Additive for preventing nitrogen loss in livestock and poultry manure composting process and composting method

Abstract

The invention provides an additive for preventing nitrogen loss in a livestock and poultry manure composting process and a composting method. The additive takes 1, 9-decanediol as an active component. During composting, livestock and poultry manure and dry auxiliary materials are mixed according to a certain proportion, a microbial decomposition inoculant, urea and 1, 9-decanediol are added into the mixed material before composting, and the adding proportion of the 1, 9-decanediol is 0.05%-0.1% of the mixed material. Experimental results show that the 1, 9-decanediol is added in the composting process of the livestock and poultry manure, so that the degradation of organic matters can be accelerated, the loss of nitrogen in the composting process is reduced to a certain extent, and the content of total nitrogen and total nutrients in a compost product is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of livestock and poultry manure composting, and specifically relates to an anti-nitrogen loss additive for the livestock and poultry manure composting process and a corresponding composting method. Background Art

[0002] During the aerobic composting process of livestock and poultry manure, ammonia is discharged, resulting in the loss of nitrogen in the compost product and affecting the fertilizer quality. In order to effectively inhibit the loss of nitrogen, synthetic nitrification inhibitors such as dicyandiamide (DCD) are often used as compost additives, but such substances are too expensive and cumbersome to use, making it difficult to apply on a large scale. 1,9-Decanediol is a fatty alcohol compound extracted from rice root exudates, which can inhibit the nitrification process of nitrogen at low concentrations and has the advantages of low cost and environmental friendliness. In Chinese invention patents with patent numbers CN114230416A, CN114230415A, and CN115299436A, it is applied alone or in combination with urea to the soil to delay the hydrolysis of urea in the soil and promote the growth of plant roots. However, there is no relevant report on its application to livestock and poultry manure composting in the prior art. Summary of the Invention

[0003] Based on the above problems, the present invention aims at the technical problem of nitrogen loss during the livestock and poultry manure composting process, and applies 1,9-decanediol to livestock and poultry manure composting, aiming to reduce the nitrogen loss during the composting process and improve the quality of the compost product.

[0004] The research process of the present invention is as follows: Adding different concentrations of 1,9-decanediol to chicken manure composting can accelerate the degradation of organic matter, reduce the nitrogen loss during the composting process to a certain extent, increase the total nitrogen and total nutrient content in the compost product, and the effect on the composting effect is similar to that of the synthetic nitrification inhibitor dicyandiamide.

[0005] Based on the above research, the technical solutions to be protected by the present invention are as follows:

[0006] In the first aspect of the present invention, the use of 1,9-decanediol as an anti-nitrogen loss additive during the livestock and poultry manure composting process is provided.

[0007] In the second aspect of the present invention, an anti-nitrogen loss additive for the livestock and poultry manure composting process is provided, which uses 1,9-decanediol as the active component.

[0008] Preferably, the livestock and poultry manure composting is aerobic composting of livestock and poultry manure;

[0009] Preferably, the livestock and poultry manure is selected from chicken manure, duck manure, pig manure, etc.

[0010] Furthermore, through experiments, it was found that when the dosing ratio of 1,9-decanediol exceeded 0.1%, the improvement of the composting effect was not significant. Therefore, the suitable dosing ratio of 1,9-decanediol was 0.05%-0.1%.

[0011] In the third aspect of the present invention, a method for aerobic composting of livestock and poultry manure is provided, in which livestock and poultry manure and dry auxiliary materials are mixed in a certain ratio, and a microbial composting agent, urea and 1,9-decanediol are added to the mixed materials.

[0012] Preferably, the dry auxiliary materials are selected from corn straw, wheat straw, soybean straw, rice straw, cotton straw, sorghum straw, oat straw, pea straw, peanut shell, rice husk powder, rice bran, flax stem and leaf, sunflower stem and leaf, tomato stem and leaf, pepper stem and leaf, sugarcane stem and leaf, beet stem and leaf, cassava stem and leaf, banana stem and leaf, peanut vine, sweet potato vine, mulberry leaf, moringa liquid, broussonetia papyrifera branch and leaf, caragana korshinskii, dry tomato residue, dry sugarcane residue, dry cassava residue, dry apple residue, dry soybean residue, dry brewer's grains, cottonseed meal, linseed meal, peanut meal, sesame meal, rapeseed meal, sunflower seed meal, etc.

[0013] Preferably, the moisture content of the mixed materials is 55%-65%, and the carbon-nitrogen ratio is 20-30:1.

[0014] Preferably, 1,9-decanediol is added before composting of the mixed materials, and the dosing ratio is 0.05%-0.1% of the mixed materials.

[0015] Preferably, the addition ratio of the microbial composting agent is 0.1% of the mixed materials, and the addition ratio of urea is 0.05% of the mixed materials.

[0016] Beneficial guarantees and effects of the present invention:

[0017] The present invention explores the expanded application fields of 1,9-decanediol. The experimental results show that adding 1,9-decanediol to chicken manure compost can accelerate the degradation of organic matter, reduce the loss of nitrogen to a certain extent during the composting process, increase the total nitrogen and total nutrient contents in the compost product, and the influence on the composting effect is similar to that of the synthetic nitrification inhibitor dicyandiamide. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further illustrates the present disclosure with reference to the drawings, where these illustrations are only for illustrating the embodiments of the present disclosure and not for limiting the scope of the present disclosure.

[0019] Figure 1 Shows the influence of 1,9-decanediol on the organic matter content during the composting process of livestock and poultry manure;

[0020] Figure 2 Shows the influence of 1,9-decanediol on the total nitrogen content during the composting process of livestock and poultry manure;

[0021] Figure 3 It shows the effect of 1,9-decanediol on the total nutrient content during the composting process of livestock and poultry manure. Specific implementation manners

[0022] The following examples and experimental examples further illustrate the present invention and should not be construed as limiting the present invention. The examples do not include a detailed description of traditional methods, such methods being well known to those of ordinary skill in the art and being described in many publications.

[0023] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to the described content can be applied to the present invention, and the preferred implementation methods and materials described in the specific implementation manners are only for demonstration purposes.

[0024] Example 1

[0025] Mix 20 tons of chicken manure and 6 tons of straw, and add 0.1% microbial composting bacteria and 0.05% urea.

[0026] Example 2

[0027] Mix 20 tons of chicken manure and 6 tons of straw, and add 0.1% microbial composting bacteria, 0.05% urea and 0.05% 1,9-decanediol.

[0028] Example 3

[0029] Mix 20 tons of chicken manure and 6 tons of straw, and add 0.1% microbial composting bacteria, 0.05% urea and 0.1% 1,9-decanediol.

[0030] Example 4

[0031] Mix 20 tons of chicken manure and 6 tons of straw, and add 0.1% microbial composting bacteria, 0.05% urea and 0.2% 1,9-decanediol.

[0032] Build the above 4 piles of mixed materials into windrows for aerobic composting. Take test samples once every 7 days, randomly sample 100 g each time, and the detection indexes are organic matter, total nitrogen, and total phosphorus. The detection method is carried out according to NY / T 525-2021 "Organic Fertilizer".

[0033] The results are as Figures 1 to 3 shown. The contents of organic matter, total nitrogen and total nutrients before and after chicken manure composting have all changed significantly. Specifically:

[0034] As Figure 1As shown, compared with before composting, the content of organic matter after composting decreased significantly. The content of organic matter in Example 1 decreased by 36% compared with before composting, and the change in the test group added with 1,9-decanediol was more significant; the content of organic matter in Examples 2-4 decreased by 40%, 39% and 41% respectively compared with before composting. The results showed that the proportion of the decrease in the content of organic matter in the test group added with 1,9-decanediol was 3%-5% more than that in the control group, which was similar to the proportion of the decrease in the content of organic matter after adding dicyandiamide being 4% more than that without adding additives (Patent No. 202011090744.9).

[0035] As Figure 2 shown, compared with before composting, the content of total nitrogen after composting showed a trend of first decreasing and then remaining unchanged. The content of total nitrogen in Examples 1-4 decreased by 41%, 31%, 30% and 28% respectively compared with before composting.

[0036] As Figure 3 shown, compared with before composting, the content of total nutrients after composting increased significantly. The content of total nutrients in Example 1 increased by 17% compared with before composting, and the change in the test group added with 1,9-decanediol was more significant than that in the control group. The content of total nutrients in Examples 2-4 increased by 31%, 24% and 24% respectively compared with before composting.

[0037] From the above results, it can be concluded that adding 1,9-decanediol to chicken manure composting can accelerate the degradation of organic matter, reduce the loss of nitrogen during composting to a certain extent, increase the content of total nitrogen and total nutrients in the compost product, and the effect on composting is similar to that of the synthetic nitrification inhibitor dicyandiamide. When the dosing ratio of 1,9-decanediol exceeds 0.1%, the improvement of the composting effect is not significant. Therefore, the suitable dosing ratio is 0.05%-0.1%.

[0038] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. Use of 1,9-decanediol as an additive to prevent nitrogen loss in the process of livestock and poultry manure composting.

2. An additive for preventing nitrogen loss during the composting process of livestock and poultry manure, characterized in that, It uses 1,9-decanediol as the active ingredient.

3. The anti-nitrogen loss additive in the livestock and poultry manure composting process according to claim 2, characterized in that, Livestock and poultry manure composting is aerobic composting of livestock and poultry manure.

4. The anti-nitrogen loss additive in the livestock and poultry manure composting process according to claim 2, characterized in that, The livestock and poultry manure is selected from chicken manure, duck manure or pig manure.

5. The anti-nitrogen loss additive in the livestock and poultry manure composting process according to claim 2, characterized in that, The suitable addition ratio of 1,9-decanediol is 0.05%-0.1%.

6. A method for aerobic composting of livestock and poultry manure, characterized in that, The livestock and poultry manure and dry auxiliary materials are mixed in a certain proportion, and microbial composting agents, urea and 1,9-decanediol are added to the mixture.

7. The method for aerobic composting of livestock and poultry manure according to claim 6, characterized in that, The mass ratio between livestock and poultry manure and dry auxiliary materials is 10:

3. The dry auxiliary material is selected from any one or more of corn straw, wheat straw, bean straw, rice straw, cotton straw, sorghum straw, oat straw, pea straw, peanut shells, rice husk powder, rice bran, flax stems and leaves, sunflower stems and leaves, tomato stems and leaves, pepper stems and leaves, sugarcane stems and leaves, beet stems and leaves, cassava stems and leaves, banana stems and leaves, peanut vines, sweet potato vines, mulberry leaves, moringa liquid, paper mulberry branches and leaves, caragana, dry tomato residue, dry sugarcane residue, dry cassava residue, dry apple residue, dry bean residue, dry brewer's grains, cottonseed meal, flaxseed meal, peanut meal, sesame meal, rapeseed meal, and sunflower kernel meal.

8. The method for aerobic composting of livestock and poultry manure according to claim 6, characterized in that, The water content of the mixed material is 55%-65%, and the carbon-nitrogen ratio is 20-30:

1.

9. The method for aerobic composting of livestock and poultry manure according to claim 6, characterized in that 1,9-Decanediol is added to the mixed materials before composting, and the addition ratio is 0.05%-0.1% of the mixed materials.

10. The method for aerobic composting of livestock and poultry manure according to claim 6, characterized in that, The addition ratio of microbial composting agent is 0.1% of the mixed material, and the addition ratio of urea is 0.05% of the mixed material.

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