Soil conditioning agent and preparation method thereof

Abstract

The invention discloses a soil conditioning agent and a preparation method thereof. The soil conditioning agent comprises the following main components in percentage by weight: 90 to 96% of polyacrylamide (PAM), 1 to 3% of water soluble organic carbon (SOC), 2 to 4% of polyaspartic acid, and 1 to 3% of polyglutamic acid; the polyacrylamide (PAM) is water-in-water type anionic polyacrylamide emulsion, the molecular weight of PAM is 10,000,000 to 20,000,000, the solid content is 35 to 45%; and the water soluble organic carbon (SOC) is prepared from residues of plants. The provided soil conditioning agent can improve the physical and chemical structure of soil, increase the content of aggregates and organic matters in the soil, and enhance the water and fertilizer retaining performance of soil. Moreover, the preparation technology is simple, the production cost is low, the dissolution speed is quick, and the soil conditioning agent can be evenly applied.

Description

technical field

[0001] The invention relates to the technical field of soil conditioning, in particular to a soil conditioner containing high-molecular organic matter and a preparation method thereof. Background technique

[0002] As we all know, soil is the basis for human survival and the most important resource for the development of economy and agriculture; the farmland ecosystem is the most important basis for dissolving urban and rural domestic waste and maintaining the cycle of carbon, nitrogen, sulfur, and phosphorus. However, the shortage of cultivated land resources in my country is an indisputable fact. The per capita cultivated land area is small and the population is large. Many soils that are not suitable for agricultural use have been reclaimed as farmland. The grade is low, the situation of shoddy good is very serious, and the overall quality of cultivated land has declined, which has seriously affected the production capacity of my country's cultivated land a...

Examples

Embodiment 1

[0018] (1) Add 250kg of acrylamide, 50kg of sodium acrylate, 300kg of ammonium sulfate, 60kg of polyvinylpyrrolidone and 330kg of water into the reactor, protect it with nitrogen gas, stir and dissolve evenly, adjust the pH to 6 with 30% aqueous sodium hydroxide solution, Control the reaction temperature to 25°C, stir in a constant temperature water bath for 30 minutes, add 10kg of ammonium persulfate / sodium sulfite (mass ratio: 5:1) mixed aqueous solution with a mass concentration of 0.5% into the reaction system, and react at a constant temperature for 8 hours to obtain A water-in-water anionic polyacrylamide emulsion with a molecular weight of 10 million and a solid content of 37%; (2) add the water-in-water anionic polyacrylamide emulsion prepared in 900 kg of step (1) to the reactor, and stir; (3) While stirring, add 30kg water-soluble organic carbon (SOC) and 30kg polyglutamic acid to the solution that step (2) obtains, adjust the speed, stir; (4) stir while adding to the...

Embodiment 2

[0020] (1) Add 260kg of acrylamide, 50kg of sodium acrylate, 290kg of ammonium sulfate, 60kg of polyethylene glycol 6000 and 330kg of water into the reactor, protect it with nitrogen gas, stir and dissolve evenly, adjust the pH to 6.5 with 30% sodium hydroxide aqueous solution , control the reaction temperature to 40°C, and after stirring for 30min in a constant temperature water bath, 5 kg of a mass concentration of 0.5% ammonium persulfate / sodium sulfite (mass ratio is 5:1) mixed aqueous solution and 5 kg of a mass concentration of 0.5% azobis Add isopropylamidine saline solution into the reaction system, and after constant temperature reaction for 7 hours, a water-in-water anionic polyacrylamide emulsion with a molecular weight of 13 million and a solid content of 39% is obtained; The water-in-water type anionic polyacrylamide emulsion prepared in is stirred; (3) while stirring, add 20kg water-soluble organic carbon (SOC) and 20kg polyglutamic acid to the solution that step ...

Embodiment 3

[0022] (1) Add 260kg acrylamide, 50kg sodium acrylate, 280kg ammonium sulfate, 60kg polyethylene glycol 8000 and 340kg water into the reaction kettle, protect with nitrogen gas, stir and dissolve evenly, adjust pH to 7 with 30% sodium hydroxide aqueous solution , control the reaction temperature to 55°C, stir in a constant temperature water bath for 30 minutes, add 10 kg of azobisisopropylamidine saline solution with a mass concentration of 0.5% into the reaction system, and react at a constant temperature for 6 hours to obtain molecular weights of 18 million and 42 The water-in-water type anionic polyacrylamide emulsion of % solid content; (2) add the water-in-water type anionic polyacrylamide emulsion prepared in the 950kg step (1) in the reactor, stir; (3) stir while stirring; Add 20kg water-soluble organic carbon (SOC) and 10kg polyglutamic acid in the solution that step (2) obtains, adjust speed, stir; Aspartic acid, the solution is stirred evenly and left to stand until ...

technical field

[0001] The invention relates to the technical field of soil conditioning, in particular to a soil conditioner containing high-molecular organic matter and a preparation method thereof. Background technique

[0002] As we all know, soil is the basis for human survival and the most important resource for the development of economy and agriculture; the farmland ecosystem is the most important basis for dissolving urban and rural domestic waste and maintaining the cycle of carbon, nitrogen, sulfur, and phosphorus. However, the shortage of cultivated land resources in my country is an indisputable fact. The per capita cultivated land area is small and the population is large. Many soils that are not suitable for agricultural use have been reclaimed as farmland. The grade is low, the situation of shoddy good is very serious, and the overall quality of cultivated land has declined, which has seriously affected the production capacity of my country's cultivated land a...

Examples

Embodiment 1

[0018] (1) Add 250kg of acrylamide, 50kg of sodium acrylate, 300kg of ammonium sulfate, 60kg of polyvinylpyrrolidone and 330kg of water into the reactor, protect it with nitrogen gas, stir and dissolve evenly, adjust the pH to 6 with 30% aqueous sodium hydroxide solution, Control the reaction temperature to 25°C, stir in a constant temperature water bath for 30 minutes, add 10kg of ammonium persulfate / sodium sulfite (mass ratio: 5:1) mixed aqueous solution with a mass concentration of 0.5% into the reaction system, and react at a constant temperature for 8 hours to obtain A water-in-water anionic polyacrylamide emulsion with a molecular weight of 10 million and a solid content of 37%; (2) add the water-in-water anionic polyacrylamide emulsion prepared in 900 kg of step (1) to the reactor, and stir; (3) While stirring, add 30kg water-soluble organic carbon (SOC) and 30kg polyglutamic acid to the solution that step (2) obtains, adjust the speed, stir; (4) stir while adding to the...

Embodiment 2

[0020] (1) Add 260kg of acrylamide, 50kg of sodium acrylate, 290kg of ammonium sulfate, 60kg of polyethylene glycol 6000 and 330kg of water into the reactor, protect it with nitrogen gas, stir and dissolve evenly, adjust the pH to 6.5 with 30% sodium hydroxide aqueous solution , control the reaction temperature to 40°C, and after stirring for 30min in a constant temperature water bath, 5 kg of a mass concentration of 0.5% ammonium persulfate / sodium sulfite (mass ratio is 5:1) mixed aqueous solution and 5 kg of a mass concentration of 0.5% azobis Add isopropylamidine saline solution into the reaction system, and after constant temperature reaction for 7 hours, a water-in-water anionic polyacrylamide emulsion with a molecular weight of 13 million and a solid content of 39% is obtained; The water-in-water type anionic polyacrylamide emulsion prepared in is stirred; (3) while stirring, add 20kg water-soluble organic carbon (SOC) and 20kg polyglutamic acid to the solution that step ...

Embodiment 3

[0022] (1) Add 260kg acrylamide, 50kg sodium acrylate, 280kg ammonium sulfate, 60kg polyethylene glycol 8000 and 340kg water into the reaction kettle, protect with nitrogen gas, stir and dissolve evenly, adjust pH to 7 with 30% sodium hydroxide aqueous solution , control the reaction temperature to 55°C, stir in a constant temperature water bath for 30 minutes, add 10 kg of azobisisopropylamidine saline solution with a mass concentration of 0.5% into the reaction system, and react at a constant temperature for 6 hours to obtain molecular weights of 18 million and 42 The water-in-water type anionic polyacrylamide emulsion of % solid content; (2) add the water-in-water type anionic polyacrylamide emulsion prepared in the 950kg step (1) in the reactor, stir; (3) stir while stirring; Add 20kg water-soluble organic carbon (SOC) and 10kg polyglutamic acid in the solution that step (2) obtains, adjust speed, stir; Aspartic acid, the solution is stirred evenly and left to stand until ...