CN117501891A - Method for promoting straw decomposition by using artificial humic acid - Google Patents
Method for promoting straw decomposition by using artificial humic acid Download PDFInfo
- Publication number
- CN117501891A CN117501891A CN202311472185.1A CN202311472185A CN117501891A CN 117501891 A CN117501891 A CN 117501891A CN 202311472185 A CN202311472185 A CN 202311472185A CN 117501891 A CN117501891 A CN 117501891A
- Authority
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- China
- Prior art keywords
- straw
- humic acid
- artificial humic
- soil
- decomposition
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- 239000010902 straw Substances 0.000 title claims abstract description 104
- 239000004021 humic acid Substances 0.000 title claims abstract description 69
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000001737 promoting effect Effects 0.000 title claims abstract description 30
- 239000002689 soil Substances 0.000 claims abstract description 44
- 240000008042 Zea mays Species 0.000 claims description 14
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 14
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 14
- 235000005822 corn Nutrition 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 241000209140 Triticum Species 0.000 claims description 2
- 235000021307 Triticum Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 230000033558 biomineral tissue development Effects 0.000 abstract description 2
- 230000035558 fertility Effects 0.000 abstract description 2
- 230000004060 metabolic process Effects 0.000 abstract description 2
- 235000015097 nutrients Nutrition 0.000 abstract description 2
- 235000016709 nutrition Nutrition 0.000 abstract description 2
- 230000035764 nutrition Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract 2
- 230000007797 corrosion Effects 0.000 abstract 2
- 239000005431 greenhouse gas Substances 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 239000001569 carbon dioxide Substances 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002688 soil aggregate Substances 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/10—Addition or removal of substances other than water or air to or from the material during the treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Biochemistry (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
A method for promoting straw decomposition by using artificial humic acid relates to a straw decomposition method. The invention aims to solve the problems that the straw returning decomposition speed is low, the straw decomposition promotes the mineralization of organic carbon in soil and the like. The method comprises the following steps: the method is characterized in that the straw is crushed and then evenly scattered on the soil, the artificial humic acid is evenly sprayed and then ploughed on the soil, so that the straw, the artificial humic acid and the soil are fully mixed and ploughed, and the method for promoting the straw decomposition by utilizing the artificial humic acid is completed. The artificial humic acid can adjust the physical and chemical properties of soil, so that available nutrients in the soil are preferentially supplied to the growth of the corrosion promoting flora, a good nutrition habitat is provided for the metabolism of the corrosion promoting flora, the decomposition rate of the returning straw is effectively promoted, the emission of greenhouse gases is reduced, organic matters formed by decomposing and converting the straw are fixed in the soil, and the soil fertility is improved.
Description
Technical Field
The invention relates to a straw decomposition method.
Background
China is one of the countries with the highest straw yield in the world, and the 2022-year straw yield is 9.77 hundred million tons. However, in order to save financial resources and manpower, the straw is generally directly burnt, the soil erosion is accelerated by straw burning, the soil quality and the organic carbon content of the soil are affected, and moreover, the environment is polluted by straw burning. The straw returning can effectively solve the problem of straw burning, and is also beneficial to supplementing soil organic matters, promoting the formation of soil aggregate structures, improving the physical properties of soil, increasing the water and fertilizer retention capacity of the soil, enhancing the permeability of the soil and reducing the volume weight of the soil. The straw is directly returned to the field, so that the problems of low decomposition speed, difficult degradation of lignocellulose substances, influence on the growth of aftercrop and the like exist, and the popularization and the application of the technology are limited to a certain extent.
Disclosure of Invention
The invention aims to solve the problems of low straw returning decomposition speed, promotion of mineralization of organic carbon in soil by straw decomposition and the like, and provides a method for promoting straw returning decomposition by using artificial humic acid.
A method for promoting straw decomposition by using artificial humic acid comprises the following steps:
the method is characterized in that the straw is crushed and then evenly scattered on the soil, the artificial humic acid is evenly sprayed and then ploughed on the soil, so that the straw, the artificial humic acid and the soil are fully mixed, ploughed and decomposed, and the method for promoting the straw decomposition by utilizing the artificial humic acid is completed.
The principle of the invention is as follows:
the artificial humic acid with the structure and the function highly similar to those of humus formed in natural soil is synthesized by taking agricultural waste biomass such as straw and the like as raw materials through hydrothermal humification reaction, the artificial humic acid can enhance the carbon holding capacity of farmland soil under different climatic conditions, the soil fertility is improved, the synthetic time of the artificial humic acid is short, the preparation cost is low, and the possibility is provided for large-scale agricultural production and application; research shows that the artificial humic acid can improve the physicochemical property of soil, so that the available nutrients in the soil preferentially promote the growth of the decay promoting flora, and a good nutrition habitat is provided for the metabolism of the decay promoting flora, thereby promoting the decay rate of returning the organic material to the field.
The invention has the beneficial effects that:
1. the artificial humic acid used in the invention has wide sources, low cost, easy obtainment, low production cost and easy popularization and application.
2. According to the invention, the artificial humic acid is applied in the straw returning process, so that the decomposition of the straw can be promoted, the total organic carbon content of the soil is increased, and the emission of carbon dioxide is reduced.
3. The invention has simple operation and good economic and ecological benefits.
Drawings
FIG. 1 shows the decomposition rate of straw after straw returning with artificial humic acid;
FIG. 2 shows the decomposition rate of straw after straw returning with artificial humic acid;
FIG. 3 shows the change of the carbon dioxide emission amount after straw returning by using artificial humic acid.
Detailed Description
The technical scheme of the invention is not limited to the specific embodiments listed below, and also includes any combination of the specific embodiments.
The first embodiment is as follows: the method for promoting straw decomposition by using artificial humic acid comprises the following steps:
the method is characterized in that the straw is crushed and then evenly scattered on the soil, the artificial humic acid is evenly sprayed and then ploughed on the soil, so that the straw, the artificial humic acid and the soil are fully mixed, ploughed and decomposed, and the method for promoting the straw decomposition by utilizing the artificial humic acid is completed.
The second embodiment is as follows: the present embodiment differs from the specific embodiment in that: the straw is corn straw, rice straw or wheat straw. The other steps are the same as in the first embodiment.
And a third specific embodiment: this embodiment differs from the first or second embodiment in that: crushing the straw into 5 cm-15 cm. The other steps are the same as those of the first or second embodiment.
The specific embodiment IV is as follows: one difference between this embodiment and the first to third embodiments is that: the throwing thickness of straw powder on the soil is less than or equal to 8cm; the ploughing depth is 0 cm-40 cm. The other steps are the same as those of the first to third embodiments.
Fifth embodiment: one to four differences between the present embodiment and the specific embodiment are: the artificial humic acid is solid artificial humic acid or liquid artificial humic acid. Other steps are the same as those of the first to fourth embodiments.
Specific embodiment six: the present embodiment differs from the first to fifth embodiments in that: the liquid artificial humic acid is obtained by taking sodium hydroxide solution, potassium hydroxide solution or ammonia water solution as a solvent and dissolving solid artificial humic acid; the concentration of the liquid artificial humic acid is 0.05 g/L-5 g/L. Other steps are the same as those of the first to fifth embodiments.
Seventh embodiment: one difference between the present embodiment and the first to sixth embodiments is that: the concentration of the sodium hydroxide solution is 0.4 g/L-40 g/L. Other steps are the same as those of embodiments one to six.
Eighth embodiment: one difference between the present embodiment and the first to seventh embodiments is that: the concentration of the potassium hydroxide solution is 0.56 g/L-56 g/L. The other steps are the same as those of embodiments one to seven.
Detailed description nine: one of the differences between this embodiment and the first to eighth embodiments is: the mass fraction of the ammonia water solution is 0.05-5%. Other steps are the same as those of embodiments one to eight.
Detailed description ten: the present embodiment differs from the first to ninth embodiments in that: the mass ratio of the artificial humic acid to the straw is (0.1-5 g) 1kg. The other steps are the same as those of embodiments one to nine.
The following examples are used to verify the benefits of the present invention:
example 1: a method for promoting straw decomposition by using artificial humic acid comprises the following steps:
weighing 100g of corn straw, placing the corn straw into an oven, drying the corn straw to a constant weight state at 40 ℃, and then shearing the corn straw into 9 cm-11 cm; the straw is scattered on the soil, 0.25g of artificial humic acid solid powder is uniformly scattered, and then the soil is ploughed with the ploughing depth of 20cm, so that the straw, the artificial humic acid and the soil are fully mixed, and the straw, the artificial humic acid and the soil are cultivated for 0 to 180 days, thereby completing the method (marked as HA+SR) for promoting the decomposition of the straw returned to the field by the artificial humic acid.
Comparative example 1: the method for omitting straw decomposition by using artificial humic acid comprises the following steps:
weighing 100g of corn straw, placing the corn straw into an oven, drying the corn straw to a constant weight state at 40 ℃, and then shearing the corn straw into 9 cm-11 cm; and (3) scattering the straw on the soil, and ploughing the soil to a ploughing depth of 20cm, so that the straw and the soil are fully mixed, and culturing for 0-180 days to finish the straw decomposition method (recorded as SR).
Comparative example 2: a method for promoting straw decomposition by using artificial humic acid comprises the following steps:
weighing 100g of corn straw, placing the corn straw into an oven, drying the corn straw to a constant weight state at 40 ℃, and then shearing the corn straw into 9 cm-11 cm; the straw is scattered on the soil, 0.5g of solid artificial humic acid powder is uniformly scattered, and then the soil is ploughed with the ploughing depth of 20cm, so that the straw, the artificial humic acid and the soil are fully mixed, and the straw, the artificial humic acid and the soil are cultivated for 0 to 180 days, thereby completing the method (marked as 2HA+SR) for promoting the decomposition of the returning straw by using the artificial humic acid.
FIG. 1 shows the decomposition rate of straw after straw returning with artificial humic acid;
as can be seen from fig. 1: in the culture period of 10-120 days, the HA+SR is the highest in straw decomposition rate, and along with the increase of the culture time, the straw decomposition rate of 2HA+SR exceeds that of HA+SR in the culture period of 120-180 days, and the HA+SR is obviously different from that of SR, which shows that the addition of humic acid obviously improves the straw decomposition rate, the HA+SR is improved by 4%, and the 2HA+SR is improved by 13.3%.
FIG. 2 shows the decomposition rate of straw after straw returning with artificial humic acid;
as can be seen from fig. 2: the straw decomposition rate is in a descending trend in the culture period of 10-30 days, but the decomposition rate of the HA+SR group is the fastest, the comparison of the decomposition rates of HA+SR and 2HA+SR in the whole culture period is obviously accelerated with SR, which proves that the addition of artificial humic acid can promote the decomposition rate of returning straw, the HA+SR is improved by 9.4%, and the 2HA+SR is improved by 31.1%.
FIG. 3 shows the change of the carbon dioxide emission amount after straw returning by using artificial humic acid;
as can be seen from fig. 3: in the 180-day cultivation process, compared with the SR group, the carbon dioxide emission of HA+SR and 2HA+SR can be remarkably reduced, and the dosages of different artificial humic acids have different effects on reducing the carbon dioxide emission in the straw returning process, wherein the low-dosage HA+SR group HAs the best effect on reducing the carbon dioxide emission in the straw returning process, the HA+SR is reduced by 21.6%, and the 2HA+SR is reduced by 17.7%.
Claims (10)
1. The method for promoting the decomposition of the returning straw by using the artificial humic acid is characterized by comprising the following steps of:
the method is characterized in that the straw is crushed and then evenly scattered on the soil, the artificial humic acid is evenly sprayed and then ploughed on the soil, so that the straw, the artificial humic acid and the soil are fully mixed, ploughed and decomposed, and the method for promoting the straw decomposition by utilizing the artificial humic acid is completed.
2. The method for promoting decomposition of returning straw by using artificial humic acid according to claim 1, wherein the straw is corn straw, rice straw or wheat straw.
3. The method for promoting the decomposition of returning straw by using artificial humic acid according to claim 1, wherein the method is characterized in that the straw is crushed into 5 cm-15 cm.
4. The method for promoting straw decomposition by using artificial humic acid according to claim 1, wherein the throwing thickness of straw powder on soil is less than or equal to 8cm; the ploughing depth is 0 cm-40 cm.
5. The method for promoting straw decomposition by utilizing artificial humic acid according to claim 1, wherein the artificial humic acid is solid artificial humic acid or liquid artificial humic acid.
6. The method for promoting straw decomposition by using artificial humic acid according to claim 5, wherein the liquid artificial humic acid is obtained by dissolving solid artificial humic acid in a solvent of sodium hydroxide solution, potassium hydroxide solution or ammonia water solution; the concentration of the liquid artificial humic acid is 0.05 g/L-5 g/L.
7. The method for promoting straw decomposition by using artificial humic acid according to claim 6, wherein the concentration of the sodium hydroxide solution is 0.4 g/L-40 g/L.
8. The method for promoting straw decomposition by using artificial humic acid according to claim 6, wherein the concentration of the potassium hydroxide solution is 0.56-56 g/L.
9. The method for promoting straw decomposition by using artificial humic acid according to claim 6, wherein the mass fraction of the ammonia water solution is 0.05% -5%.
10. The method for promoting straw decomposition by using artificial humic acid according to claim 1, wherein the mass ratio of the artificial humic acid to the straw is (0.1-5 g): 1kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311472185.1A CN117501891A (en) | 2023-11-07 | 2023-11-07 | Method for promoting straw decomposition by using artificial humic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311472185.1A CN117501891A (en) | 2023-11-07 | 2023-11-07 | Method for promoting straw decomposition by using artificial humic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117501891A true CN117501891A (en) | 2024-02-06 |
Family
ID=89759933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311472185.1A Pending CN117501891A (en) | 2023-11-07 | 2023-11-07 | Method for promoting straw decomposition by using artificial humic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117501891A (en) |
-
2023
- 2023-11-07 CN CN202311472185.1A patent/CN117501891A/en active Pending
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