Saline-alkali soil modifier prepared based on animal enzyme and preparation process of saline-alkali soil modifier
By preparing a saline-alkali land conditioner containing animal enzyme fermentation liquid, the problems of high water consumption, high cost, and pollution from chemical conditioners in saline-alkali land improvement have been solved, achieving an environmentally friendly and efficient improvement effect for saline-alkali land.
Patent Information
- Application Number
- CN202511065870.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2025-11-04
AI Technical Summary
Existing methods for improving saline-alkali land suffer from problems such as high water consumption, high cost, potential soil compaction and secondary pollution from chemical amendments, and long biological improvement cycles. There is a lack of environmentally friendly, efficient, and cost-effective amendments and preparation processes.
Using animal enzyme fermentation broth as the main raw material, combined with humic acid, microbial agents, plant-derived water-retaining agents, natural organic acids, trace element chelates, sodium alginate and sodium lignosulfonate, a saline-alkali land conditioner is prepared through anaerobic fermentation, mixing, stirring and post-treatment. The pH value is adjusted and the mixture is pulverized to form a conditioner with a variety of bioactive components.
It effectively neutralizes soil alkalinity, lowers soil pH, promotes the decomposition of organic matter, increases soil porosity, improves nutrient availability, reduces water and nutrient loss, improves soil structure and fertility, and prevents iron deficiency chlorosis in plants.
Smart Images
Figure CN120888310A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of soil improvement, in particular to a saline-alkali soil improver based on animal enzymes and a preparation process thereof. BACKGROUND
[0002] Saline-alkali soil is a general term for saline soil, alkaline soil and various salinized and alkalized soils. Due to its high salt and alkali characteristics, saline-alkali soil seriously affects the normal physiological functions of microorganisms in the soil and plant root systems, leading to a decline in soil fertility and inhibition of crop growth, and even death, which greatly limits the effective use of land.
[0003] At present, the methods for improving saline-alkali soil mainly include physical improvement (such as salt washing by irrigation and drainage, deep ploughing and deep loosening), chemical improvement (such as applying gypsum, ferrous sulfate and other chemical improvers) and biological improvement (such as planting salt-tolerant plants). The physical improvement method requires a large amount of water resources and has a high cost; the chemical improver can reduce the soil pH and salt content to a certain extent, but long-term use may cause soil compaction and secondary pollution; the biological improvement method has a long cycle and is difficult to achieve ideal improvement effect in a short period of time. Therefore, it is urgent to develop an environmentally friendly, efficient and cost-effective saline-alkali soil improver and preparation process.
[0004] Animal enzymes are a mixture of various bioactive components produced by the fermentation of animal tissues or secretions under the action of microorganisms, containing rich organic acids, enzymes, amino acids, polysaccharides and other substances. Organic acids can neutralize the alkalinity of the soil, enzymes can promote the decomposition and transformation of organic matter in the soil, and amino acids and polysaccharides can provide nutrients for soil microorganisms and plants. However, there is no mature technology for applying animal enzymes to saline-alkali soil improvers at present. SUMMARY
[0005] (I) Technical problems solved
[0006] In view of the deficiencies of the prior art, the present application provides a saline-alkali soil improver based on animal enzymes and a preparation process thereof, which solves the problems raised in the background art.
[0007] (II) Technical solutions
[0008] To achieve the above-mentioned purposes, the present application is implemented by the following technical solutions: a saline-alkali soil improver based on animal enzymes, comprising the following components by weight: animal enzyme fermentation liquor 30-50 parts, humic acid 10-20 parts, microbial agent 5-10 parts, plant source water retaining agent 5-10 parts, natural organic acid 2-8 parts, trace element chelate 1-5 parts, sodium alginate 3-8 parts, sodium lignosulfonate 2-5 parts, ferrous sulfate 1-3 parts.
[0009] The animal enzyme fermentation liquor is made of animal waste through anaerobic fermentation, and contains organic acid, enzymes and active microorganisms.
[0010] Preferably, the saline-alkali soil improver made of animal enzyme comprises the following components in parts by weight: 40 parts of animal enzyme fermentation liquor, 15 parts of humic acid, 8 parts of microbial agent, 8 parts of plant source water retaining agent, 5 parts of natural organic acid, 3 parts of trace element chelate, 5 parts of sodium alginate, 4 parts of sodium lignosulfonate and 2 parts of ferrous sulfate.
[0011] Preferably, the animal waste comprises one or more of livestock and poultry manure and aquatic processing waste, the anaerobic fermentation temperature is 30-45 DEG C, and the fermentation time is 15-30 days.
[0012] Preferably, the microbial agent is one or more of Bacillus subtilis, phosphorus solubilizing bacteria and potassium solubilizing bacteria, and the effective viable count is greater than or equal to 2.0*10 8 CFU / g.
[0013] Preferably, the plant source water retaining agent is a starch-based or cellulose-based high molecular water absorbing material, and the water absorption ratio is greater than or equal to 300 times.
[0014] Preferably, the natural organic acid is one or more of citric acid, malic acid and lactic acid, and the pH value is adjusted to 4.5-6.0.
[0015] Preferably, the trace element chelate comprises EDTA chelates of iron, zinc, manganese and boron, and the total content is greater than or equal to 5%.
[0016] The application further discloses a preparation process of the saline-alkali soil improver made of animal enzyme.
[0017] Step one: animal enzyme preparation
[0018] The animal waste is mixed with water at a mass ratio of 1: (2-3), 0.5%-1% of yeast is added, and anaerobic fermentation is carried out at 30-45 DEG C for 15-30 days to obtain the animal enzyme fermentation liquor.
[0019] Step two: mixing and blending
[0020] The humic acid, plant source water retaining agent, natural organic acid, trace element chelate, sodium alginate, sodium lignosulfonate and ferrous sulfate are added to the animal enzyme fermentation liquor in proportion, and stirred uniformly to obtain a mixed liquor.
[0021] Step three: stirring reaction
[0022] The microbial agent is added into the mixed solution, and the reaction is stirred at 25-30 DEG C for 2-3 hours, and the pH is adjusted to 4.5-6.0.
[0023] Step four: post-treatment:
[0024] The reacted material is dried and crushed to 80-100 mesh, and the saline-alkali land modifier is prepared after sterilization and drying.
[0025] (Three) beneficial effects
[0026] The application provides a saline-alkali land modifier prepared based on animal enzymes and a preparation process thereof, and has the following beneficial effects:
[0027] 1. The saline-alkali land modifier uses animal enzyme fermentation liquor as a main raw material, and the organic acid in the animal enzyme fermentation liquor can neutralize the alkalinity of the soil and reduce the pH value of the soil; the enzymes contained in the animal enzyme fermentation liquor can promote the decomposition of organic matter in the soil, increase the soil porosity, and improve the soil structure; the amino acids and polysaccharides provide nutrition for soil microorganisms and plants, and enhance the soil fertility.
[0028] 2. The humic acid can combine with sodium ions in the soil to reduce the content of exchangeable sodium in the soil and reduce soil compaction; the Bacillus subtilis in the microbial agent can secrete various enzymes and antibiotics to inhibit the growth of harmful microorganisms, and the phosphorus-solubilizing bacteria and potassium-solubilizing bacteria can convert the insoluble phosphorus and potassium in the soil into forms that can be absorbed by plants, thereby improving the availability of soil nutrients.
[0029] 3. The sodium alginate and sodium lignosulfonate have good water and fertilizer retention properties, and can reduce the loss of water and nutrients in the soil; the ferrous sulfate can adjust the soil pH value and supply iron elements to plants to prevent plant iron deficiency chlorosis. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 The figure is a preparation process flowchart of the application. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.
[0032] Example one:
[0033] This invention provides a saline-alkali land conditioner based on animal enzymes, comprising the following components by weight: 30 parts animal enzyme fermentation liquid, 10 parts humic acid, 5 parts microbial inoculant, 5 parts plant-derived water-retaining agent, 2 parts natural organic acid, 1 part trace element chelate, 3 parts sodium alginate, 2 parts sodium lignin sulfonate, and 1 part ferrous sulfate.
[0034] Among them, animal enzyme fermentation liquid is made from animal waste through anaerobic fermentation. Animal enzyme fermentation liquid contains organic acids, enzymes and active microorganisms.
[0035] Animal waste, including livestock and poultry manure, is fermented at an anaerobic temperature of 30°C for 15 days.
[0036] The microbial agent is Bacillus subtilis, and the effective viable count is ≥2.0×10⁻⁶. 8 CFU / g.
[0037] Plant-derived water-retaining agents are starch-based polymer water-absorbing materials with a water absorption rate of ≥300 times.
[0038] The natural organic acid is citric acid, and the pH value is adjusted to 4.5.
[0039] Trace element chelates include EDTA chelates of iron and zinc, with a total content of ≥5%.
[0040] like Figure 1 As shown, this embodiment of the invention also provides a preparation process for a saline-alkali land conditioner based on animal enzymes. The process includes the following steps:
[0041] Step 1: Preparation of animal enzymes:
[0042] Animal waste and water were mixed at a mass ratio of 1:2, and 0.5% yeast was added. The mixture was then anaerobic fermented at 30°C for 15 days, and the animal enzyme fermentation liquid was obtained by filtration.
[0043] Step 2: Mixing and blending:
[0044] Add humic acid, plant-derived water-retaining agent, natural organic acid, trace element chelate, sodium alginate, sodium lignosulfonate and ferrous sulfate to the animal enzyme fermentation liquid in proportion, stir evenly to obtain a mixed liquid.
[0045] Step 3: Stirring reaction:
[0046] Add the microbial agent to the above mixture, stir and react at 25°C for 2 hours, and adjust the pH to 4.5;
[0047] Step 4: Post-processing:
[0048] The reaction material is dried and crushed to 80 meshes to prepare the saline-alkali soil improver after sterilization and drying.
[0049] Example two:
[0050] The saline-alkali soil improver prepared based on animal enzyme provided by the embodiment comprises the following components in parts by weight: 40 parts of animal enzyme fermentation liquor, 15 parts of humic acid, 8 parts of microbial agent, 8 parts of plant source water-retaining agent, 5 parts of natural organic acid, 3 parts of trace element chelate, 5 parts of sodium alginate, 4 parts of sodium lignosulfonate and 2 parts of ferrous sulfate.
[0051] The animal enzyme fermentation liquor is made of animal waste through anaerobic fermentation, and contains organic acid, enzymes and active microorganisms.
[0052] The animal waste comprises aquatic processing leftovers, the anaerobic fermentation temperature is 40 DEG C, and the fermentation time is 25 days.
[0053] The microbial agent is phosphorus-dissolving bacteria, and the effective viable count is greater than or equal to 2.0 x 10 8 CFU / g.
[0054] The plant source water-retaining agent is cellulose-based high-molecular water-absorbing material, and the water absorption ratio is greater than or equal to 300 times.
[0055] The natural organic acid is malic acid, and the pH value is adjusted to 5.0.
[0056] The trace element chelate comprises EDTA chelates of manganese and boron, and the total content is greater than or equal to 5%.
[0057] As shown in the formula (I), the embodiment of the present application further provides a preparation process of the saline-alkali soil improver prepared based on animal enzyme. Figure 1
[0058] Step one: animal enzyme preparation
[0059] The animal waste is mixed with water at a mass ratio of 1:3, 0.8% of yeast is added, anaerobic fermentation is carried out at 40 DEG C for 25 days, and the animal enzyme fermentation liquor is obtained by filtration;
[0060] Step two: mixing and blending
[0061] The humic acid, plant source water-retaining agent, natural organic acid, trace element chelate, sodium alginate, sodium lignosulfonate and ferrous sulfate are added to the animal enzyme fermentation liquor in proportion, stirred uniformly, and the mixed liquor is obtained;
[0062] Step three: stirring reaction
[0063] Add the microbial agent to the above mixture, stir and react at 28°C for 3 hours, and adjust the pH to 5.0;
[0064] Step 4: Post-processing:
[0065] The reacted material is dried and pulverized to 90 mesh, then sterilized and dried to obtain a saline-alkali land conditioner.
[0066] Example 3:
[0067] This invention provides a saline-alkali land conditioner based on animal enzymes, comprising the following components by weight: 50 parts animal enzyme fermentation liquid, 20 parts humic acid, 10 parts microbial inoculant, 10 parts plant-derived water-retaining agent, 8 parts natural organic acid, 5 parts trace element chelate, 8 parts sodium alginate, 5 parts sodium lignin sulfonate, and 3 parts ferrous sulfate.
[0068] Among them, animal enzyme fermentation liquid is made from animal waste through anaerobic fermentation. Animal enzyme fermentation liquid contains organic acids, enzymes and active microorganisms.
[0069] Animal waste includes livestock and poultry manure and aquatic processing by-products. The anaerobic fermentation temperature is 45℃ and the fermentation time is 30 days.
[0070] The microbial inoculant consists of Bacillus subtilis, phosphate-solubilizing bacteria, and potassium-solubilizing bacteria, with an effective viable count ≥ 2.0 × 10⁻⁶. 8 CFU / g.
[0071] Plant-derived water-retaining agents are cellulose-based polymeric water-absorbing materials with a water absorption ratio of ≥300 times.
[0072] The natural organic acids are citric acid, malic acid, and lactic acid, and the pH value is adjusted to 6.0.
[0073] Trace element chelates include EDTA chelates of iron, zinc, manganese, and boron, with a total content ≥5%.
[0074] like Figure 1 As shown, this embodiment of the invention also provides a preparation process for a saline-alkali land conditioner based on animal enzymes. The process includes the following steps:
[0075] Step 1: Preparation of animal enzymes:
[0076] Animal waste and water were mixed at a mass ratio of 1:3, 1% yeast was added, and the mixture was anaerobic fermented at 45°C for 30 days. The animal enzyme fermentation liquid was then filtered to obtain the fermentation liquid.
[0077] Step 2: Mixing and blending:
[0078] Humic acid, plant source water-retaining agent, natural organic acid, trace element chelate, sodium alginate, sodium lignosulfonate and ferrous sulfate are added into the animal enzyme fermentation liquor in proportion, stirred uniformly to obtain a mixed liquor;
[0079] Step three: stirring reaction:
[0080] The microbial agent is added into the above mixed liquor, stirred at 30℃ for 3 hours, and the pH is adjusted to 6.0;
[0081] Step four: post-treatment:
[0082] The reacted material is dried and crushed to 100 mesh, sterilized and dried to obtain the saline-alkali soil improver.
[0083] Comparative example:
[0084] A saline-alkali soil improver comprises the following components in parts by weight: humic acid 10 parts, plant source water-retaining agent 5 parts, natural organic acid 2 parts, sodium alginate 3 parts, sodium lignosulfonate 2 parts, and ferrous sulfate 1 part.
[0085] The plant source water-retaining agent is a starch-based high molecular water-absorbing material, and the water absorption ratio is ≥300 times.
[0086] The natural organic acid is citric acid, and the pH value is adjusted to 4.5.
[0087] A preparation process of a saline-alkali soil improver comprises the following steps:
[0088] Step one: mixing and blending:
[0089] Humic acid, plant source water-retaining agent, natural organic acid, sodium alginate, sodium lignosulfonate and ferrous sulfate are stirred uniformly in proportion to obtain a mixed liquor;
[0090] Step two: post-treatment:
[0091] The reacted material is dried and crushed to 80 mesh, sterilized and dried to obtain the saline-alkali soil improver.
[0092] Experimental example:
[0093] Four saline-alkali soil test fields are selected and marked as A, B, C and D. The saline-alkali soil improver prepared in Example 1 is applied to field A, the saline-alkali soil improver prepared in Example 2 is applied to field B, the saline-alkali soil improver prepared in Example 3 is applied to field C, and the saline-alkali soil improver prepared in the comparative example is applied to field D. The application amount of the improver is 50 kg per mu, and routine irrigation and field management are carried out after application.
[0094] The soil pH value, salt content and organic matter content are measured before and 3 months after the application of the improver, and the results are shown in the following table:
[0095]
[0096] In summary, the soil pH value and salt content of the A, B and C test fields applying the saline-alkali soil improver of the present application are significantly reduced, and the organic matter content is obviously improved, indicating that the improver can effectively improve the saline-alkali soil environment.
[0097] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A saline-alkali land conditioner based on animal enzymes, characterized in that: It includes the following components by weight: 30-50 parts animal enzyme fermentation broth, 10-20 parts humic acid, 5-10 parts microbial inoculant, 5-10 parts plant-derived water-retaining agent, 2-8 parts natural organic acid, 1-5 parts trace element chelate, 3-8 parts sodium alginate, 2-5 parts sodium lignosulfonate, and 1-3 parts ferrous sulfate. The animal enzyme fermentation liquid is made from animal waste through anaerobic fermentation and contains organic acids, enzymes and active microorganisms.
2. The saline-alkali land conditioner based on animal enzymes according to claim 1, characterized in that: It includes the following components by weight: 40 parts animal enzyme fermentation liquid, 15 parts humic acid, 8 parts microbial inoculant, 8 parts plant-derived water-retaining agent, 5 parts natural organic acid, 3 parts trace element chelate, 5 parts sodium alginate, 4 parts sodium lignosulfonate, and 2 parts ferrous sulfate.
3. The saline-alkali land conditioner based on animal enzymes according to claim 1, characterized in that: The animal waste includes one or more of livestock and poultry manure and aquatic processing by-products, and the anaerobic fermentation temperature is 30-45℃, with a fermentation time of 15-30 days.
4. The saline-alkali land conditioner based on animal enzymes according to claim 1, characterized in that: The microbial agent is one or more of Bacillus subtilis, phosphate-solubilizing bacteria, and potassium-solubilizing bacteria, and has an effective viable count ≥ 2.0 × 10⁻⁶. 8 CFU / g.
5. The saline-alkali land conditioner based on animal enzymes according to claim 1, characterized in that: The plant-derived water-retaining agent is a starch-based or cellulose-based polymer water-absorbing material with a water absorption ratio of ≥300 times.
6. The saline-alkali land conditioner based on animal enzymes according to claim 1, characterized in that: The natural organic acid is one or more of citric acid, malic acid, and lactic acid, and the pH value is adjusted to 4.5-6.
0.
7. The saline-alkali land conditioner based on animal enzymes according to claim 1, characterized in that: The trace element chelates include EDTA chelates of iron, zinc, manganese, and boron, with a total content of ≥5%.
8. A preparation process for a saline-alkali land conditioner based on animal enzymes, based on the saline-alkali land conditioner based on any one of claims 1-7, characterized in that: Includes the following steps: Step 1: Preparation of animal enzymes: Animal waste and water are mixed at a mass ratio of 1:(2-3), 0.5%-1% yeast is added, and the mixture is anaerobic fermented at 30-45℃ for 15-30 days. The animal enzyme fermentation liquid is then filtered to obtain the fermentation liquid. Step 2: Mixing and blending: Add humic acid, plant-derived water-retaining agent, natural organic acid, trace element chelate, sodium alginate, sodium lignosulfonate and ferrous sulfate to the animal enzyme fermentation liquid in proportion, stir evenly to obtain a mixed liquid. Step 3: Stirring reaction: Add the microbial agent to the above mixture, stir and react at 25-30℃ for 2-3 hours, and adjust the pH to 4.5-6.0; Step 4: Post-processing: The reacted material is dried and pulverized to 80-100 mesh, then sterilized and dried to obtain a saline-alkali land conditioner.