1. A biomass composite slow-release fertilizer is characterized in that: the biomass composite slow release fertilizer comprises components of a biomass material, microbial strains, a fertilizer, humic acid, urea, mineral substances and organic liquid, wherein the biomass material comprises biomass such as withered trees, manure or withered leaves, the fertilizer comprises a nitrogen fertilizer, a phosphate fertilizer and a potash fertilizer, and the humic acid contains waste sulfuric acid.

2. The biomass composite slow release fertilizer as claimed in claim 1, which is characterized in that: the biomass composite slow release fertilizer comprises, by weight, 80-100 parts of biomass materials, 1-5 parts of microbial strains, 30-60 parts of humic acid, 5-10 parts of urea, 2-8 parts of mineral substances and 20-50 parts of organic liquid, wherein the fertilizer is a combination of 10-50 parts of nitrogen fertilizer with a nitrogen content of 45%, 10-50 parts of phosphate fertilizer with a phosphorus content of 15% and 10-50 parts of potassium fertilizer with a potassium content of 55%.

3. The biomass composite slow release fertilizer as claimed in claim 1, which is characterized in that: the preparation steps of the organic liquid are as follows:

the method comprises the following steps: firstly, part of the biomass material and humic acid are dissolved together and mixed to obtain a mixture.

Step two: the mixture is subjected to differential centrifugation at high temperature by differential centrifugation, and finally filtered and purified to obtain organic liquid.

4. The preparation method of the biomass composite slow release fertilizer as claimed in claim 1 is characterized by comprising the following steps: the preparation steps of the biomass composite slow release fertilizer are as follows:

s1, firstly, mixing the biomass material and the fertilizer to obtain a mixture;

s2, mixing the mixture with organic liquid to obtain a mixed solution;

s3, mixing the microbial strains, urea and minerals to obtain a microbial compound solution, and then centrifuging and filtering to obtain a purified solution;

and S4, finally, mixing the mixed solution obtained in the S2 and the microbial compound solution obtained in the S3, and mixing, granulating and drying to finally obtain the biomass material composite slow-release fertilizer.

5. The preparation method of the biomass composite slow release fertilizer as claimed in claim 1 is characterized by comprising the following steps: the pH value of the organic liquid obtained by dissolving the biomass material and the humic acid is 6-8, and the biomass extracting solution with the organic matter content of 400-600mg/L is obtained.

6. The preparation method of the biomass composite slow release fertilizer as claimed in claim 1 is characterized by comprising the following steps: the proportion of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer in the fertilizer is 1: 1: 1, the combination of the yeast, the acetobacter and the saprophytic bacteria and other decomposition bacteria.

Background

The fertilizer can provide one or more nutrient elements necessary for crops, can improve the soil property and improve the soil fertility, and is one of material bases of agricultural production; the fertilizer has various types, and the compound fertilizer and urea are widely matched for use in the current agricultural production so as to play a role in promoting the growth of crops.

The single yield of grains in China is increased year by applying the chemical fertilizer in the field, but the large amount of the chemical fertilizer not only increases the investment cost, but also aggravates soil acidification and hardening and causes water eutrophication. Especially, the excessive application of the nitrogen fertilizer can cause a series of cachexia, such as induction of crop diseases and insect pests, greenhouse effect and the like.

The existing fertilizers are chemical fertilizers containing nitrogen, phosphorus and oxygen, the use of the fertilizers can accelerate soil acidification and pollute water sources, and therefore a biomass composite slow-release fertilizer and a preparation method thereof are provided.

Disclosure of Invention

The invention aims to provide a biomass composite slow-release fertilizer and a preparation method thereof, and aims to solve the problems in the background art.

In order to achieve the purpose, the biomass composite slow release fertilizer comprises biomass materials, microbial strains, fertilizers, humic acid, urea, mineral substances and organic liquid, wherein the biomass materials comprise biomass such as withered trees, manure or withered leaves, the fertilizers comprise nitrogen fertilizers, phosphate fertilizers and potassium fertilizers, and the humic acid contains waste sulfuric acid.

Preferably, the components of the biomass composite slow-release fertilizer comprise 80-100 parts by weight of biomass materials, 1-5 parts by weight of microbial strains, 30-60 parts by weight of humic acid, 5-10 parts by weight of urea, 2-8 parts by weight of mineral substances and 20-50 parts by weight of organic liquid, wherein the fertilizer is a composite of 10-50 parts of nitrogen fertilizer with the nitrogen content of 45%, 10-50 parts of phosphate fertilizer with the phosphorus content of 15% and 10-50 parts of potassium fertilizer with the potassium content of 55%.

Preferably, the preparation steps of the organic liquid are as follows:

the method comprises the following steps: firstly, part of the biomass material and humic acid are dissolved together and mixed to obtain a mixture.

Step two: and (3) carrying out differential centrifugation on the mixture at high temperature by using a differential centrifugation method, finally filtering and purifying to obtain organic liquid, obtaining high-purity organic liquid by the steps, and mixing the organic liquid and the fertilizer to obtain the biomass composite slow-release fertilizer.

Preferably, the preparation steps of the biomass composite slow release fertilizer are as follows:

s1, firstly, mixing the biomass material and the fertilizer to obtain a mixture;

s2, mixing the mixture with organic liquid to obtain a mixed solution;

s3, mixing the microbial strains, urea and minerals to obtain a microbial compound solution, and then centrifuging and filtering to obtain a purified solution;

and S4, finally, mixing the mixed solution obtained in the step S2 with the microbial compound solution obtained in the step S3, and mixing, granulating and drying to finally obtain the biomass material composite slow-release fertilizer.

Preferably, the pH value of the organic liquid obtained by dissolving the biomass material and the humic acid together is 6-8, a biomass extracting solution with the organic matter content of 400-600mg/L is obtained, the pH value of the organic solution is neutral, no damage is caused to the soil, the soil in the farmland is basically alkaline, and the neutral solution can neutralize the alkalinity in the soil to protect the soil.

Preferably, the ratio of the nitrogenous fertilizer, the phosphate fertilizer and the potash fertilizer in the fertilizer is 1: 1: the combination of the saccharomycetes, the acetobacter, the saprophytic bacteria and other decomposition bacteria has various microorganisms, can well degrade organic matters in the fertilizer, accelerates the degradation of the fertilizer, is beneficial to the absorption of the fertilizer by soil, increases the nutrient content of the soil and ensures that crops grow high and large.

Compared with the prior art, the invention has the beneficial effects that:

the biomass composite slow-release fertilizer prepared by the invention can well relieve the problems of soil hardening, water eutrophication and the like, can protect the environment, is convenient for the degradation of the fertilizer in soil, is very convenient, and can improve the intensity of photosynthesis, promote the formation of starch and sugar in crops, enhance the stress resistance and disease resistance of the crops and improve the absorption and utilization of nitrogen by the crops. The function of the microbial fertilizer is the fixation, decomposition and secretion of bacteria, and the change of nutrient in soil is influenced. In addition, the increase of beneficial bacteria in the soil can compel the reduction of harmful bacteria in the soil, so that the diseases of soil crops can be reduced, the degradation of the fertilizer can be accelerated, the absorption of the fertilizer by the soil is facilitated, the nutrient content of the soil is increased, and the crops can grow high and large.

Drawings

FIG. 1 is a schematic view of the overall flow structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.

Referring to fig. 1, a biomass composite slow release fertilizer and a preparation method thereof are shown in the figure, wherein the components of the biomass composite slow release fertilizer comprise biomass materials, microbial strains, fertilizers, humic acid, urea, minerals and organic liquid, the biomass materials comprise biomass such as withered trees, manure or withered leaves, the fertilizers comprise nitrogen fertilizers, phosphate fertilizers and potassium fertilizers, and the humic acid contains waste sulfuric acid.

The biomass composite slow release fertilizer comprises, by weight, 80-100 parts of biomass materials, 1-5 parts of microbial strains, 30-60 parts of humic acid, 5-10 parts of urea, 2-8 parts of mineral substances and 20-50 parts of organic liquid, wherein the fertilizer is a combination of 10-50 parts of nitrogen fertilizer with a nitrogen content of 45%, 10-50 parts of phosphate fertilizer with a phosphorus content of 15% and 10-50 parts of potassium fertilizer with a potassium content of 55%.

The preparation steps of the organic liquid are as follows:

the method comprises the following steps: firstly, part of the biomass material and humic acid are dissolved together and mixed to obtain a mixture.

Step two: the mixture is subjected to differential centrifugation at high temperature by differential centrifugation, and finally filtered and purified to obtain organic liquid.

The pH value of organic liquid obtained by dissolving the biomass material and the humic acid together is 6-8, biomass extracting solution with the organic matter content of 400-600mg/L is obtained, and the proportion of nitrogen fertilizer, phosphate fertilizer and potassium fertilizer in the fertilizer is 1: 1: 1, the combination of the yeast, the acetobacter and the saprophytic bacteria and other decomposition bacteria.

Example one

The embodiment provides a biomass material composite slow-release fertilizer and a preparation method thereof. The preparation method comprises the following steps:

the first step is as follows: firstly, 20 parts of biomass material and 30 parts of humic acid are mixed to obtain organic solution.

The second step is that: and mixing 2 parts of microbial strains, 5 parts of urea and 4 parts of mineral substances to obtain the microbial ingredient liquid.

The third step: mixing 25 parts of nitrogenous fertilizer, 25 parts of phosphate fertilizer, 25 parts of potash fertilizer and 80 parts of biomass material in an environment with the temperature of 60 ℃, grinding and crushing, and then cooling.

The fourth step: and mixing the material cooled in the third step with 25 parts of organic solution and microbial dosing solution in an environment suitable for the survival of microbes, stirring, and finally drying.

The fifth step: and (4) granulating and packaging the biomass composite slow-release fertilizer obtained in the fourth step to obtain a finished product of the biomass composite slow-release fertilizer.

Wherein in the operation process, the proportion of the nitrogenous fertilizer, the phosphate fertilizer and the potash fertilizer is 1: 1: 1, the content of organic matters is 400mg/L of biomass extract.

Example two

The embodiment provides a biomass material composite slow-release fertilizer and a preparation method thereof. The preparation method comprises the following steps:

the first step is as follows: firstly, 25 parts of biomass material and 40 parts of humic acid are mixed to obtain an organic solution.

The second step is that: 3 parts of microbial strains, 8 parts of urea and 6 parts of mineral substances are mixed to obtain the microbial ingredient liquid.

The third step: mixing 20 parts of nitrogenous fertilizer, 40 parts of phosphate fertilizer, 20 parts of potash fertilizer and 90 parts of biomass material in an environment with the temperature of 55 ℃, grinding and crushing, and then cooling.

The fourth step: and mixing the material cooled in the third step with 30 parts of organic solution and microbial dosing solution in an environment suitable for the survival of microbes, stirring and finally drying.

The fifth step: and (4) granulating and packaging the biomass composite slow-release fertilizer obtained in the fourth step to obtain a finished product of the biomass composite slow-release fertilizer.

Wherein in the operation process, the proportion of the nitrogenous fertilizer, the phosphate fertilizer and the potash fertilizer is 1: 2: 1, the content of organic matters is 500mg/L of biomass extract.

The components of each substance in the embodiment are different from those in the embodiment, and other processes are the same.

EXAMPLE III

The embodiment provides a biomass material composite slow-release fertilizer and a preparation method thereof. The preparation method comprises the following steps:

the first step is as follows: firstly, 30 parts of biomass material and 45 parts of humic acid are mixed to obtain an organic solution.

The second step is that: 5 parts of microbial strains, 10 parts of urea and 8 parts of mineral substances are mixed to obtain the microbial ingredient liquid.

The third step: 30 parts of nitrogenous fertilizer, 30 parts of phosphate fertilizer, 45 parts of potash fertilizer and 100 parts of biomass material are mixed in an environment with the temperature of 50 ℃, ground and crushed, and then cooled.

The fourth step: and mixing the material cooled in the third step with 40 parts of organic solution and microbial dosing solution in an environment suitable for the survival of microbes, stirring and finally drying.

The fifth step: and (4) granulating and packaging the biomass composite slow-release fertilizer obtained in the fourth step to obtain a finished product of the biomass composite slow-release fertilizer.

Wherein in the operation process, the proportion of the nitrogenous fertilizer, the phosphate fertilizer and the potash fertilizer is 2: 2: 3, the content of organic matters is 600mg/L of biomass extract.

The components of each substance in the embodiment are different from those in the embodiment, and other processes are the same.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.