A kind of organic fertilizer made from black soldier fly manure

Abstract

The present invention belongs to the technical field of organic fertilizers, and particularly relates to a black soldier fly manure organic fertilizer. A black soldier fly manure organic fertilizer is composed of the following components in percentage by mass: 35-50% of black soldier fly manure fermentate, 2-10% of insecticidal component, 8-10% of potassium dihydrogen phosphate, 4-6% of magnesium sulfate, 1-7% of sodium lignosulfonate, and bentonite is supplemented to 100%; wherein, the insecticidal component is composed of fluxapyroxad and cyflumetofen or flubendiamide. In the present invention, the black soldier fly manure is mixed with an insecticidal component having a synergistic effect to form a medicament fertilizer, which can not only provide nutrients for plant growth, but also control pests (especially root-knot nematodes) that affect plant growth. Thus, a single fertilization can achieve the dual effects of promoting growth and killing insects, and can further improve the utilization value of black soldier fly manure. In addition, the insecticidal component of the present invention is composed of two components, which can improve the control effect on pests and reduce the risk of drug resistance at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of pesticides, and particularly relates to black soldier fly feces organic fertilizer. Background Art

[0002] Black soldier flies, saprophytic insects of the family Schizophora, feed on livestock and poultry manure and household garbage to produce high-value animal protein feed. Their rapid reproduction, large biomass, wide-ranging diet, high absorption and conversion rate, ease of management, and low breeding costs make them a valuable resource for resource utilization. Their larvae, known as "phoenix insects," have become a resource insect on par with maggots, mealworms, and barley worms, and are being promoted worldwide. The resulting product of black soldier flies, the black soldier fly feces, can be used to prepare organic fertilizers, providing nutrients for plant growth.

[0003] Prior art reports disclose the preparation of fertilizers from black soldier fly feces. For example, patent CN108976030A discloses a strawberry-specific fertilizer using insect feces as a matrix, as well as a preparation method and application thereof. The strawberry-specific fertilizer comprises black soldier fly feces, yellow mealworm feces, urea, ammonium dihydrogen phosphate, potassium sulfate, and vermiculite. The fertilizer can be used as a base fertilizer for strawberry production, effectively improving the soil, increasing the survival rate of strawberries, preventing salt damage from excessive fertilization, reducing the number and amount of topdressing in the later stages, and improving the yield and quality of strawberries.

[0004] For example, patent CN113105283A discloses a composting method for combining anaerobic digestion residue of food waste with black soldier fly feces. The method mixes the anaerobic digestion residue of food waste with black soldier fly feces in a certain proportion, selects a suitable bulking agent to adjust the carbon-nitrogen ratio and moisture content of the compost raw materials, achieves rapid heating and maturation, and improves the humification degree of the compost product. This provides a new treatment method for anaerobic digestion residue of food waste and black soldier fly feces. The resulting compost product is rich in humus and high in nutrients, and can be easily made into organic fertilizer.

[0005] Of course, there are reports in the prior art of using black soldier fly excrement as fertilizer. However, in many of these reports, this black soldier fly excrement fertilizer is used to provide nutrients for plant growth. Plant growth requires not only nutrients but also pest control, and existing black soldier fly excrement is not effective in controlling pests and diseases. Combining black soldier fly excrement organic fertilizer with an insecticide to create a medicinal fertilizer would undoubtedly further enhance the utility of black soldier fly excrement.

[0006] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0007] The object of the present invention is to provide a black soldier fly manure organic fertilizer.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A black soldier fly manure organic fertilizer is composed of the following components mixed by mass percentage: 35-50% of black soldier fly manure fermented product, 2-10% of insecticidal component, 8-10% of potassium dihydrogen phosphate, 4-6% of magnesium sulfate, 1-7% of sodium lignosulfonate, and bentonite is supplemented to 100%; wherein, the insecticidal component consists of fluxapyroxad and cyflumetofen or flupyradifurone.

[0010] Preferably, the preparation method of the black soldier fly manure fermented product is as follows: Take black soldier fly manure and add it to water, adjust the water content to 50-60%, stack it in a sealed manner and ferment for 10-15 days, then collect the fermented product and dry it under natural conditions until the water content is 15-20%; wherein, during the sealed stacking fermentation process, turn the pile every 3 days.

[0011] Preferably, the mass ratio of fluxapyroxad to cyflumetofen is 1-10:10-1.

[0012] Preferably, the mass ratio of fluxapyroxad to flupyradifurone is 1-4:15-1.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention mixes black soldier fly manure with an insecticidal component having a synergistic effect to form a medicament fertilizer, which can not only provide nutrients for plant growth but also control pests (especially root-knot nematodes) that affect plant growth. In this way, one fertilization can achieve the dual effects of promoting growth and killing insects, further improving the utilization value of black soldier fly manure. In addition, the insecticidal component of the present invention consists of two components, which can improve the control effect on pests and reduce the risk of drug resistance at the same time. Specific Embodiments

[0015] The technical solutions of the present invention are described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present invention.

[0016] In the following embodiments, the black soldier fly manure comes from the black soldier fly farm of Tian'e Pingchang Ecological Agriculture Co., Ltd. in Guangxi Zhuang Autonomous Region.

[0017] Example 1

[0018] A kind of black soldier fly larvae manure organic fertilizer is mixed by the following components in mass percentage: 50% of black soldier fly larvae manure fermented product, 3% of insecticidal component, 10% of potassium dihydrogen phosphate, 6% of magnesium sulfate, 4% of sodium lignosulfonate, and supplemented with bentonite to 100%; among which, the preparation method of the black soldier fly larvae manure fermented product is: take black soldier fly larvae manure, add it to water, adjust the water content to 55%, stack it sealed and ferment for 15 days, collect the fermented product and air it to a water content of 20% under natural conditions, and during the sealed stacking fermentation process, turn the pile once every 3 days;

[0019] In addition, the insecticidal component is composed of fluopyram and cyflumetofen in a mass ratio of 1:2.

[0020] Example 2

[0021] A kind of black soldier fly larvae manure organic fertilizer is mixed by the following components in mass percentage: 46% of black soldier fly larvae manure fermented product, 6% of insecticidal component, 8% of potassium dihydrogen phosphate, 5% of magnesium sulfate, 6% of sodium lignosulfonate, and supplemented with bentonite to 100%; among which, the preparation method of the black soldier fly larvae manure fermented product is: take black soldier fly larvae manure, add it to water, adjust the water content to 55%, stack it sealed and ferment for 15 days, collect the fermented product and air it to a water content of 20% under natural conditions, and during the sealed stacking fermentation process, turn the pile once every 3 days;

[0022] In addition, the insecticidal component is composed of fluopyram and flubendiamide in a mass ratio of 4:1.

[0023] Example 3

[0024] 1. Test object

[0025] Meloidogyne incognita

[0026] 2. Test agents

[0027] 98% fluopyram technical (commercially available), 97% cyflumetofen technical (commercially available), 95% flubendiamide technical (commercially available).

[0028] First, dissolve the technical in dimethyl sulfoxide to prepare a single-agent mother liquor, and then dilute it with an aqueous solution of 0.1% Tween-80. Set multiple groups of ratios, and set 5 mass concentration gradients for each single agent and each mixture ratio of the mixture according to the equal ratio method for standby.

[0029] 3. Test method: (Refer to "NT / Y 1833.1-2009 Pesticide Bioassay Guidelines for Indoor Tests - Nematicides - Part 1: Tests for Inhibiting Phytopathogenic Nematodes - Insect Immersion Method")

[0030] The eggs of root-knot nematodes were picked from the roots of pepper plants in the pepper planting area of Tian'e County, Guangxi, incubated and cultured, and the second-stage larvae were used as the experimental objects. The cultured root-knot nematodes were eluted with water, filtered, centrifuged at 1000 r / min for 2 min, the supernatant was discarded, water was added, and then centrifuged again. The root-knot nematodes were resuspended with water to 200 heads / mL. 3 mL of the medicament solution and 3 mL of the root-knot nematode suspension were pipetted into a test tube and mixed evenly. A certain volume of the above-mentioned mixture was pipetted into the wells of a 24-well biochemical test plate, covered, and incubated at a constant temperature of 25 °C; the treatment with 0.1% Tween-80 aqueous solution was set as the control, and 3 replicates were set for each mass concentration. After culturing for 24 h, 1 mL of the mixture was taken to observe the death of nematodes under a dissecting microscope. The number of nematodes observed in each replicate was not less than 100 heads, and the total number of nematodes investigated and the number of dead nematodes were recorded. The judgment criterion for nematode death was: the nematodes were stiff and could not bend and move when touched with a hairpin or bamboo needle; according to the investigation data, the mortality rate and corrected mortality rate of each treatment were calculated.

[0031]

[0032] In the above formula: P—the mortality rate, unit: %; K—the number of dead insects; N—the total number of insects in the treatment.

[0033]

[0034] In the above formula: P1—the corrected mortality rate, unit: %; P t —the treatment mortality rate, unit: %; P0—the mortality rate of the blank control, unit: %.

[0035] 4. Data analysis

[0036] Regression analysis was performed on the logarithm of the medicament concentration of each treatment and the probit value of the corrected mortality rate of each treatment using DPS software, and the LC 50 of each treatment medicament was calculated. According to the Sun Yunpei method, the co-toxicity coefficient (CTC value) of the mixture was calculated, and the synergistic effect of the medicament was evaluated based on the calculated co-toxicity coefficient (CTC). CTC ≤ 80 was antagonistic effect, 80 < CTC < 120 was additive effect, and CTC ≥ 120 was synergistic effect. The results are shown in Table 1-2.

[0037] Table 1 Indoor bioactivity determination of fluopyram and cyflumetofen mixtures against Meloidogyne incognita on peppers

[0038] Name and ratio of medicaments LC50 (mg / L) ATI TTI CTC Tetraconazole 20.465 100.000 -- -- Butylpyridaben 11.724 174.556 -- -- Tetraconazole 1: Butylpyridaben 10 10.108 202.463 167.779 120.673 Tetraconazole 1: Butylpyridaben 5 8.503 240.680 162.130 148.448 Tetraconazole 1: Butylpyridaben 2 2.061 992.965 149.704 663.284 Tetraconazole 1: Butylpyridaben 1 4.865 420.658 137.278 306.427 Tetraconazole 2: Butylpyridaben 1 9.005 227.263 124.852 182.025 Tetraconazole 5: Butylpyridaben 1 12.574 162.756 112.426 144.768 Tetraconazole 10: Butylpyridaben 1 15.269 134.030 106.778 125.522

[0039] As can be seen from Table 1, fluopyram and cyflumetofen showed a synergistic effect in the mass ratio range of 1-10:10-1 against the control of Meloidogyne incognita, and could improve the control effect against Meloidogyne incognita.

[0040] Table 2 Indoor Bioactivity Determination of Fluopyram and Flupyradifurone in Combination against Meloidogyne incognita on Chili

[0041] Name and ratio of medicaments LC50 (mg / L) ATI TTI CTC Tetraconazole 20.465 100.000 -- -- Flufensulfone 2.637 776.071 -- -- Tetraconazole 1: Flufensulfone 15 1.332 1536.411 733.817 209.373 Tetraconazole 1: Flufensulfone 10 2.279 897.982 714.610 125.660 Tetraconazole 1: Flufensulfone 5 1.910 1071.466 663.393 161.513 Tetraconazole 1: Flufensulfone 2 0.944 2167.903 550.714 393.653 Tetraconazole 1: Flufensulfone 1 2.755 742.831 438.036 169.582 Tetraconazole 2: Flufensulfone 1 5.125 399.317 325.357 122.732 Tetraconazole 4: Flufensulfone 1 1.829 1118.917 235.214 475.701

[0042] As can be seen from Table 2, fluopyram and flupyradifurone showed synergistic effects against Meloidogyne incognita within the mass ratio range of 1-4:15-1, which could improve the control efficacy against Meloidogyne incognita.

[0043] In summary, when fluopyram is used in combination with cyflumetofen or flupyradifurone, it shows synergistic effects against Meloidogyne incognita, which can improve the control efficacy against Meloidogyne incognita; meanwhile, it can also reduce the risk of drug resistance.

[0044] The foregoing description of the specific exemplary embodiments of the present invention is for purposes of illustration and exemplification. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations are possible in light of the above teaching. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the invention and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the invention, as well as various different selections and changes. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A black soldier fly excrement organic fertilizer, characterized in that: The invention is composed of the following components, calculated by mass percentage: 35-50% fermented black soldier fly feces, 2-10% insecticide, 8-10% potassium dihydrogen phosphate, 4-6% magnesium sulfate, 1-7% sodium lignin sulfonate, and bentonite supplemented to 100%; wherein the insecticide is composed of fluopicolide and fluazifop-butyl or flufenoxane; wherein, The mass ratio of fluopicolide to cyflumetofen is 1-10:10-1; The mass ratio of fluopicolide to fluenesulfone is 1-4:15-1.

2. The black soldier fly excrement organic fertilizer according to claim 1, characterized in that: The preparation method of the fermented black soldier fly excrement comprises the following steps: adding the black soldier fly excrement to water, adjusting the water content to 50-60%, sealing and stacking the excrement for fermentation for 10-15 days, collecting the fermented product, and air-drying it under natural conditions until the water content reaches 15-20%. During the sealed and stacked fermentation process, the compost is turned over every 3 days.

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