Silkworm excrement organic compound fertilizer as well as preparation method and application thereof

Abstract

The invention discloses a silkworm excrement organic compound fertilizer as well as a preparation method and application thereof, and the fertilizer is prepared from the following raw materials in parts by weight: 45-65 parts of modified silkworm excrement, 150-200 parts of decomposed organic fertilizer, 8-18 parts of humic acid, 15-35 parts of monoammonium phosphate and 20-40 parts of potassium sulfate, the modified silkworm excrement is obtained by carrying out oxygen-enriched microwave plasma treatment on silkworm excrement and then loading a traditional Chinese medicine extract; the traditional Chinese medicine extract is extracted from picris hieracioides and aspidopterys glauca according to the weight ratio of (17-29): (3-8). The silkworm excrement organic compound fertilizer provided by the invention not only can effectively prevent and treat the hemp mouth disease of the angelica sinensis, but also can remarkably improve the yield of the angelica sinensis and the content of symbolic components of the angelica sinensis such as ferulic acid, and can be used as a special fertilizer for planting the angelica sinensis; meanwhile, waste silkworm excrement is turned into wealth, a new means is provided for comprehensive utilization of the silkworm excrement, and remarkable environmental benefits and economic benefits are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of organic fertilizers, and in particular to a silkworm excrement organic composite fertilizer and a preparation method and application thereof. Background Art

[0002] Silkworm feces, also known as silkworm sand, silkworm feces, silkworm excrement, etc., is a black granular substance that is a by-product of silkworm production.

[0003] However, for a long time, the treatment of silkworm excrement has been relatively rough. A large amount of silkworm excrement is randomly piled up or discarded, which not only occupies land resources, but also may pollute the surrounding environment due to harmful gases and leachate produced during the fermentation process. At the same time, although silkworm excrement itself is rich in nutrients, its direct use as fertilizer has limitations such as slow nutrient release and unclear fertilizer effect, which greatly limits the widespread application of silkworm excrement in agriculture.

[0004] Faced with this situation, how to efficiently and environmentally friendly utilize silkworm feces, an agricultural waste, and transform it into organic fertilizer with specific functions has become an urgent problem to be solved in the field of organic fertilizer technology.

[0005] On the other hand, as a traditional Chinese medicine with a long history and extensive medicinal value, Angelica sinensis is often plagued by the disease of mouth during its cultivation. This disease not only seriously affects the yield of Angelica sinensis, but also reduces its quality, posing a threat to the stable supply of the traditional Chinese medicine market and the economic income of farmers. Although traditional chemical pesticide control methods can control the disease to a certain extent, long-term use can easily lead to drug resistance in pests and diseases, and the residues of chemical pesticides may also cause potential harm to the environment and human health.

[0006] Therefore, it is particularly urgent to develop an organic fertilizer that has both biological control function and can improve the yield and quality of angelica. Summary of the invention

[0007] Purpose of the invention: The first purpose of the present invention is to provide a silkworm excrement organic compound fertilizer that can prevent and treat Angelica sinensis numbness and increase Angelica sinensis yield and the content of ferulic acid in Angelica sinensis; the second purpose of the present invention is to provide a method for preparing the silkworm excrement organic compound fertilizer; the third purpose of the present invention is to provide an application of the silkworm excrement organic compound fertilizer.

[0008] Technical solution: The silkworm excrement organic compound fertilizer of the present invention comprises the following raw materials, measured by weight: 45-65 parts of modified silkworm excrement, 150-200 parts of decomposed organic fertilizer, 8-18 parts of humic acid, 15-35 parts of monoammonium phosphate and 20-40 parts of potassium sulfate; the modified silkworm excrement is obtained by loading a traditional Chinese medicine extract after the silkworm excrement is treated with oxygen-enriched microwave plasma; the traditional Chinese medicine extract is extracted from Croton tiglium and Scutellaria baicalensis in a weight ratio of (17-29):(3-8).

[0009] The fertilizer obtained by using the Chinese medicinal extracts of Croton tiglium and Scutellaria baicalensis in the above-mentioned proportion range has a better effect on the prevention and treatment of Angelica sinensis numbness.

[0010] The present invention discloses a plant of Picris hieracioides L., which belongs to the genus Picris of the Asteraceae family and is also called Picris hieracioides. The whole plant is used as medicine, and the Chinese medicine tastes bitter and pungent, and is cool in nature. It has the effects of purging fire and detoxifying, removing blood stasis and relieving pain, and promoting urination.

[0011] The shield-winged vine in the present invention is the vine stem of Aspidopterys obcordata Hemsl. of the Malpighiaceae family, which is distributed in Hainan, Yunnan and other places.

[0012] Silkworm excrement treated with oxygen-enriched microwave plasma is helpful for loading Chinese herbal medicine extracts.

[0013] Further preferably, the silkworm excrement organic compound fertilizer comprises the following raw materials in parts by weight: 50 parts of modified silkworm excrement, 180 parts of decomposed organic fertilizer, 13 parts of humic acid, 25 parts of monoammonium phosphate, and 30 parts of potassium sulfate.

[0014] Further preferably, the weight ratio of the herb to the scutellaria baicalensis is 25:6.

[0015] Preferably, the preparation method of the Chinese herbal medicine extract is: adding Croton tiglium and Glechoma longituba into water, performing reduced pressure reflux extraction, and then concentrating and drying the obtained water extract to obtain the Chinese herbal medicine extract.

[0016] Preferably, the conditions of the reduced pressure reflux extraction are: 28 kPa to 40 kPa, 70 to 80° C., and extraction for 1 to 2 hours.

[0017] Preferably, the added weight of the water is 8 to 10 times the total weight of the herb and the scutellaria baicalensis.

[0018] Preferably, the number of times of the reduced pressure reflux extraction is 1 to 3 times.

[0019] Further preferably, the pressure of the reduced pressure reflux extraction is 34 kPa, the temperature of the reduced pressure reflux extraction is 75°C, the number of reduced pressure reflux extractions is 1 to 3 times, and the weight of the added water accounts for 8 to 10 times the total weight of the hairy herb and the shield-winged vine.

[0020] Preferably, the decomposed organic fertilizer is composed of decomposed chicken manure and decomposed cow manure in a weight ratio of (1-3):(4-7).

[0021] The decomposed organic fertilizer in the present invention can be commercially available decomposed chicken manure, decomposed cow manure, etc., or directly prepared by oneself using the existing preparation process, such as uniformly mixing livestock and poultry manure (such as chicken manure, pig manure, cow manure, sheep manure, etc.) into compost fermented by composite microorganisms (such as lactic acid bacteria, bacillus, photosynthetic bacteria, yeast, actinomycetes, acetic acid bacteria, etc.), the livestock and poultry manure accounts for about 80% of the total weight of the compost and the composite microorganisms account for 0.1% to 0.2% of the total weight of the compost material, and then the compost is piled into a 2-meter-wide and 1-meter-high strip pile for composting and fermentation, so as to obtain the decomposed organic fertilizer.

[0022] The method for preparing the silkworm excrement organic composite fertilizer of the present invention comprises the following steps:

[0023] Step 1: Preparation of modified silkworm excrement

[0024] (1) crushing and sieving silkworm excrement and then adding it into a microwave plasma treatment instrument for treatment to obtain oxygen-enriched microwave plasma modified silkworm excrement;

[0025] (2) stirring and mixing the oxygen-enriched microwave plasma modified silkworm excrement with a traditional Chinese medicine extract, sodium carboxymethyl cellulose, and water for 1 to 2 hours, and then allowing to stand to obtain a semi-solid silkworm excrement / traditional Chinese medicine extract complex;

[0026] (3) Extruding the silkworm excrement / traditional Chinese medicine extract complex to obtain granules; and finally drying the obtained granules to obtain the modified silkworm excrement.

[0027] Step 2: Mix the modified silkworm excrement, decomposed organic fertilizer, humic acid, monoammonium phosphate and potassium sulfate to obtain the silkworm excrement organic compound fertilizer.

[0028] Preferably, in step (1), the specific conditions of the treatment in the microwave plasma treatment instrument are: introducing oxygen and argon with a volume ratio of 7:1 as the working medium, performing glow discharge treatment for 1 to 3 minutes under the conditions of a microwave power of 300 to 400 W and an air intake volume of 40 to 60 mL / min, and then continuing to introduce oxygen for 5 to 10 minutes.

[0029] Preferably, the mass ratio of the oxygen-enriched microwave plasma modified silkworm excrement, the traditional Chinese medicine extract, sodium carboxymethyl cellulose and water is 100:(13-19):(5-10):(80-110).

[0030] The function of the sodium carboxymethyl cellulose is bonding and molding.

[0031] The silkworm excrement organic compound fertilizer of the present invention is used in preventing and treating angelica sinensis numbness and in increasing the yield and improving the quality of angelica sinensis.

[0032] Invention mechanism:

[0033] (1) The present invention prepares a Chinese medicinal extract by using Herba Lysimachiae as the main raw material and supplemented with an appropriate amount of Herba Lysimachiae as the auxiliary raw material. The Chinese medicinal extract contains a variety of active ingredients with antibacterial and anti-inflammatory effects, which can inhibit the growth and reproduction of pathogenic bacteria in the soil, thereby effectively preventing and treating Angelica sinensis numbness.

[0034] (2) Silkworm excrement is a by-product of sericulture, containing rich organic matter and a variety of nutrients. The present invention, on the one hand, uses oxygen-rich microwave plasma treatment technology to modify silkworm excrement to improve its surface structure and physical and chemical properties, making it easier to adsorb and load the effective ingredients in Chinese herbal medicine extracts, forming a stable complex with multiple biological activities such as antibacterial and growth promotion, and also making it easier for Angelica sinensis to absorb and utilize, thereby further enhancing the efficacy of the fertilizer.

[0035] (3) The present invention uses modified silkworm excrement as the core functional component and is combined with decomposed organic fertilizer, humic acid, monoammonium phosphate and potassium sulfate and other raw materials. The decomposed organic fertilizer provides rich organic matter and microbial communities, providing a good ecological environment for the soil. Humic acid, as a soil conditioner, can improve the soil structure and increase the soil's ability to retain water and fertilizer. Monoammonium phosphate and potassium sulfate provide the phosphorus and potassium elements necessary for plants, promoting plant root development and nutrient absorption. These raw materials interact with modified silkworm excrement to form a silkworm excrement organic composite fertilizer with comprehensive nutrition and multiple functions, providing a new and efficient fertilizer option for the cultivation of Chinese medicinal materials such as angelica.

[0036] In summary, the present invention uses modified silkworm excrement as the core raw material, modifies the silkworm excrement through oxygen-enriched microwave plasma treatment technology, and loads the Chinese medicine extract prepared by hairy vegetables and shield-winged vines in a specific weight ratio, thereby giving the fertilizer unique biological activity. At the same time, raw materials such as decomposed organic fertilizer, humic acid, monoammonium phosphate and potassium sulfate are also added to the composite fertilizer to provide comprehensive nutritional support. The silkworm excrement organic composite fertilizer provided by the present invention can not only effectively prevent and treat Angelica sinensis numbness, but also significantly increase the yield of Angelica sinensis and the content of Angelica sinensis characteristic components such as ferulic acid, and can be used as a special fertilizer for Angelica sinensis planting. This innovative achievement not only realizes the transformation of silkworm excrement into treasure, provides a new means for the comprehensive utilization of silkworm excrement, but also has significant environmental and economic benefits, which is of great significance for promoting the sustainable development of agriculture.

[0037] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: (1) The fertilizer is obtained by combining silkworm feces with a Chinese medicinal extract mainly made from Croton tiglium and supplemented with an appropriate amount of Herba Glechomae, which can not only effectively prevent and treat Angelica sinensis numbness, but also significantly increase the yield of Angelica sinensis and the content of Angelica sinensis's characteristic components such as ferulic acid, and can be used as a special fertilizer for Angelica sinensis planting; (2) The preparation method is simple and easy to industrialize. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further described below in conjunction with embodiments.

[0039] Example 1

[0040] The Chinese medicinal extract of the present invention is prepared from Herba Lycopodii and Herba Lycopodii in a weight ratio of 25:6, and the specific preparation method comprises the following steps:

[0041] At 34 kPa and 75°C, add Herba Lycopodii and Herba Lycopodii to water for reduced pressure reflux extraction for 1.5 hours, twice. The weight of the added water accounts for 9 times the total weight of the Herba Lycopodii and Herba Lycopodii. The obtained water extracts are then combined and concentrated to a constant weight to obtain the Chinese medicine extract.

[0042] Example 2

[0043] The Chinese medicinal extract of the present invention is prepared from Herba Lycopodii and Herba Lycopodii in a weight ratio of 17:3, and the specific preparation method comprises the following steps:

[0044] At 28 kPa and 70°C, the herb and the scutellaria baicalensis are added to water for reduced pressure reflux extraction for 1.5 hours, twice, and the weight of the water added is 8 times the total weight of the herb and the scutellaria baicalensis. The obtained water extracts are then combined and concentrated and dried to constant weight to obtain the Chinese medicine extract.

[0045] Example 3

[0046] The Chinese medicinal extract of the present invention is prepared from Herba Lycopodii and Herba Lycopodii in a weight ratio of 29:8, and the specific preparation method comprises the following steps:

[0047] At 40 kPa and 80°C, the herb and the scutellaria baicalensis are added to water for reduced pressure reflux extraction for 1.5 hours, twice, and the weight of the water added is 10 times the total weight of the herb and the scutellaria baicalensis. The obtained water extracts are then combined and concentrated to a constant weight to obtain the Chinese medicine extract.

[0048] Example 4

[0049] The silkworm excrement organic compound fertilizer of the present invention comprises the following raw materials, measured by weight: 50 parts of modified silkworm excrement, 180 parts of decomposed organic fertilizer, 13 parts of humic acid, 25 parts of monoammonium phosphate and 30 parts of potassium sulfate.

[0050] The modified silkworm excrement is obtained by treating silkworm excrement with oxygen-enriched microwave plasma and then loading the traditional Chinese medicine extract provided in Example 1. The preparation process includes the following steps: the silkworm excrement is crushed and passed through a 100-mesh sieve, and then added into a microwave plasma treatment instrument, oxygen and argon with a volume ratio of 7:1 are introduced as working media, and glow discharge treatment is performed for 2 minutes under the conditions of a microwave power of 350 W and an air intake of 50 mL / min, and oxygen is continued to be introduced for 7 minutes to obtain oxygen-enriched microwave plasma modified silkworm excrement; the oxygen-enriched microwave plasma modified silkworm excrement, the traditional Chinese medicine extract, sodium carboxymethyl cellulose and water are stirred and mixed at a ratio of 100:15:7:100 for 2 hours, and then allowed to stand to obtain a semi-solid silkworm excrement / traditional Chinese medicine extract complex; the silkworm excrement / traditional Chinese medicine extract complex is extruded to obtain granules; and the obtained granules are then dried to obtain the modified silkworm excrement.

[0051] The decomposed organic fertilizer is composed of decomposed chicken manure and decomposed cow manure in a weight ratio of 2:5.

[0052] The preparation method of the silkworm excrement organic compound fertilizer comprises the following steps: stirring and mixing the prepared modified silkworm excrement and the remaining components in the silkworm excrement organic compound fertilizer to obtain the silkworm excrement organic compound fertilizer.

[0053] Example 5

[0054] The silkworm excrement organic compound fertilizer of the present invention comprises the following raw materials, measured by weight: 45 parts of modified silkworm excrement, 150 parts of decomposed organic fertilizer, 8 parts of humic acid, 15 parts of monoammonium phosphate and 20 parts of potassium sulfate.

[0055] The modified silkworm excrement is obtained by treating silkworm excrement with oxygen-enriched microwave plasma and then loading the Chinese medicine extract provided in Example 1. The preparation process includes the following steps: crushing the silkworm excrement and passing it through a 100-mesh sieve, adding it into a microwave plasma treatment instrument, introducing oxygen and argon with a volume ratio of 7:1 as working medium, performing glow discharge treatment for 3 minutes under the conditions of a microwave power of 300 W and an air intake of 60 mL / min, and then continuing to introduce oxygen for 10 minutes to obtain oxygen-enriched microwave plasma modified silkworm excrement; stirring and mixing the oxygen-enriched microwave plasma modified silkworm excrement, the Chinese medicine extract, sodium carboxymethyl cellulose and water at a ratio of 100:13:5:80 for 2 hours, and then standing to obtain a semi-solid silkworm excrement / Chinese medicine extract complex; extruding the silkworm excrement / Chinese medicine extract complex to obtain granules; and then drying the obtained granules to obtain the modified silkworm excrement;

[0056] The decomposed organic fertilizer is composed of decomposed chicken manure and decomposed cow manure in a weight ratio of 1:4.

[0057] The preparation method of the silkworm excrement organic compound fertilizer comprises the following steps: stirring and mixing the prepared modified silkworm excrement and the remaining components in the silkworm excrement organic compound fertilizer to obtain the silkworm excrement organic compound fertilizer.

[0058] Example 6

[0059] The silkworm excrement organic compound fertilizer of the present invention comprises the following raw materials in parts by weight: 65 parts of modified silkworm excrement, 200 parts of decomposed organic fertilizer, 18 parts of humic acid, 35 parts of monoammonium phosphate and 40 parts of potassium sulfate.

[0060] The modified silkworm excrement is obtained by treating silkworm excrement with oxygen-enriched microwave plasma and then loading the traditional Chinese medicine extract provided in Example 1. The preparation process includes the following steps: the silkworm excrement is crushed and passed through a 100-mesh sieve, and then added into a microwave plasma treatment instrument, oxygen and argon with a volume ratio of 7:1 are introduced as working media, and glow discharge treatment is performed for 1 minute under the conditions of a microwave power of 400 W and an air intake of 40 mL / min, and oxygen is continued to be introduced for 5 minutes to obtain oxygen-enriched microwave plasma modified silkworm excrement; the oxygen-enriched microwave plasma modified silkworm excrement, the traditional Chinese medicine extract, sodium carboxymethyl cellulose and water are stirred and mixed at a ratio of 100:19:10:110 for 2 hours, and then allowed to stand to obtain a semi-solid silkworm excrement / traditional Chinese medicine extract complex; the silkworm excrement / traditional Chinese medicine extract complex is extruded to obtain granules; and the obtained granules are then dried to obtain the modified silkworm excrement.

[0061] The decomposed organic fertilizer is composed of decomposed chicken manure and decomposed cow manure in a weight ratio of 3:7.

[0062] The preparation method of the silkworm excrement organic compound fertilizer comprises the following steps: stirring and mixing the prepared modified silkworm excrement and the remaining components in the silkworm excrement organic compound fertilizer to obtain the silkworm excrement organic compound fertilizer.

[0063] Comparative Example 1

[0064] This example provides a Chinese herbal medicine extract and a preparation method thereof, which is different from Example 1 only in that the raw material of the Chinese herbal medicine extract is only Polygonum multiflorum; the remaining steps and parameters are the same.

[0065] Comparative Example 2

[0066] This example provides a Chinese herbal medicine extract and a preparation method thereof, which is different from Example 1 only in that the raw material of the Chinese herbal medicine extract is only Glechoma longituba; the remaining steps and parameters are the same.

[0067] Comparative Example 3

[0068] This example provides a Chinese herbal medicine extract and a preparation method thereof, which is different from Example 1 only in that the Chinese herbal medicine extract is prepared from Polygonum multiflorum and Polygonum multiflorum in a weight ratio of 6:25; the remaining steps and parameters are the same.

[0069] Comparative Example 4

[0070] This example provides a silkworm excrement organic compound fertilizer and a preparation method thereof, which differs from Example 4 only in that: the modified silkworm excrement is obtained by loading the traditional Chinese medicine extract provided in Example 1 after the silkworm excrement is treated with microwaves, and the preparation comprises the following process: the silkworm excrement is crushed and passed through a 100-mesh sieve, and then added into a microwave device, and microwaved for 2 minutes at a microwave power of 350 W to obtain microwave-modified silkworm excrement; the microwave-modified silkworm excrement, the traditional Chinese medicine extract, sodium carboxymethyl cellulose and water are stirred and mixed at a ratio of 100:15:7:100 for 2 hours, and then allowed to stand to obtain a semi-solid silkworm excrement / traditional Chinese medicine extract complex; the silkworm excrement / traditional Chinese medicine extract complex is extruded to obtain granules; the obtained granules are then dried to obtain the modified silkworm excrement; the remaining steps and parameters are the same.

[0071] Performance Testing

[0072] 1. Test on the contact killing effect of Chinese herbal medicine extracts on nematodes

[0073] This example examines the contact killing effects of the Chinese herbal extracts obtained in Examples 1 to 3 and Comparative Examples 1 to 3 on the main pathogen causing Angelica sinensis paronychia - Ditylenchus destructor (referred to as nematodes).

[0074] Test method: Accurately weigh 10 mg of each of the Chinese herbal extracts obtained in Examples 1 to 3 and Comparative Examples 1 to 3, and dissolve them in 5 mL of DMSO to prepare sample mother solutions. During the test, the Chinese herbal extract test solution was diluted with DMSO to a final concentration of 500 μg / mL for contact activity determination. The nematode suspension was injected into the sample wells of a 96-well cell culture plate, each well containing 30 nematodes, and sterile water was added to a total volume of 300 μL. Three groups of replicates were set for each treatment, and 10 μL of 500 μg / mL Chinese herbal extract test solution and sterile water were added as controls. After culturing at 25°C for 3 days, the death and survival of nematodes were statistically analyzed, wherein the calculation formula is as follows: Nematode mortality (%) = (number of dead nematodes / number of nematodes tested) × 100%, nematode corrected mortality (%) = (nematode mortality in the treatment group - nematode mortality in the control group) / (1-control group mortality) × 100%.

[0075] The test results are shown in Table 1.

[0076] Table 1

[0077] Test samples Corrected mortality of nematodes (%) Example 1 98.9 Example 2 91.6 Example 3 93.5 Comparative Example 1 42.7 Comparative Example 2 30.8 Comparative Example 3 76.3

[0078] It can be seen from Table 1 that compared with comparative examples 1 to 3, the Chinese medicinal extract prepared by using appropriate proportions of Scutellaria baicalensis and Scutellaria peltatum as raw materials in the present invention has excellent contact killing effect on Ditylenchus destructor, and the two have synergistic effects, and the nematode corrected mortality rate (%) is ≥91.6%.

[0079] 2. Test on the effect of silkworm excrement organic fertilizer on the cultivation of angelica

[0080] The silkworm excrement organic compound fertilizer obtained in Examples 4 to 6 and Comparative Example 4 was used as a special basal fertilizer for angelica planting to investigate its promoting effect on angelica planting. The planting variety was Mingui No. 2. Except for the different fertilizer application, the growth management methods of each test group were the same, and each test group only applied basal fertilizer. 60 kg / mu was applied as basal fertilizer at one time during land preparation. No topdressing was performed. The mulch film was used for cultivation. The row spacing of angelica seedlings was 0.3 m × 0.4 m. Two groups of replicates were set for each test group. The yield of angelica was counted after the angelica was harvested, and the ferulic acid content of angelica was determined by high performance liquid chromatography. The average value of the determination results was taken. The test results are shown in Table 2.

[0081] Table 2

[0082] Test Group Angelica fresh root yield (kg / mu) Ferulic acid content (%) Example 4 group 839.4 0.144 Example 5 group 782.9 0.138 Example 6 group 801.3 0.140 Comparative Example 4 694.5 0.129

[0083] As shown in Table 2, the silkworm excrement organic compound fertilizer provided by the embodiment of the present invention can significantly increase the yield of Angelica sinensis and the content of Angelica sinensis characteristic components such as ferulic acid, and can be used as a special fertilizer for Angelica sinensis planting, and the promoting effect on Angelica sinensis planting is better than that of the silkworm excrement organic compound fertilizer provided by Comparative Example 4. In Comparative Example 4, the yield of Angelica sinensis fresh roots and the content of ferulic acid are both reduced, because the fertilizer efficiency of the silkworm excrement organic compound fertilizer obtained by conventional microwave treatment is poor.

[0084] In summary, the embodiments of the present invention provide a silkworm excrement organic compound fertilizer and a preparation method and application thereof. The present invention uses modified silkworm excrement as the core raw material, modifies the silkworm excrement by oxygen-enriched microwave plasma treatment technology, and loads a Chinese medicine extract prepared from tricholoma and pelargonium in a specific weight ratio, thereby giving the fertilizer a unique biological activity. At the same time, raw materials such as decomposed organic fertilizer, humic acid, monoammonium phosphate and potassium sulfate are also added to the compound fertilizer to provide comprehensive nutritional support. The silkworm excrement organic compound fertilizer provided by the present invention can not only effectively prevent and treat Angelica sinensis numbness, but also significantly increase the yield of Angelica sinensis and the content of Angelica sinensis characteristic components such as ferulic acid, and can be used as a special fertilizer for Angelica sinensis planting. This innovative achievement not only realizes the transformation of silkworm excrement into treasure, provides a new means for the comprehensive utilization of silkworm excrement, but also has significant environmental and economic benefits, which is of great significance for promoting the sustainable development of agriculture.

Claims

1. A silkworm excrement organic compound fertilizer, characterized in that: The invention comprises the following raw materials, in parts by weight: 45-65 parts of modified silkworm excrement, 150-200 parts of decomposed organic fertilizer, 8-18 parts of humic acid, 15-35 parts of monoammonium phosphate and 20-40 parts of potassium sulfate; the modified silkworm excrement is obtained by loading a traditional Chinese medicine extract after the silkworm excrement is treated with oxygen-enriched microwave plasma; the traditional Chinese medicine extract is obtained by extracting Croton tiglium and Scutellaria baicalensis in a weight ratio of (17-29):(3-8).

2. The silkworm excrement organic compound fertilizer according to claim 1, characterized in that: The preparation method of the traditional Chinese medicine extract comprises the following steps: adding scutellaria baicalensis and scutellaria baicalensis to water, performing reduced pressure reflux extraction, and then concentrating and drying the obtained water extract to obtain the traditional Chinese medicine extract.

3. The silkworm excrement organic compound fertilizer according to claim 2, characterized in that: The conditions of the reduced pressure reflux extraction are: 28 kPa to 40 kPa, 70 to 80° C., and extraction for 1 to 2 hours.

4. The silkworm excrement organic compound fertilizer according to claim 2, characterized in that: The added weight of the water is 8 to 10 times the total weight of the herb and the scutellaria baicalensis.

5. The silkworm excrement organic compound fertilizer according to claim 2, characterized in that: The number of times of the reduced pressure reflux extraction is 1 to 3 times.

6. The silkworm excrement organic compound fertilizer according to claim 1, characterized in that: The decomposed organic fertilizer is composed of decomposed chicken manure and decomposed cow manure in a weight ratio of (1-3):(4-7).

7. A method for preparing the silkworm excrement organic compound fertilizer according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Preparation of modified silkworm excrement (1) crushing and sieving silkworm excrement and then adding it into a microwave plasma treatment instrument for treatment to obtain oxygen-enriched microwave plasma modified silkworm excrement; (2) stirring and mixing the oxygen-enriched microwave plasma modified silkworm excrement with a traditional Chinese medicine extract, sodium carboxymethyl cellulose, and water for 1 to 2 hours, and then allowing to stand to obtain a semi-solid silkworm excrement / traditional Chinese medicine extract complex; (3) Extruding the silkworm excrement / traditional Chinese medicine extract complex to obtain granules; and finally drying the obtained granules to obtain the modified silkworm excrement. Step 2: Mix the modified silkworm excrement, decomposed organic fertilizer, humic acid, monoammonium phosphate and potassium sulfate to obtain the silkworm excrement organic compound fertilizer.

8. The method for preparing the silkworm excrement organic compound fertilizer according to claim 7, characterized in that: In step (1), the specific conditions of the treatment in the microwave plasma treatment instrument are: introducing oxygen and argon with a volume ratio of 7:1 as the working medium, performing glow discharge treatment for 1 to 3 minutes under the conditions of a microwave power of 300 to 400 W and an air intake of 40 to 60 mL / min, and then continuing to introduce oxygen for 5 to 10 minutes.

9. The method for preparing the silkworm excrement organic compound fertilizer according to claim 7, characterized in that: The mass ratio of the oxygen-enriched microwave plasma modified silkworm excrement, the traditional Chinese medicine extract, sodium carboxymethyl cellulose and water is 100:(13-19):(5-10):(80-110).

10. Use of the silkworm excrement organic compound fertilizer according to any one of claims 1 to 6 in preventing and treating Angelica sinensis numbness and increasing the yield and quality of Angelica sinensis.