirred and cultivated for 3 days at 40°C with the isolation of oxygen. The Bacillus subtilis reaches 600 million / mL, and the yeast After the bacteria reached 400 million / mL, the composite bacterial liquid was obtained;

[0054] The formula of the expanded culture medium is: glucose 14.1g, peptone 18.6g, beef extract 6.3g, magnesium...

technical field

[0001] The invention belongs to the field of production and preparation of compound fertilizers, in particular to a method for preparing organic chelated fertilizers. Background technique

[0002] In recent years, nitrogen, phosphorus, and potassium compound fertilizers have been widely used. Due to the neglect of the addition of medium and trace elements, although the use of compound fertilizers has increased, the yield of crops has not been effectively improved, but crop diseases have aggravated , land and water pollution. To solve this problem, researchers have gradually realized the importance of adding trace elements in food. At present, most of the compound fertilizers containing medium and trace elements on the market simply add inorganic salts or oxides of medium and trace elements to nitrogen, phosphorus and potassium compound fertilizers. Due to the solidification of the soil and the antagonism between ions, this method Often cause the utilization...

Examples

preparation example Construction

[0028] A kind of preparation method of organic chelate fertilizer of the present invention, its preparation steps are:

[0029] ①Wash cattail grass and crop straws separately, crush them to 20-60 mesh, mix them at a weight ratio of 2-3:1, then add compound bacteria liquid and 15% sodium bicarbonate solution, stir for 2 hours, seal, Insulate and ferment at 60-80°C for 5 days, then add 15% potassium hydroxide solution to the fermented liquid to pH=7-8 to obtain a humic liquid, in which the mixed material of cattail grass and crop straw, compound bacterial liquid, 15 The weight ratio of % sodium bicarbonate solution is 1:0.2-0.3:0.05-0.1;

[0030] ② Add compound amino acids and inorganic salts of medium and trace elements into the chelation reaction kettle, then add humic liquid into the chelation reaction kettle, adjust the pH to 5-6 with acidic solution, and use 0.5-0.6MPa saturated steam to The solution in the chelation reaction kettle is warmed up to 50-80°C, stirred for 0.5...

Embodiment 1

[0044] Embodiment 1 Concrete preparation steps are as follows:

[0045] ①Wash 6.7kg of cattail grass and 3.3kg of wheat straw, crush them to 20 meshes, add 2kg of compound bacteria liquid and 0.5kg of 15% sodium bicarbonate solution after mixing, stir for 2 hours, seal, and keep warm at 60°C Ferment for 5 days, then add 15% potassium hydroxide solution to the fermented liquid to pH=7 to obtain 14.6kg humic liquid;

[0046] The preparation method of the composite bacteria solution is as follows: the strains of Bacillus subtilis and yeast are inserted into the expanded culture solution according to the inoculum amount of 4%, and they are stirred and cultivated for 3 days at 30°C with the isolation of oxygen. The Bacillus subtilis reaches 400 million / mL, and the yeast After the bacteria reached 200 million / mL, the composite bacterial liquid was obtained;

[0047] The formula of the expanded culture medium is: glucose 9.4g, peptone 12.4g, beef extract 4.2g, magnesium sulfate hept...

Embodiment 2

[0051] Embodiment Two Concrete preparation steps are as follows:

[0052] ①Wash 7.5kg of cattail grass and 2.5kg of corn stalks separately, crush them to 60 mesh, add 3kg of compound bacteria liquid and 1kg of 15% sodium bicarbonate solution after mixing, stir for 2 hours, seal, and keep warm for fermentation at 80°C 5 days, then add 15% potassium hydroxide solution to pH=8 in the fermented liquid, obtain 15.9kg humic liquid;

[0053] The preparation method of the composite bacteria solution is as follows: the strains of Bacillus subtilis and yeast are inserted into the expanded culture solution according to the inoculum amount of 8%, and they are stirred and cultivated for 3 days at 40°C with the isolation of oxygen. The Bacillus subtilis reaches 600 million / mL, and the yeast After the bacteria reached 400 million / mL, the composite bacterial liquid was obtained;

[0054] The formula of the expanded culture medium is: glucose 14.1g, peptone 18.6g, beef extract 6.3g, magnesium...