Lignin slow-release water-soluble fertilizer and preparation method thereof

Abstract

The invention belongs to the technical field of fertilizers, and in particular relates to a lignin slow-release water-soluble fertilizer and a preparation method thereof. The lignin slow-release water-soluble fertilizer is prepared by adding a strong activating agent into an organic straw liquid, lignin, lignin-degrading enzyme; when the lignin is solid lignin, the weight parts of the organic straw liquid, the solid lignin and the lignin-degrading enzyme are 60-90 parts of the organic straw liquid, 10-40 parts of the solid lignin and 1-3 parts of the lignin-degrading enzyme; when the lignin is liquid lignin, the weight parts are 10-30 parts of the organic straw liquid, 70-100 parts of the liquid lignin and 1-3 parts of the lignin-degrading enzyme. The lignin slow-release water-soluble fertilizer provided by the invention has a slow-release function and water-soluble fertilizer properties as well, environmental pollution caused by comprehensive utilization of biomass raw materials is reduced, problems that a conventional slow-release water-soluble fertilizer is high in production cost, incomplete in nutrient component, relatively poor in fertility and the like can be solved, and modern organic planting of integral water and fertilizers can be achieved.

Description

technical field

[0001] The invention belongs to the technical field of fertilizers, and in particular relates to a lignin slow-release water-soluble fertilizer and a preparation method thereof. Background technique

[0002] With the rapid development of agricultural technology, the use of slow-release fertilizers is becoming more and more extensive. However, the fertilizers currently used in agriculture can be absorbed and utilized by crops, and most of them are lost due to their own and external factors. This not only reduces the utilization rate of fertilizer, but also brings serious pollution to the environment. Therefore, how to improve the utilization rate of fertilizers in agriculture is an important problem to be solved urgently both at home and abroad.

[0003] Traditional compound fertilizers are easy to cause fertilizer loss, eutrophication of water bodies, serious damage to soil structure, and nutrient imbalance. The quality of the soil environment directly aff...

Examples

Embodiment 1

[0056] (1) Add straw organic liquid, solid lignin and lignin degrading enzyme into the reactor according to the mass ratio of 60:10:1.

[0057] (2) Seal the reaction kettle after feeding, control the temperature at 40°C, mix and stir for 4 hours to obtain a mixed solution;

[0058] (3) Transfer the mixed liquid obtained in step (2) to a vacuum decompression concentrator for concentration to obtain a concentrated organic liquid with a water content of 80% and an organic matter content of 5%.

[0059] (4) Adding a strong activator to the concentrated organic liquid obtained in step (3), activating it while oxidizing it, and preparing a lignin slow-release water-soluble fertilizer.

[0060] The lignin degrading enzyme used is manganese peroxidase, which is a commercially available product.

[0061] The strong activator used is sodium hypochlorite, which is a commercially available product, and the addition amount is 2% relative to the quality of the concentrated organic liquid. ...

Embodiment 2

[0065] (1) Add straw organic liquid, solid lignin and lignin degrading enzyme into the reactor according to the mass ratio of 75:25:2.

[0066] (2) Seal the reaction kettle after feeding, control the temperature at 40°C, mix and stir for 4 hours to obtain a mixed solution;

[0067] (3) Transfer the mixed liquid obtained in step (2) to a vacuum decompression concentrator for concentration to obtain a concentrated organic liquid with a water content of 80% and an organic matter content of 5%.

[0068] (4) Adding a strong activator to the concentrated organic liquid obtained in step (3), activating it while oxidizing it, and preparing a lignin slow-release water-soluble fertilizer.

[0069] The lignin degrading enzyme used is lignin peroxidase, a commercially available product.

[0070] The strong activator used is calcium hypochlorite, a commercially available product, and the addition amount is 4% relative to the mass of the concentrated organic liquid.

[0071] The solid lig...

Embodiment 3

[0074] (1) Add straw organic liquid, solid lignin and lignin degrading enzyme into the reactor according to the mass ratio of 60:10:1.

[0075] (2) Seal the reaction kettle after feeding, control the temperature at 40°C, mix and stir for 4 hours to obtain a mixed solution;

[0076] (3) Transfer the mixed liquid obtained in step (2) to a vacuum decompression concentrator for concentration to obtain a concentrated organic liquid with a water content of 80% and an organic matter content of 5%.

[0077] (4) Adding a strong activator to the concentrated organic liquid obtained in step (3), activating it while oxidizing it, and preparing a lignin slow-release water-soluble fertilizer.

[0078] The lignin degrading enzyme used is a mixture of manganese peroxidase and laccase, the mass ratio of which is 1:1, and the manganese peroxidase and laccase are commercially available products.

[0079] The strong activator used is ethyl hypochlorite, a commercially available product, and the ...

technical field

[0001] The invention belongs to the technical field of fertilizers, and in particular relates to a lignin slow-release water-soluble fertilizer and a preparation method thereof. Background technique

[0002] With the rapid development of agricultural technology, the use of slow-release fertilizers is becoming more and more extensive. However, the fertilizers currently used in agriculture can be absorbed and utilized by crops, and most of them are lost due to their own and external factors. This not only reduces the utilization rate of fertilizer, but also brings serious pollution to the environment. Therefore, how to improve the utilization rate of fertilizers in agriculture is an important problem to be solved urgently both at home and abroad.

[0003] Traditional compound fertilizers are easy to cause fertilizer loss, eutrophication of water bodies, serious damage to soil structure, and nutrient imbalance. The quality of the soil environment directly aff...

Examples

Embodiment 1

[0056] (1) Add straw organic liquid, solid lignin and lignin degrading enzyme into the reactor according to the mass ratio of 60:10:1.

[0057] (2) Seal the reaction kettle after feeding, control the temperature at 40°C, mix and stir for 4 hours to obtain a mixed solution;

[0058] (3) Transfer the mixed liquid obtained in step (2) to a vacuum decompression concentrator for concentration to obtain a concentrated organic liquid with a water content of 80% and an organic matter content of 5%.

[0059] (4) Adding a strong activator to the concentrated organic liquid obtained in step (3), activating it while oxidizing it, and preparing a lignin slow-release water-soluble fertilizer.

[0060] The lignin degrading enzyme used is manganese peroxidase, which is a commercially available product.

[0061] The strong activator used is sodium hypochlorite, which is a commercially available product, and the addition amount is 2% relative to the quality of the concentrated organic liquid. ...

Embodiment 2

[0065] (1) Add straw organic liquid, solid lignin and lignin degrading enzyme into the reactor according to the mass ratio of 75:25:2.

[0066] (2) Seal the reaction kettle after feeding, control the temperature at 40°C, mix and stir for 4 hours to obtain a mixed solution;

[0067] (3) Transfer the mixed liquid obtained in step (2) to a vacuum decompression concentrator for concentration to obtain a concentrated organic liquid with a water content of 80% and an organic matter content of 5%.

[0068] (4) Adding a strong activator to the concentrated organic liquid obtained in step (3), activating it while oxidizing it, and preparing a lignin slow-release water-soluble fertilizer.

[0069] The lignin degrading enzyme used is lignin peroxidase, a commercially available product.

[0070] The strong activator used is calcium hypochlorite, a commercially available product, and the addition amount is 4% relative to the mass of the concentrated organic liquid.

[0071] The solid lig...

Embodiment 3

[0074] (1) Add straw organic liquid, solid lignin and lignin degrading enzyme into the reactor according to the mass ratio of 60:10:1.

[0075] (2) Seal the reaction kettle after feeding, control the temperature at 40°C, mix and stir for 4 hours to obtain a mixed solution;

[0076] (3) Transfer the mixed liquid obtained in step (2) to a vacuum decompression concentrator for concentration to obtain a concentrated organic liquid with a water content of 80% and an organic matter content of 5%.

[0077] (4) Adding a strong activator to the concentrated organic liquid obtained in step (3), activating it while oxidizing it, and preparing a lignin slow-release water-soluble fertilizer.

[0078] The lignin degrading enzyme used is a mixture of manganese peroxidase and laccase, the mass ratio of which is 1:1, and the manganese peroxidase and laccase are commercially available products.

[0079] The strong activator used is ethyl hypochlorite, a commercially available product, and the ...

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