CN112592230A - Preparation method of biogas slurry foliar fertilizer - Google Patents
Preparation method of biogas slurry foliar fertilizer Download PDFInfo
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- CN112592230A CN112592230A CN202011561008.7A CN202011561008A CN112592230A CN 112592230 A CN112592230 A CN 112592230A CN 202011561008 A CN202011561008 A CN 202011561008A CN 112592230 A CN112592230 A CN 112592230A
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- biogas slurry
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C11/00—Other nitrogenous fertilisers
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- 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
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- 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
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- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a preparation method of a biogas slurry foliar fertilizer, which mainly comprises the steps of filtering and membrane concentrating raw biogas slurry obtained after anaerobic fermentation of poultry manure to obtain nanofiltration concentrated solution, adding amino acid powder and various chelated microelements, and uniformly mixing. The invention solves the problems of low effective components and low economic utilization value of the biogas slurry, intercepts most of organic matters and effective nutrients in the biogas slurry, adjusts the proportion of each substance component in the biogas slurry, makes up the deficiency of natural organic foliar fertilizer in the market, reduces the environmental protection pressure and provides a new way for the biogas slurry treatment of large and medium-sized biogas projects.
Description
Technical Field
The invention relates to the field of agricultural high-tech technology, and particularly relates to a preparation method of a biogas slurry foliar fertilizer.
Background
The foliar fertilizer has a plurality of advantages, and has important functions in the aspects of adjusting crop physiology, crop nutrition and fertilization, improving comprehensive fertilizer efficiency, improving the quality of agricultural products and the like. The foliar fertilizer has strong pertinence, and the nutrient types and formulas can be determined according to nutrient elements which are lacked by crops, so that the nutrient which is lacked by the crops can be supplemented in time, and the nutrient deficiency symptoms of the crops can be alleviated or eliminated. The leaves are the most important nutrient organs outside the roots for plant growth, and are particularly important for plants with difficult root fertilization. The nutrients are sprayed on the leaves of the crops, and the plants can rapidly absorb and utilize various nutrients through pores on the surfaces of the leaves, so that the nutrients are directly utilized without long-distance transportation. Compared with root nutrition, the foliar fertilizer has the advantages of rapid, direct and efficient foliar nutrition, good fertilizer efficiency, simple operation, rapid nutrient absorption, strong pertinence and the like.
At present, five leaf fertilizers in the market are summarized: macroelements, trace elements, humic acids, amino acids, and hormones. The biogas slurry is a natural foliar fertilizer, which contains abundant elements and medium trace elements, and also contains a large amount of plant hormones (gibberellin, auxin and the like), a plurality of micromolecular amino acids and substances with the effect of inhibiting plant diseases and insect pests, and the natural foliar fertilizer has the advantages that other foliar fertilizers cannot have. In addition, the source of biogas slurry is wide. Aiming at the problems that the large-scale livestock and poultry farms in China are rapidly developed in recent years and the annual production of livestock and poultry manure in China exceeds 25 hundred million tons, 200 large biogas projects are newly built nationwide in 2014. According to the general statistics, 1 ton biogas slurry can be generated when 1 ton of livestock manure is processed.
However, the biogas slurry used as a commodity foliar fertilizer has some technical problems. The biogas slurry has low content of available nutrients, short economic transportation distance, small market scattering range and small economic return; the biogas slurry has complex material components, the proportion is not matched with the nutritional requirements of crops, the efficacy cannot be maximized, and even the effect is not obvious; the adhesiveness is not strong, especially the most air holes are distributed on the back of the blade, the biogas slurry is seriously lost; the biogas slurry contains more solid insoluble substances, so that the application equipment is easy to block, and the requirement on the application equipment is high.
The invention utilizes the chicken manure concentrated biogas slurry and the auxiliary materials to produce the biogas slurry foliar fertilizer in a combined manner, realizes the possibility of selling the biogas slurry as a commodity fertilizer in the market, improves the yield and the quality of field crops of rice and wheat, and provides an economic and effective way for the consumption of the biogas slurry in large-scale biogas engineering.
Disclosure of Invention
In order to solve the problems in the prior art, the technical scheme of the invention provides a preparation method of a biogas slurry foliar fertilizer. The technical scheme is as follows:
the preparation method is characterized in that the raw biogas slurry after anaerobic fermentation of poultry manure is filtered and concentrated by a membrane to obtain nanofiltration concentrated solution, amino acid powder and various chelated trace elements are added into the nanofiltration concentrated solution, and the nanofiltration concentrated solution and the amino acid powder are mixed uniformly.
Further, the nanofiltration concentrated solution is prepared by the following steps:
(1) continuously passing the original biogas slurry through two sedimentation tanks to remove large granular solid insoluble matters which are easy to settle in the biogas slurry;
(2) the obtained biogas slurry passes through a microfiltration machine to remove small solid insoluble matters which are not easy to settle in the biogas slurry;
(3) concentrating the obtained filtrate by a two-section tubular membrane device to obtain ultrafiltration clear liquid under the condition of 10 times;
(4) and (3) concentrating the obtained ultrafiltration clear liquid by a two-section disc type membrane device to obtain nanofiltration concentrated liquid under the condition of 5.8 times.
Further, the total nutrient of the original biogas slurry is 0.8-1.0 percent, the solid content is less than 3 percent, and the COD is 7500-8000mg/L in terms of mass fraction.
Further, the nanofiltration concentrated solution comprises, by mass, less than 1% of solid content, 1.5% -1.8% of total nutrients, 2.3% -2.5% of humic acid, 1.8% of COD, 25000-33000mg/L of COD, 2.2-2.5mg/ml of amino acids, 1.0-1.2mg/ml of gibberellin and 1.5-2.0mg/ml of indoleacetic acid. Further, the amount of the amino acid powder added is 3% by mass.
Further, the added chelated trace elements comprise, by mass, boron, iron and magnesium, and the addition amounts thereof are 0.5%, 0.3% and 0.5%, respectively.
Further, the poultry manure is chicken manure.
Compared with the prior art, the technical scheme of the invention at least has the following beneficial effects: can utilize the biogas slurry as resources, realize the possibility that the biogas slurry is used as a commercial fertilizer, and solve the blank of biogas slurry fertilizers in the market. The technology has the advantages of wide raw material source, low production cost, excellent economic effect, ecological environment protection and the like, and has important significance for the development of biogas engineering.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Obtaining of the starting Material
The chicken manure biogas slurry to be tested is obtained from Jiangsu Suhong and Shu biological science and technology limited company, and EDTA-Zn, EDTA-B, amino acid, EDTA-Mg and the like come from the market.
EXAMPLE one (preparation of biogas slurry foliar fertilizer of the invention)
Firstly, continuously passing the original biogas slurry through two sedimentation tanks to remove large granular solid insoluble matters which are easy to settle in the biogas slurry; secondly, the obtained biogas slurry passes through a microfiltration machine to remove small-particle solid insoluble matters which are difficult to settle in the biogas slurry; then concentrating by a two-section tubular membrane by 10 times to obtain an ultrafiltration clear liquid; then, the obtained ultrafiltration clear liquid passes through a two-section disc type membrane, and is concentrated by 5.8 times to obtain nanofiltration concentrated solution; and finally, adding 2.5% of amino acid, 0.2% of chelated zinc, 0.2% of chelated boron and 0.5% of chelated magnesium in parts by mass to prepare the biogas slurry foliar fertilizer.
Example two
The biogas slurry foliar fertilizer used in the patent is formed by adding auxiliary materials such as amino acid, medium trace elements and the like after secondary concentration of biogas slurry, and is used in 2018 and 6 months11 months, starting a comparative test with different varieties of foliar fertilizers applied on rice, 2 control groups (CK1 and CK2) and 1 treatment group (S3) were set, each treatment area 667m2。
CK 1: spraying clean water once in 3 periods of tillering period, booting period and grouting period of the rice respectively, wherein the amount of the clean water is 30kg each time;
CK 1: respectively spraying monopotassium phosphate once in 3 periods of a tillering period, a booting period and a filling period of rice, wherein the dosage of the monopotassium phosphate is 100g each time, and diluting the monopotassium phosphate to 30kg by using clear water;
s3: the biogas slurry foliar fertilizer is sprayed once in 3 periods of a tillering period, a booting period and a grouting period of rice respectively, the dosage of the biogas slurry foliar fertilizer is 500g each time, and the biogas slurry foliar fertilizer is diluted to 30kg by clear water.
The application prospect and the popularization value of the biogas slurry foliar fertilizer are explored through the determination of the plant height, the effective spike, the spike grain number, the thousand grain weight and the yield of the rice. By 1m2Counting the effective ears of the rice; counting the average grain number of the rice grains by using 3 holes of rice; measuring the thousand grain weight of each test area by using an electronic scale; the yield was measured with a scale.
TABLE 1 dosage of different foliar fertilizers on rice
| Index (I) | Tillering stage | Booting stage | Grouting period |
| CK1 | - | - | - |
| CK2 | 1.5kg/hm2Potassium dihydrogen phosphate | 1.5kg/hm2Potassium dihydrogen phosphate | 1.5kg/hm2Potassium dihydrogen phosphate |
| S3 | 7.5kg/hm2Biogas slurry foliar fertilizer | 7.5kg/hm2Biogas slurry foliar fertilizer | 7.5kg/hm2Biogas slurry foliar fertilizer |
TABLE 2 index of rice in each treatment group
| Index (I) | Effective ear | Grain number per ear | Thousand seed weight | Yield of the product |
| CK1 | 12.95±0.02 | 128.08±3.7 | 22.43±0.13 | 8369.97±19.65 |
| CK2 | 12.98±0.21 | 132.88±2.4 | 22.59±0.07 | 8766.64±17.40 |
| S3 | 13.13±0.11 | 141.25±3.4 | 22.96±0.11 | 9580.51±15.75 |
The rice applied with the foliar fertilizer is obviously superior to the rice without the foliar fertilizer in the effective indexes of ears, grain number per ear, thousand grain weight, yield and the like. Compared with rice using monopotassium phosphate, the rice using the biogas slurry foliar fertilizer has the advantages that the effective ear is improved by 1.6%, the ear grain number is improved by 6.3%, the thousand grain weight is improved by 1.6%, and the yield is improved by 9.3%, which shows that the rice can be promoted to tillere, ineffective tillering is reduced, pollination of the rice can be promoted, the accumulation of dry matters of the rice is increased, and the yield of the rice can be obviously improved.
EXAMPLE III
The biogas slurry foliar fertilizer used in the patent is formed by adding amino acid, medium trace elements and other auxiliary materials after secondary concentration of biogas slurry, in 2019, 6-11 months, a contrast test of different varieties of foliar fertilizers applied to rice is started, 1 contrast group (CK1) and 3 treatment groups (S1, S2 and S3) are arranged, and each treatment area is 667m2。
CK 1: spraying clean water once in 3 periods of tillering period, booting period and grouting period of the rice respectively, wherein the amount of the clean water is 30kg each time;
s1: spraying the biogas slurry foliar fertilizer once in 3 periods of a tillering period, a booting period and a grouting period of rice respectively, wherein the dosage of the biogas slurry foliar fertilizer is 400g each time, and the biogas slurry foliar fertilizer is diluted to 30kg by clear water;
s2: the treatment method is the same as S1, and the dosage of the biogas slurry foliar fertilizer is changed to 450 g;
s3: the treatment method is the same as S1, and the dosage of the biogas slurry foliar fertilizer is changed to 500 g.
The application prospect and the popularization value of the biogas slurry foliar fertilizer are explored through the determination of the plant height, the effective spike, the spike grain number, the thousand grain weight and the yield of the rice. By 1m2Counting the effective ears of the rice; counting the average grain number of the rice grains by using 3 holes of rice; measuring the thousand grain weight of each test area by using an electronic scale; the yield was measured with a scale.
TABLE 3 different amounts of biogas slurry foliar fertilizer on rice
| Index (I) | Tillering stage | Booting stage | Grouting period |
| CK1 | - | - | - |
| S1 | 6 | 6 | 6 |
| S2 | 6.75 | 6.75 | 6.75 |
| S3 | 7.5 | 7.5 | 7.5 |
TABLE 4 indices of rice in each treatment group
| Index (I) | Effective ear | Grain number per ear | Thousand seed weight | Yield of the product |
| CK1 | 12.81±2.30 | 118.91±9.85 | 24.12±0.16 | 9256.5±15.3 |
| S1 | 13.33±0.97 | 122.93±16.11 | 24.45±0.48 | 9517.2±15.5 |
| S2 | 13.42±1.56 | 124.05±15.27 | 24.57±0.10 | 9922.4±18.1 |
| S3 | 12.95±2.10 | 117.64±12.30 | 24.35±0.11 | 9055.2±13.2 |
When the foliar fertilizer is sprayed in a proper concentration range, the larger the application amount is, the larger the synergistic effect on effective ears, spike grain number, thousand grain weight and yield is, and the adverse effect on rice can be realized if the foliar fertilizer exceeds the proper concentration. Wherein the optimum concentration for application on rice is 6.75kg/hm2. Compared with the inapplicable leaf fertilizer, 6.75kg/hm of spraying agent is sprayed2The biogas slurry foliar fertilizer improves the effective spike of the rice by 4.5 percent, the grain number of the spike by 4.3 percent, the thousand grain weight by 1.9 percent and the yield by 6.1 percent.
Example four
The biogas slurry foliar fertilizer used in the patent is formed by adding amino acid, medium and trace elements and other auxiliary materials after secondary concentration of biogas slurry, a contrast test of different varieties of foliar fertilizers applied to wheat is started in 11 months to 6 months in 2019 in 2018, 2 contrast groups (CK1 and CK2) and 1 treatment group (X3) are arranged, and each treatment area is 667m2。
CK 1: spraying clear water once in 2 periods of the booting period and the filling period of the wheat respectively, wherein the dosage of the clear water is 30kg each time;
CK 2: respectively spraying foliar fertilizer capable of surviving the flourishing crops once in 2 periods of booting and filling periods of the wheat, wherein the dosage of the foliar fertilizer capable of surviving the flourishing crops is 200g each time, and diluting the foliar fertilizer to 30kg by using clear water;
x3: the biogas slurry foliar fertilizer disclosed by the invention is sprayed once in 2 periods of the booting period and the filling period of wheat respectively, the dosage of the biogas slurry foliar fertilizer is 500g each time, and the biogas slurry foliar fertilizer is diluted to 30kg by clear water.
The application prospect and the popularization value of the biogas slurry foliar fertilizer are explored through the measurement of the grain number per ear, the thousand grain weight and the yield of wheat. Counting the average grain number of each ear by using 3 holes of rice; measuring the thousand grain weight of each test area by using an electronic scale; the yield was measured with a scale.
TABLE 5 dosage of different foliar fertilizers on wheat
| Index (I) | Booting stage | Grouting period |
| CK1 | - | - |
| CK2 | 3kg/hm2Can invigorate one hundred | 3kg/hm2Can invigorate one hundred |
| X3 | 7.5kg/hm2Biogas slurry foliar fertilizer | 7.5kg/hm2Biogas slurry foliar fertilizer |
TABLE 6 indices of wheat for each treatment group
| Index (I) | Grain number per ear | Thousand seed weight | Yield of the product |
| CK1 | 35.72±1.63 | 37.85±0.30 | 7890.46±28.06 |
| CK2 | 36.24±1.30 | 38.49±0.37 | 8327.64±25.49 |
| X3 | 36.38±1.19 | 39.86±0.64 | 8672.41±9.44 |
The wheat applied with the foliar fertilizer is obviously superior to the wheat without the foliar fertilizer in the indexes of grain number per ear, thousand grain weight, yield and the like. Compared with wheat using the foliar fertilizer capable of resisting vigorous growth, the number of grains per ear of the wheat using the biogas slurry foliar fertilizer is increased by 0.4%, the thousand-grain weight is increased by 3.6%, and the yield is increased by 4.1%, which shows that the biogas slurry foliar fertilizer can promote rice pollination and increase the accumulation of rice dry matters, thereby increasing the yield of the wheat.
EXAMPLE five
The biogas slurry foliar fertilizer used in the patent is formed by adding amino acid, medium trace elements and other auxiliary materials after secondary concentration of biogas slurry, in 2018, 6-11 months, and starting a comparison test of different amounts of biogas slurry foliar fertilizers on wheat, 1 control group (CK1) and 3 treatment groups (X1, X2 and X3) are arranged, and each treatment area is 667m2。
CK 1: spraying clear water once in 2 periods of the booting period and the filling period of the wheat respectively, wherein the dosage of the clear water is 30kg each time;
x1: the biogas slurry foliar fertilizer is sprayed once in 2 periods of the booting period and the filling period of wheat respectively, the dosage of the biogas slurry foliar fertilizer is 100g each time, and the biogas slurry foliar fertilizer is diluted to 30kg by clear water;
x2: the treatment method is the same as that of X1, and the dosage of the biogas slurry foliar fertilizer is changed to 300 g;
x3: the treatment method is the same as X1, and the dosage of the biogas slurry foliar fertilizer is changed to 500 g.
The application prospect and the popularization value of the biogas slurry foliar fertilizer are explored through the determination of the plant height, the grain number per ear, the thousand grain weight and the yield of wheat. Counting the average grain number of each ear by using 3 holes of rice; measuring the thousand grain weight of each test area by using an electronic scale; the yield was measured with a scale.
TABLE 7 different amounts of biogas slurry foliar fertilizer on wheat
| Index (I) | Booting stage | Grouting period |
| CK1 | - | - |
| X1 | 1.5 | 1.5 |
| X2 | 4.5 | 4.5 |
| X3 | 7.5 | 7.5 |
TABLE 8 indices of wheat for each treatment group
| Index (I) | Grain number per ear | Thousand seed weight | Yield of the product |
| CK1 | 41.2±4.7 | 35.42±0.11 | 8446.52±13.52 |
| X1 | 42.8±5.4 | 35.84±0.24 | 8502.71±24.21 |
| X2 | 44.2±3.9 | 36.43±0.30 | 8826.82±14.68 |
| X3 | 38.4±2.1 | 36.14±0.67 | 7692.20±8.64 |
When the foliar fertilizer is sprayed in a proper concentration range, the larger the application amount is, the larger the synergistic effect on the grain number per ear, the thousand grain weight and the yield is, and the adverse effect on rice can be realized if the concentration exceeds the proper concentration. Wherein the optimum concentration for application on wheat is 4.5kg/hm2. Compared with the inapplicable leaf fertilizer, the spraying of 4.5kg/hm2The grain number of the wheat in the biogas slurry foliar fertilizer is improved by 7.3 percent, the thousand grain weight is improved by 2.9 percent, and the yield is improved by 4.5 percent.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A preparation method of a biogas slurry foliar fertilizer is characterized in that raw biogas slurry obtained after anaerobic fermentation of poultry manure is filtered and concentrated by a membrane to obtain a nanofiltration concentrated solution, amino acid powder and various chelated microelements are added into the nanofiltration concentrated solution, and the nanofiltration concentrated solution and the amino acid powder and the chelated microelements are uniformly mixed.
2. The process of claim 1, wherein the nanofiltration concentrate is prepared by:
(1) continuously passing the original biogas slurry through two sedimentation tanks to remove large-particle solid insoluble substances which are easy to settle in the biogas slurry;
(2) the obtained biogas slurry passes through a microfiltration machine to remove small solid insoluble matters which are not easy to settle in the biogas slurry;
(3) concentrating the obtained filtrate by a two-section tubular membrane device to obtain ultrafiltration clear liquid under the condition of 10 times;
(4) and (3) concentrating the obtained ultrafiltration clear liquid by a two-section disc type membrane device to obtain nanofiltration concentrated liquid under the condition of 5.8 times.
3. The method according to claim 1, characterized in that the total nutrient of the raw biogas slurry is 0.8-1.0% by mass fraction, the solid content is less than 3%, and the COD is 7500-8000 mg/L.
4. The method according to any one of claims 1 to 3, wherein the nanofiltration concentrate has a solid content of less than 1% by mass, total nutrients of 1.5% -1.8%, humic acid of 2.3% -2.5%, COD of 25000-33000mg/L, amino acids of 2.2-2.5mg/ml, gibberellins of 1.0-1.2mg/ml, indoleacetic acid of 1.5-2.0 mg/ml.
5. The method according to any one of claims 1 to 3, wherein the amount of the amino acid powder added is 3% by mass fraction.
6. The method according to any one of claims 1 to 3, wherein the added chelated trace elements are boron, iron and magnesium in the amounts of 0.5%, 0.3% and 0.5% by mass, respectively.
7. The method according to any one of claims 1 to 3, wherein the poultry manure is chicken manure.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114751436A (en) * | 2022-06-06 | 2022-07-15 | 贵州华锦铝业有限公司 | Process and system for producing series-parallel salt discharge in aluminum oxide production |
| WO2024113047A1 (en) * | 2022-11-28 | 2024-06-06 | Valorix Inc. | Fertilizer mixtures and methods of production thereof |
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| CN101269999A (en) * | 2008-04-25 | 2008-09-24 | 浙江林学院 | Method for separating biological medicine fertilizer effective component from biogas fluid |
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| WO2024113047A1 (en) * | 2022-11-28 | 2024-06-06 | Valorix Inc. | Fertilizer mixtures and methods of production thereof |
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Application publication date: 20210402 |