CN106316685A - Soil-structure conditioner capable of stabilizing yield and fixing carbon and preparation method and application thereof - Google Patents

Abstract

The invention relates to a soil structure conditioner for stabilizing carbon production and sequestration and its preparation method and application. The soil structure conditioner comprises the following components by mass: 30-90 parts of plant materials, 1-40 parts of mineral materials; animal materials 1‑30 parts; 1‑10 parts of compound microbial agent. The soil structure conditioner of the present invention can promote soil carbon sequestration and emission reduction, promote the formation of aggregate structure, improve soil water retention capacity, increase effective water supply; adjust soil pH value, reduce or reduce aluminum toxicity hazard; improve saline-alkali soil, adjust soil salinity Base saturation and cation exchange capacity; adjust the unbalanced soil nutrient system to promote effective nutrient supply.

Description

A soil structure conditioner for stable production and carbon sequestration, its preparation method and application

technical field

The invention relates to the field of agricultural carbon sequestration and emission reduction, in particular to a soil conditioner capable of promoting soil carbon sequestration and stabilizing production, and a preparation method and application thereof.

Background technique

With the increasing concentration of global greenhouse gas emissions, global warming has become an indisputable fact. China is the world's largest emitter of greenhouse gases and is facing enormous pressure to reduce emissions. The Chinese government has promised the world that by 2020, my country will reduce relative carbon dioxide emissions to account for 45% of emissions per unit of GDP (gross domestic product). , the task is arduous; what can agriculture do to reduce emissions as a carbon sink in the ecosystem? In fact, only the newly added soil organic carbon can be included in the carbon sink. At present, the amount of farmland and managed grassland that can be included in the carbon sink is insufficient. One of the reasons is that too many chemicals are used. At present, many people are considering using soil conditioners. and other methods to change the status quo.

Soil conditioner (soil conditioner), also known as soil modifier, soil additive (soil amendment), is a class mainly used to improve soil physical, chemical and biochemical properties, making it more suitable for plant growth, and To achieve certain environmental or ecological functions (such as waste disposal, improvement of soil erosion, prevention of soil degradation, water conservation, carbon sequestration, prevention of soil acidification and salinization, etc.). In recent years, in order to improve the quality of arable land and increase the yield and quality of crops, countries around the world have researched and developed many new carbon-fixing modifiers, such as soil moisturizing agents, soil structure agents, loosening agents, sand-fixing agents, fertilizers, disinfectants and Acid-base reducer and so on. How to use soil amendments to improve soil nutrient supply capacity and promote the fixation of soil organic matter has also become one of the concerns of experts studying soil amendments in various countries. After retrieval, the existing patent applications related to soil conditioners include:

CN101391930A discloses a slope artificial soil conditioner with water retention function, which includes livestock manure, superabsorbent resin, phosphate rock powder, anhydrite powder, humic acid, zeolite powder, chitosan, bentonite, phosphate ester, citric acid . The conditioner has remarkable effects on enhancing soil water holding capacity, reducing water and soil loss, improving soil physical and chemical properties, and promoting vegetation restoration. CN01136114.X discloses a novel improver which is configured by using various composite materials and can quickly and effectively improve soil texture and fertility. CN103897704A discloses a soil conditioner for retaining water and loosening soil, which has better effect of retaining water and loosening soil. CN103756684A discloses a soil structure conditioner that utilizes biochar, polyacrylamide, potassium humate, lauryl alcohol ethoxysulfuric acid to form a polymer and bentonite, has the ability to improve soil water retention, adjust soil pH, and improve soil structure , Promote the formation of aggregate structure and other multiple benefits.

However, the existing soil structure conditioning technology mainly focuses on improving soil water retention performance, improving soil salinization, improving soil structure, passivating heavy metals and other environmental issues, and less consideration is given to the effect of carbon sequestration and stable production.

Contents of the invention

The invention aims to provide a soil structure conditioner with multiple benefits that can promote soil carbon sequestration, reduce fertilizer input and stabilize crop yield.

The technical scheme that realizes the object of the present invention is as follows:

A soil structure conditioner for stably producing and sequestering carbon, comprising the following components by mass: 30-90 parts of plant materials, 1-40 parts of mineral materials; 1-30 parts of animal materials; and 1-10 parts of compound microbial agent.

Preferably, the soil structure conditioner for stably producing and fixing carbon comprises the following components by mass: 36-80 parts of plant material; 12-30 parts of mineral material; 6-20 parts of animal material; 2-7 parts of compound microbial bacterial agent share.

The above-mentioned plant material mainly takes crop straw as the main body, and is specifically composed of crop straw, natural Chinese herbal medicine and plant amino acid powder. According to parts by mass, the composition is: 60-80 parts of crop straw, 10-30 parts of natural Chinese herbal medicine; plant amino acid powder 1-40 servings.

The above-mentioned crop straws are any plant straws grown in the field, preferably one or more of corn straw, wheat straw, rice straw, soybean straw, sugarcane straw, etc.; more preferably, the above-mentioned crop straws are crop straws grown in the field.

The above-mentioned natural Chinese herbal medicines are marigold, capers, cloves, flavescens, herbaceae, Chuanqiong, huangjing, Galla, tobacco, castor, cocklebur, polygonum, chamaejasma, garlic, mugwort leaves, banana peel or walnut peel One or more mixtures in any ratio.

The above-mentioned vegetable amino acid powder is an amino acid raw powder produced from cottonseed meal, soybean meal, rapeseed meal, peanut meal, sunflower meal, camellia oleifera meal, tallow tree meal or castor meal, and the mass percentage of amino acids contained in it is ≥8%.

The above-mentioned mineral materials are composed of potassium-containing mineral components, phosphorus-containing mineral components, calcium- and magnesium-containing mineral components, sulfur- and iron-containing mineral components, rare earth mineral components and auxiliary mineral components. The composition is as follows: 40-70 parts of potassium mineral components; 15-30 parts of phosphorus mineral components; 5-10 parts of calcium and magnesium mineral components; 5-10 parts of sulfur and iron mineral components parts; 1-5 parts of rare earth mineral components; 3-5 parts of auxiliary mineral components.

The above-mentioned potassium-containing mineral components are potassium feldspar, nepheline, leucite, glauconite or mica or any mixture of several kinds; the phosphorus-containing mineral components are apatite; calcium and magnesium The mineral component is calcite, dolomite, limestone or serpentine or a mixture of several in any ratio; the sulfur and iron mineral component is pyrite; the rare earth mineral component is rare earth ore; the auxiliary mineral component Divided into attapulgite clay, bentonite, zeolite, vermiculite or medical stone or a mixture of any ratio.

The above-mentioned animal material is one or a mixture in any ratio of oyster powder, shell powder, chitin or chitosan.

The composite microbial agent contains 100-300 million cfu/g of Bacillus subtilis, 100-200 million cfu/g of Bacillus licheniformis, and 0.1-200 million cfu/g of Bacillus megaterium. g. Bacillus coagulans 0.1-300 million cfu/g, Lactobacillus acidophilus 0.1-300 million cfu/g, Latin Name Bacilluslaterosporus Laubach 0.01-050 million cfu/g , 5406 actinomycetes (Actinobacteria-5406) 0.01-050 million cfu/g, photosynthetic bacteria (referred to as PSB Photosynthetic Bacteria Abbr) 0.01-050 million cfu/g, jelly-like Bacillus (also known as silicate bacteria Bacillus mucilaginosus) 0.01-0.3 million cfu/g, Trichoderma viride (Trichoderma viride) 0.01-0.3 million cfu/g.

Preferably, the composite microbial agent contains 1-300 million cfu/g of Bacillus subtilis, 130-180 million cfu/g of Bacillus licheniformis, 1-200 million cfu/g of Bacillus megaterium, and 2-400 million cfu/g of Bacillus coagulans cfu/g, Lactobacillus acidophilus 100-300 million cfu/g, Bacillus lateralis 0.1-050 million cfu/g, 5406 actinomycetes 0.1-050 million cfu/g, photosynthetic bacteria 0.1-030 million cfu/g, Jelly-like Bacillus 0.05-0.2 million cfu/g, Trichoderma viride 0.05-0.2 million cfu/g.

Preferably, the weight sum of the five bacteria of Bacillus subtilis, Bacillus licheniformis, Bacillus megaterium, Bacillus coagulans and Lactobacillus acidophilus in the composite microbial agent is Bacillus lateralosporus, 5406 actinomycetes, photosynthetic bacteria 9 times of the weight sum of five kinds of bacteria, jelly-like bacillus and trichoderma viride.

Each of the microorganisms in the above-mentioned composite microbial bacterial agent is a conventional strain in the field, and can be obtained by conventional means.

The preparation method of the above-mentioned composite microbial bacterial agent may be to mix the above-mentioned microbial bacterial powders in proportion. Each of the microbial powders can be prepared according to conventional methods in the art. For example, the original strains of each of the microorganisms are subjected to slant culture, shaker culture, fermenter culture and/or solid fermentation spore production in sequence under sterile conditions. The obtained fermentation product is dried and prepared into microbial powder.

The present invention also provides a preparation method of the soil structure conditioner for stable production and carbon sequestration, comprising the following steps:

1) The mineral materials are mixed and calcined at a high temperature of 900-1500°C for 5-20 hours, and then crushed through a 60-150 mesh sieve after cooling;

2) drying and pulverizing the plant materials respectively, and then mixing;

3) drying the animal material, pulverizing it, and passing through a 30-100 mesh sieve;

4) mixing the raw materials of the composite microbial bacterial agent, and passing through a 60-150 mesh sieve;

5) Mix the above raw materials evenly according to the proportion.

Further, the water content of the soil structure conditioner for stable production and carbon fixation is controlled at 8-10wt%.

The present invention also includes the application of the above-mentioned soil structure conditioner in the aspects of stable soil production and carbon fixation. It is especially suitable for soil carbon sequestration in drylands in North China, Northeast China and other regions under the premise of stable crop production.

The dosage of the soil structure conditioner is recommended: 15-50 kg/mu (field crops).

The method of using the soil structure conditioner is recommended: use in conjunction with straw; specifically, spreading the straw on the soil surface (preferably crushing the straw to a length of about 1-5cm or powder), or crushing the straw after the crops are harvested The growth length is about 1-5cm or the powdered form is directly returned to the field, and then the soil structure conditioner is sprinkled on the straw, and the soil is deeply plowed (preferably the plowing depth is 25-35 cm). Deere 754 tractor with a tillage width of 2 meters and a depth of 25-30 cm or a Deere 1204 tractor with a tillage width of 2 meters and a depth of 30-35 cm can be used for deep plowing. The key point of the technology is that the straw and the soil structure conditioner are evenly spread, and the compound microbial agent is sprayed on the straw. Preferably, the crop stalks in the raw material of the soil structure conditioner are last crop stalks.

The raw materials of the soil structure conditioning agent of the present invention come from the natural minerals that widely exist in my country, adopt advanced low-temperature physical processing technology, and convert the crystal structure of the natural minerals into amorphous substances according to a certain feeding sequence, and become citrus soluble chelatin that can be used by plants. Synthetic multi-benefit soil conditioner.

The soil structure conditioner of the present invention is rich in more than 60 kinds of crop essential nutrients, beneficial elements and life elements, wherein the main nutrients are: potassium ≥ 4%, magnesium ≥ 4%, sulfur ≥ 3%, silicon ≥ 15%, calcium ≥ 20%. The product has slow-release and high absorption rate. The root system of crops actively absorbs the nutrients they need by secreting organic acids, avoiding excessive absorption of nutrients. Nutrients are not volatile or lost in the soil, and can be used for next season's crops if they are not used up in the current season. Utilization, nutrient utilization rate is 100%, can adjust and reduce chemical fertilizer input.

The soil structure conditioner of the present invention, when used in conjunction with various straws, can play the role of superimposed effects, can quickly form soil humus, and increase soil organic matter by 1-2%. Humus accounts for 50-70% of organic matter, and the main components of humus are carbon, nitrogen, phosphorus, and sulfur. Applying this technology to 20% of my country's arable land is equivalent to reducing carbon emissions by 300 million tons per year.

The soil structure conditioner of the present invention can promote soil carbon sequestration and emission reduction, promote the formation of aggregate structure, improve soil water retention capacity, increase effective water supply; adjust soil pH value, reduce or reduce aluminum toxicity hazard; improve saline-alkali soil, adjust soil salinity Base saturation and cation exchange capacity; adjust the unbalanced soil nutrient system to promote effective nutrient supply; therefore it is called soil structure conditioner.

Beneficial effect:

First, select the optimal combination of various natural minerals rich in macronutrients, secondary elements, microelements, and beneficial elements needed by plants, and activate various nutrient elements in the minerals through methods such as calcination, crushing, and mixing to effectively provide The mineral nutrients needed by microorganisms and plants can achieve the purpose of balanced plant nutrition, thereby effectively improving the utilization rate of fertilizers needed by plants and enhancing the health of plants.

Second, through the optimized ratio of natural Chinese herbal medicine and plant amino acid powder, coupled with the optimized combination of special animal materials and chitin, chitosan, etc., it can not only further provide various nutrients needed by plants, but also effectively stimulate the healthy growth of plants. Further improve plant stress resistance.

Third, add microbial flora to increase the number and activity of beneficial flora in the rhizosphere soil, inhibit the number and activities of harmful microorganisms in the soil, and use it in conjunction with straw to quickly degrade cellulose, and at the same time promote the formation of soil aggregate structure and improve Soil organic matter. In addition, the effect of soil improvement is obvious, and the sustainable utilization capacity can be significantly enhanced.

Description of drawings

Fig. 1 is a schematic flow chart of the preparation method of the soil structure conditioner of the present invention.

detailed description

The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. If no specific technique or condition is indicated in the examples, it shall be carried out according to the technique or condition described in the literature in this field, or according to the product specification. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that can be purchased through formal channels.

Among them, plant amino acid powder was purchased from Xinjiang Tacheng Xinghe Biological Engineering Co., Ltd. The carbon fixation method described below is the oxidation method of potassium dicatalyst, with reference to Lu Rukun. Soil Agricultural Chemical Analysis Methods. Beijing: China Agricultural Science and Technology Press. 2000. The organic matter determination method is NY/T1121.2-2006 Soil Detection Part Six: Determination of Soil Organic Matter.

Example 1

A soil structure conditioner for stably producing and sequestering carbon, comprising the following components by mass: 60 parts of plant material; 20 parts of mineral material, 6 parts of animal material, and 2 parts of compound microbial agent.

Among them, the plant material consists of 70 parts of corn, rice and wheat straw (the weight ratio of the three is 1:1:1), 10 parts of natural Chinese herbal medicine, and 20 parts of plant amino acid powder in terms of parts by mass.

The above-mentioned natural Chinese herbal medicine is a mixture of marigold, capers, tobacco, castor, mugwort leaves, cocklebur, gall, chuanxiong, flavescens, and hundred parts by weight. The mass percentage of amino acid contained in the plant amino acid powder is more than or equal to 8%.

The mineral material is natural ore, and in parts by mass, it contains 40 parts of potassium-containing mineral components; 20 parts of phosphorus mineral components; 5 parts of calcium- and magnesium-containing minerals; and 5 parts of sulfur- and iron-containing mineral components. 2 parts of rare earth mineral components; 3 parts of auxiliary mineral material components. Among them, the potassium-containing mineral component is a mixture of potassium feldspar, nepheline, mica, and seaweed stone; the phosphorus-containing mineral component is apatite; the calcium-magnesium-containing mineral component is calcite, dolomite, limestone, A mixture of serpentine in equal weight proportions; sulfur and iron mineral components are pyrite; rare earth mineral components are rare earth ore; auxiliary mineral components are attapulgite clay, bentonite, zeolite, vermiculite, medical stone mixture in equal weight proportions.

The animal material is a mixture of oyster powder, shell powder, chitin, chitosan and other weight ratios.

The compound microbial agent contains 250 million cfu/g of Bacillus subtilis, 150 million cfu/g of Bacillus licheniformis, 150 million cfu/g of Bacillus megaterium, 300 million cfu/g of Bacillus coagulans, and 200 million cfu/g of Lactobacillus acidophilus , Bacillus lateralis 0.3 billion cfu/g, 5406 actinomycetes 0.4 billion cfu/g, photosynthetic bacteria 0.1 billion cfu/g, jelly-like Bacillus 0.1 billion cfu/g, Trichoderma viride 0.1 billion cfu/g.

The preparation method of the soil structure conditioner for stable production and sequestration of carbon comprises: mixing mineral materials, calcining at 900°C for 5 hours, and pulverizing through a 150-mesh sieve after cooling; The amino acid powder is dried and crushed separately, passed through a 100-mesh sieve, and then mixed; the animal materials are dried, crushed, and passed through a 100-mesh sieve; the raw materials of the compound microbial agent are mixed, and passed through a 150-mesh sieve; the above plant materials, mineral materials, Pour the animal material and compound microbial agent into the mixer according to the proportion, and fully mix them evenly; measure and pack the evenly mixed materials. The water content is controlled at 8-10wt% to obtain the product.

Example 2

A soil structure conditioner for stably producing and sequestering carbon, comprising the following components by mass: 80 parts of plant material; 30 parts of mineral material, 20 parts of animal material, and 7 parts of compound microbial bacterial agent.

Among them, the plant material consists of 70 parts of corn, rice and wheat straw (the weight ratio of the three is 1:1:1), 15 parts of natural Chinese herbal medicine, and 15 parts of plant amino acid powder in terms of parts by mass.

The above-mentioned natural Chinese herbal medicine is a mixture of marigold, capers, tobacco, castor, mugwort leaves, cocklebur, gall, chuanxiong, flavescens, and hundred parts by weight. The mass percentage of amino acid contained in the plant amino acid powder is more than or equal to 8%.

Mineral materials are natural ores, 60 parts of potassium mineral components; 20 parts of phosphorus mineral components; 8 parts of calcium and magnesium mineral components; 8 parts of sulfur and iron mineral components; 3 parts of rare earth mineral components; auxiliary minerals There are 4 parts of material components. Among them, the potassium-containing mineral component is a mixture of potassium feldspar, nepheline, mica, alginite and other weight ratios; the phosphorus-containing mineral component is apatite; the calcium and magnesium-containing mineral components are calcite, dolomite, limestone, A mixture of serpentine in equal weight proportions; sulfur and iron mineral components are pyrite; rare earth mineral components are rare earth ore; auxiliary mineral components are attapulgite clay, bentonite, zeolite, vermiculite, medical stone mixture in equal weight proportions.

The animal material is a mixture of oyster powder, shell powder, chitin, chitosan and other weight ratios.

The compound microbial agent contains 250 million cfu/g of Bacillus subtilis, 150 million cfu/g of Bacillus licheniformis, 150 million cfu/g of Bacillus megaterium, 300 million cfu/g of Bacillus coagulans, and 200 million cfu/g of Lactobacillus acidophilus , Bacillus lateralis 0.3 billion cfu/g, 5406 actinomycetes 0.4 billion cfu/g, photosynthetic bacteria 0.1 billion cfu/g, jelly-like Bacillus 0.1 billion cfu/g, Trichoderma viride 0.1 billion cfu/g.

The preparation method of the soil structure conditioner for stable production and sequestration of carbon is the same as in Example 1.

Example 3

A soil structure conditioner for stably producing and sequestering carbon, comprising the following components by mass: 36 kg of plant material, 12 kg of mineral material, 9 kg of animal material, and 3 kg of compound microbial agent.

Take 65 kg of rice straw, dry and pulverize it through a 100-mesh sieve; take 18 kg of a mixture of marigold, sophora flavescens, centipede, Chuanxiong, castor, tobacco, and chamaejasma in equal weight ratios, dry and pulverize it through a 100-mesh sieve; Dry 18 kg of plant amino acid powder and dry crush it through a 100-mesh sieve; mix the above raw materials evenly to obtain plant material;

Weigh 40 kilograms of potassium feldspar, 3 kilograms of calcite, 5 kilograms of pyrite, 10 kilograms of apatite, 1 kilogram of bentonite and vermiculite mixture, and 1 kilogram of rare earth. Mesh sieve to obtain mineral materials.

Weigh 5 kg of shell powder, pass through a 100-mesh sieve, and mix with 4 kg of chitosan to obtain animal material.

The compound microbial agent contains 250 million cfu/g of Bacillus subtilis, 150 million cfu/g of Bacillus licheniformis, 150 million cfu/g of Bacillus megaterium, 300 million cfu/g of Bacillus coagulans, and 200 million cfu/g of Lactobacillus acidophilus , Bacillus lateralis 0.3 billion cfu/g, 5406 actinomycetes 0.4 billion cfu/g, photosynthetic bacteria 0.1 billion cfu/g, jelly-like Bacillus 0.1 billion cfu/g, Trichoderma viride 0.1 billion cfu/g.

The raw materials of the compound microbial bacterial agent are mixed and passed through a 60-150 mesh sieve to obtain the compound microbial bacterial agent.

Pour the above plant materials, mineral materials, animal materials, and compound microbial agents into the mixer in proportion, and fully mix them; measure and pack the evenly mixed materials. The water content is controlled at 8-10 wt%, and a soil structure conditioner product with stable carbon sequestration can be obtained.

Comparative example 1

A kind of soil structure conditioning agent, and the difference of embodiment 1 only lies in that the composite microbial bacterial agent is different. The composite microbial agent of this comparative example only contains 0.8 billion cfu/g of Bacillus subtilis, 0.8 billion cfu/g of Bacillus coagulans, 0.4 billion cfu/g of Lactobacillus acidophilus, 0.1 billion cfu/g of photosynthetic bacteria, and jelly-like Bacillus 080 million cfu/g, Trichoderma viride 02 million cfu/g.

Comparative example 2

A kind of soil structure conditioning agent, and the difference of embodiment 2 only lies in that the composite microbial bacterial agent is different. The composite microbial agent of this comparative example only contains 100 million cfu/g of Bacillus licheniformis, 0.5 billion cfu/g of Bacillus coagulans, 0.3 billion cfu/g of Lactobacillus acidophilus, 0.1 billion cfu/g of Bacillus lateralis, jelly sample Bacillus 0.05 billion cfu/g, Trichoderma viride 0.05 billion cfu/g.

Comparative example 3

A kind of soil structure conditioning agent, and the difference of embodiment 3 only lies in that the composite microbial bacterial agent is different. The composite microbial agent of this comparative example only contains 0.5 billion cfu/g of Bacillus subtilis, 0.5 billion cfu/g of Bacillus licheniformis, 0.4 billion cfu/g of Bacillus megaterium, 0.3 billion cfu/g of Bacillus coagulans, and 0.1 million cfu/g of Lactobacillus acidophilus. 100 million cfu/g, 0.06 billion cfu/g of Bacillus lateralis, 0.04 billion cfu/g of 5406 actinomycetes, 0.4 billion cfu/g of photosynthetic bacteria, 0.3 billion cfu/g of Bacillus jelly-like, 0.03 billion cfu of Trichoderma viride /g.

Experimental example 1

Soil carbon sequestration experiment was carried out in a tomato production base in Shunyi, Beijing:

Control group 1: apply 50 kg/mu of compound fertilizer (N:P ₂ O ₅ :K ₂ O=15-15-15), 2000 kg/mu of organic fertilizer;

Control group 2: use 2000 kg/mu of organic fertilizer and 100 kg/mu of crushed corn stalks as base fertilizer, and use 50 kg/mu of soil structure conditioner prepared in Comparative Example 1;

Experimental group: 2000 kg/mu of organic fertilizer and 100 kg/mu of crushed corn stalks were used as base fertilizer, and 50 kg/mu of the soil structure conditioner prepared in Example 1 was applied.

Both the control group 2 and the experimental group did not use any chemical fertilizers.

The experimental results are shown in Table 1. The results showed that the control group 2 had the best tomato yield, soil carbon sequestration and organic matter compared with the control group 1, but the difference was not significant; Both carbon and organic matter increased significantly, indicating increased sustainability of the soil.

Table 1

Experimental example 2

Soil improvement experiments were carried out at a cherry orchard base in Tongzhou, Beijing:

Control group 1: apply 50 kg/mu compound fertilizer (N:P ₂ O ₅ :K ₂ O=15-15-15), 3000 kg/mu organic fertilizer;

Control group 2: use 3000 kg/mu of organic fertilizer and 200 kg/mu of crushed corn stalks as base fertilizer, and use 50 kg/mu of soil structure conditioner prepared in comparative example 2;

Experimental group: 3000 kg/mu of organic fertilizer and 200 kg/mu of crushed corn stalks were used as base fertilizer, and 50 kg/mu of the soil structure conditioner prepared in Example 2 was applied.

Both the control group 2 and the experimental group did not use any chemical fertilizers.

The experimental results are shown in Table 2. The results showed that the cherry yield, soil carbon sequestration and organic matter in the control group 2 were the best compared with the control group 1, but the difference was not significant; Both carbon and organic matter increased significantly, indicating increased sustainability of the soil.

Table 2

Experimental example 3

Experiments were conducted in a rice planting base in Mishan, Heilongjiang Province:

Control group 1: Apply 17 kg/mu compound fertilizer (N:P ₂ O ₅ :K ₂ O=15-15-15), 17 kg/mu urea, 5 kg/mu potassium fertilizer;

Control group 2: Apply 15 kg/mu of compound fertilizer (N:P ₂ O ₅ :K ₂ O=15-15-15), 4 kg/mu of potassium fertilizer and crushed rice stalks from the last stubble, all returned to the field as base fertilizer, 10 kilograms/mu of topdressing urea; 25 kilograms/mu of the soil structure conditioning agent that uses comparative example 3 preparations in addition;

Experimental group: apply 15 kg/mu of compound fertilizer (N:P ₂ O ₅ :K ₂ O=15-15-15), 4 kg/mu of potassium fertilizer and crushed rice stalks from the last stubble, all returned to the field as base fertilizer, topdressing 10 kilograms/mu of urea; 25 kilograms/mu of the soil structure conditioner that uses embodiment 3 preparations in addition.

The experimental results are shown in Table 3. The results showed that compared with control group 1, control group 2 had the best rice yield, soil carbon sequestration and organic matter, but the difference was not significant; Both carbon and organic matter increased significantly, indicating increased sustainability of the soil.

table 3

Experimental example 4

In 2014 and 2016, corn-wheat fertilizer efficiency experiments were carried out in Zibo, Shandong Province for two consecutive years, and the experimental group was simultaneously applied with compound fertilizer base fertilizer (N:P ₂ O ₅ :K ₂ O=15:15:15) 20 kg/mu (compared with conventional The amount of fertilization is reduced by 1/3), and the soil structure conditioner prepared in Example 1 of the present invention is 30 kg/mu; the control group routinely uses compound fertilizers. At the end of the corn season, the organic matter content of the experimental group increased by 14% compared with the control group; the wheat yield of the experimental group was 8978 kg/ha, and the corn yield was 10377 kg/ha, which were 2% and 11% higher than the control group respectively, and the carbon sequestration increased by 20% compared with the control group.

Although the present invention has been described in detail with general descriptions and specific embodiments above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, the modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the protection scope of the present invention.

Claims (9)

1. A soil structure conditioner for stable production and carbon fixation, characterized in that it comprises the following components by mass: 30-90 parts of plant material, 1-40 parts of mineral material; 1-30 parts of animal material; composite microbial bacterial agent 1-10 copies; The plant material consists of: 60-80 parts of crop straw, 10-30 parts of natural Chinese herbal medicine; 1-40 parts of plant amino acid powder; The mineral material is composed by mass parts: 40-70 parts of mineral components containing potassium; 15-30 parts of mineral components containing phosphorus; 5-10 parts of mineral components containing calcium and magnesium; 5-10 parts of mineral components; 1-5 parts of rare earth mineral components; 3-5 parts of auxiliary mineral components; The animal material is one or a mixture of any ratio of oyster powder, shell powder, chitin or chitosan; The composite microbial agent contains 100-300 million cfu/g of Bacillus subtilis, 100-200 million cfu/g of Bacillus licheniformis, 0.1-200 million cfu/g of Bacillus megaterium, and 0.1-100 million cfu/g of Bacillus coagulans , Lactobacillus acidophilus 0.1-100 million cfu/g, Bacillus lateralis 0.01-0.1 million cfu/g, 5406 actinomycetes 0.01-0.1 million cfu/g, photosynthetic bacteria 0.01-0.1 million cfu/g, jelly sample Bacillus 0.01-010 million cfu/g, Trichoderma viride 0.01-010 million cfu/g. 2. soil structure conditioner according to claim 1, is characterized in that, comprises the component of following mass parts: plant material 36-80 parts; Mineral material 12-30 part; Animal material 6-20 part; Composite microbial bacterium 2-7 doses. 3. soil structure conditioning agent according to claim 1, is characterized in that, described composite microbial inoculant contains 1-300 million cfu/g of Bacillus subtilis, 1.3-180 million cfu/g of Bacillus licheniformis, Bacillus megaterium 100-200 million cfu/g, Bacillus coagulans 200-400 million cfu/g, Lactobacillus acidophilus 100-300 million cfu/g, Bacillus lateralis 0.1-050 million cfu/g, 5406 actinomycetes 0.1-0.5 0.1-0.3 billion cfu/g for photosynthetic bacteria, 0.05-0.2 billion cfu/g for Bacillus jelly-like, 0.05-0.2 billion cfu/g for Trichoderma viride. 4. according to the soil structure conditioning agent described in any one of claim 1-3, it is characterized in that, The crop straw is one or more of corn straw, wheat straw, rice straw, soybean straw, and sugarcane straw; and/or, The natural Chinese herbal medicines are marigold, capers, cloves, flavescens, basil, chuanqiong, huangjing, Galla, tobacco, castor, cocklebur, polygonum, chamaejama, garlic, mugwort, banana peel or walnut One or more arbitrary ratio mixtures in the skin; and/or, The plant amino acid powder is an amino acid raw powder produced from cottonseed meal, soybean meal, rapeseed meal, peanut meal, sunflower seed meal, camellia oleifera meal, tallow tree meal or castor oil meal, and the mass percentage of the amino acid contained in it is ≥ 8%; and /or, The potassium-containing mineral component is a mixture of one or more of potassium feldspar, nepheline, leucite, glauconite or mica; the phosphorus-containing mineral component is apatite; calcium and The magnesium mineral component is calcite, dolomite, limestone or serpentine or a mixture of several of them; the sulfur and iron mineral component is pyrite; the rare earth mineral component is rare earth ore; auxiliary minerals The components are attapulgite clay, bentonite, zeolite, vermiculite or medical stone or a mixture of several in any ratio. 5. according to the described soil structure conditioning agent of any one of claim 1-3, it is characterized in that, in the described composite microbial bacterial agent, bacillus subtilis, bacillus licheniformis, bacillus megaterium, bacillus coagulans and lactobacillus acidophilus The sum of the weights of the five bacteria is 9 times the weight of the five bacteria of Bacillus lateralis, 5406 actinomycetes, photosynthetic bacteria, jelly-like bacillus and Trichoderma viride. 6. The soil structure conditioner according to any one of claims 1-3, characterized in that, the water content of the soil structure conditioner for stably producing and fixing carbon is 8-10wt%. 7. the preparation method of any one of claim 1-6 soil structure conditioner, is characterized in that, comprises the following steps: 1) The mineral materials are mixed and calcined at a high temperature of 900-1500°C for 5-20 hours, and then crushed through a 60-150 mesh sieve after cooling; 2) drying and pulverizing the plant materials respectively, and then mixing; 3) drying the animal material, pulverizing it, and passing through a 30-100 mesh sieve; 4) mixing the raw materials of the composite microbial bacterial agent, and passing through a 60-150 mesh sieve; 5) Mix the above raw materials evenly according to the proportion. 8. The application of the soil structure conditioner described in any one of claims 1-6 in the stable production and sequestration of carbon in soil. 9. The application according to claim 8, characterized in that, the dosage of the soil structure conditioner: 15-50 kg/mu.