Functional organic fertilizer for shajiang black soil as well as preparation method and application of functional organic fertilizer

Abstract

The invention discloses a functional organic fertilizer for shajiang black soil as well as a preparation method and application thereof.According to the functional organic fertilizer, stack retting fermented livestock and poultry manure, fermented straw, plant ash and peat soil are used as effective ingredients and complement each other in the aspects of nutrients and physical characteristics, and the functional organic fertilizer is applied to the shajiang black soil. By replacing part of chemical fertilizers with the formula organic fertilizer, the fertilizer consumption can be reduced, the soil plough layer structure is improved, the leaf chlorophyll content is increased, the growth condition is improved, the wheat yield is increased, and meanwhile the soil fertility is improved and fertilized.

Description

Technical Field

[0001] The invention belongs to the technical field of organic fertilizers, and in particular relates to a functional organic fertilizer for sand ginger black soil, a preparation method and an application thereof. Background Art

[0002] The Huanghuaihai region is the main wheat producing area in my country. Among them, the sandy black soil is a typical farmland soil type in the Huanghuaihai region. The sandy black soil has obvious swelling and shrinkage. In actual production, the sandy black soil plots are prone to waterlogging and drought, the soil is heavy and easy to compact, the tillage is poor, and the nutrient content is low. On the one hand, long-term improper farming measures and unreasonable fertilization have led to the shallowing of the soil tillage layer and the appearance of the plow bottom layer, which has affected the further increase in the yield of crops such as wheat. On the one hand, the sandy black soil area is large, and on the other hand, this type of soil has great potential for increasing production. Therefore, the continued high yield of crops such as wheat in the Huanghuaihai sandy black soil area is the main problem currently faced.

[0003] Studies have shown that reasonable farming measures and the reasonable application of functional organic fertilizers can improve the soil structure of the plough layer, reduce soil bulk density, increase soil water storage and retention capacity, and increase soil nutrient content; straw contains a large amount of organic matter and nutrients such as nitrogen, phosphorus and potassium. After returning to the field, it is quickly decomposed in the soil and promotes the formation of large aggregates, but it takes a certain amount of time to mature in the field. At the same time, the quality of straw returning to the field affects the quality of sowing and seedling emergence, and partially affects wintering and reduces the cold resistance of seedlings. On the one hand, the stability of soil aggregates needs to be considered in the sand ginger black soil plot, and attention should also be paid to the balance of soil nutrients, such as the impact on the bulk density of the plough layer soil, the impact on soil porosity, and the balance of soil organic matter and nutrients such as nitrogen, phosphorus and potassium; in addition, under long-term straw return to the field, changes in soil microhabitats, such as soil nutrient enrichment, the risk of serious soil stratification, and the increase in prevention and control management costs caused by pathogens and insect eggs carried by straw, affect the normal growth of crops such as wheat. Long-term straw return to the field may cause the decomposition of straw to consume soil nitrogen.

[0004] The results of the study in the Shajiang black soil area show that the functional organic fertilizer with a reasonable formula can be applied to farmland through tillage, which can effectively increase the organic matter content and nitrogen, phosphorus and potassium nutrient content in the soil plough layer, and is conducive to the formation of large aggregates. The replacement of chemical fertilizers with organic fertilizers can improve the nutrient distribution characteristics of soil aggregates and the characteristics of microbial communities. Replacing chemical fertilizers with organic fertilizers is also the direction of green development of farmland. By partially replacing nitrogen fertilizers, the use of chemical fertilizers can be reduced, the health of soil functions in the Shajiang black soil area can be improved, and the yield of crops such as wheat can be increased.

[0005] The production of organic fertilizers is limited by environmental conditions, sources of raw materials, labor costs and sites. Nowadays, there are few special composting habits in rural areas. In agricultural production, the use of organic fertilizers mainly comes from commercial organic fertilizers or fermented animal manure. Regarding the formula of organic fertilizers, including the addition of livestock and poultry manure, straw, and other auxiliary materials, the formula is relatively chaotic, the physical and chemical properties of organic fertilizers are relatively poor, the level of standardization is low, and the product differentiation is large, especially its use effect is difficult to guarantee. At the same time, the price is relatively expensive, and the public acceptance is not high. Through investigation, it was found that less functional organic fertilizers were applied in the cultivation and fertilization of sand ginger black soil. Some high-value organic fertilizers were mainly used for economic crops with high economic added value such as flowers, fruits and vegetables. Therefore, a safe, economical and reasonable organic fertilizer formula is needed in production. On the one hand, it can improve the soil and increase the sustainable production capacity of farmland, and on the other hand, it can increase crop yield and quality. Summary of the invention

[0006] In view of the defects and problems existing in the existing fertilization of sand ginger black soil, the present invention provides a functional organic fertilizer for sand ginger black soil and a preparation method and application thereof, which can improve the soil properties of sand ginger black soil, enhance soil fertility, reduce the amount of fertilizer used, create a better growth environment for crops, and improve crop yield and quality.

[0007] The solution adopted by the present invention to solve the technical problem is: a functional organic fertilizer for sand ginger black soil, which comprises raw materials in the following proportions based on the total weight of the organic fertilizer: 70-75% of decomposed livestock and poultry manure, 10-15% of decomposed straw, 10% of plant ash and 5% of peat soil.

[0008] The decomposed livestock and poultry manure includes one or more of decomposed chicken manure, decomposed cow manure, and decomposed sheep manure. A method for preparing functional organic fertilizer for sand ginger black soil comprises the following steps:

[0009] Step 1, fully mixing fresh livestock and poultry manure with enzyme preparations and microbial preparations for fermentation; the fresh livestock and poultry manure includes one or more of fresh chicken manure, fresh cow manure, and fresh sheep manure;

[0010] Step 2: Mix the straw and the microbial agent for fermentation, and the ratio of the microbial agent to the straw is 1:5000;

[0011] Step three, fully and evenly mix the decomposed livestock and poultry manure, decomposed straw, wood ash and peat soil, wherein the mixing ratio of the decomposed livestock and poultry manure, decomposed straw, wood ash and peat soil is: 70-75% of decomposed chicken manure, 10-15% of decomposed straw, 10% of wood ash and 5% of peat soil.

[0012] The fermentation time in step 1 and step 2 is the same, and the fermentation time is adjusted according to the fermentation season, 15 days in spring and autumn, 11-12 days in summer, and 20 days in winter.

[0013] In the step 2, the straw is crushed and mixed with the microbial agent.

[0014] The method further comprises a step 4 of sieving the mixed raw materials.

[0015] Application of functional organic fertilizer for sand ginger black soil.

[0016] Beneficial effects of the invention: the functional organic fertilizer for sand ginger black soil provided by the invention, as well as its preparation method and application, uses composted and fermented livestock and poultry manure, fermented straw, wood ash and peat soil as effective ingredients, and has complementary advantages in nutrients and physical properties. In sand ginger black soil plots, the organic fertilizer of this formula can replace part of the chemical fertilizer to reduce the amount of fertilizer used, improve the soil tillage layer structure, increase the chlorophyll content of leaves, improve the growth condition and increase wheat yield, while the soil fertility is improved and fertilized. In the current situation where extreme weather disasters occur frequently in agricultural production, a better growth environment is provided for the stress-resistant growth of crops, and a foundation is laid for sustained high grain production. The invention is suitable for use in sand ginger black soil areas, and according to the application level of 150-200kg per mu of land, the cost is relatively appropriate, the effect is remarkable, and it can improve soil properties, enhance soil fertility, reduce the amount of fertilizer used, create a better growth environment for crops, and simultaneously improve yield and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic table of the content of materials with different particle sizes according to the present invention.

[0018] Figure 2 It is a schematic diagram of the change in bulk density of the soil in the cultivated layer under different treatments in the effect examples of the present invention.

[0019] Figure 3 It is a schematic diagram of the influence of the tillage method and the functional organic fertilizer on the chlorophyll content in the effect example of the present invention.

[0020] Figure 4 It is a schematic diagram of the effects of the tillage method and functional organic fertilizer on the winter wheat yield and the three elements in the effect example of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Example 1

[0023] In response to the problems raised in the above background technology, the present embodiment provides a functional organic fertilizer for sand ginger black soil. Based on the total mass of the organic fertilizer, the organic fertilizer includes raw materials in the following proportions: 70-75% of decomposed livestock and poultry manure, 10% of decomposed straw, 10% of wood ash, and 5% of peat soil. The decomposed livestock and poultry manure includes one or more of decomposed chicken manure, decomposed cow manure, and decomposed sheep manure.

[0024] The method for preparing functional organic fertilizer for sandy ginger black soil comprises the following steps:

[0025] Step 1, fully mix fresh livestock and poultry manure with enzyme preparations and microbial preparations for fermentation; the fermentation time is adjusted according to the fermentation season, 15 days in spring and autumn, 11-12 days in summer, and 20 days in winter; the fresh livestock and poultry manure includes one or more of fresh chicken manure, fresh cow manure, and fresh sheep manure; deodorizing agents are used every 15 days in summer to deodorize malodorous odor sources such as hydrogen sulfide and ammonia generated by manure fermentation, deodorizing and deodorizing for 25 days in spring and autumn, and deodorizing and deodorizing for 40 days in winter.

[0026] Step 2: Mix the straw and the microbial agent for fermentation, and crush the straw before mixing and fermenting, and then mix it with the microbial agent. The fermentation time is adjusted according to the fermentation season, 15 days in spring and autumn, 11-12 days in summer, and 20 days in winter; and the ratio of the microbial agent to the straw is 1:5000;

[0027] Step three, mix the decomposed livestock and poultry manure, decomposed straw, wood ash and peat soil thoroughly and evenly. There are many ways to mix. This embodiment adopts the method of blending and tossing for mixing. The mixing ratio of the decomposed livestock and poultry manure, decomposed straw, wood ash and peat soil is: 70-75% of decomposed chicken manure, 10-15% of decomposed straw, 10% of wood ash and 5% of peat soil.

[0028] Step 4, sieving the mixed raw materials. The functional organic fertilizer preparation method for sand ginger black soil provided in this embodiment reduces the content of pathogens and insect eggs through fermentation, deodorization, blending, turning, screening and other procedures, ensures the organic matter content and nutrient content, and exerts the effect of improving each material component in the soil.

[0029] After indoor processing, sampling, weighing and analysis, such as Figure 1 As shown, the particle size of ≤0.15mm and 0.3-0.9mm is relatively large, accounting for 27.46% and 29.17% of the total weight respectively, 0.9-2.0mm and 0.15-0.3mm particle size materials account for 20.03% and 18.31% of the total weight, and the particle size of >2mm accounts for an average of 5.03%. From the analysis of each component, the composition of materials with a particle size of less than 1mm accounts for 74.94%, and the materials of each particle size are relatively uniform and fine, without large particles. Its physical composition ensures the application function of the organic fertilizer, and is also conducive to improving the tillage structure of the sand ginger black soil and the growth of crops.

[0030] Table 1 Key indicators for testing

[0031] project Total nitrogen % Phosphorus pentoxide% Potassium oxide% Organic matter% Moisture content% content 1.86 0.75 2.37 30.15 29.0

[0032] As shown in Table 1, the key indicators such as the total nutrient content and organic matter content detected can all meet the requirements of the standard content of organic fertilizer, indicating that the functional organic fertilizer of the present invention can fully meet the corresponding detection requirements.

[0033] By composting and fermenting chicken manure, fermented pig manure, fermented sheep manure, fermented straw, plant ash, and peat soil as effective ingredients in this embodiment, livestock and poultry manure provides the organic matter and nitrogen nutrients necessary for organic fertilizer, fermented straw and plant ash are similar to biomass charcoal, which have the effect of providing potassium, and have small particles to improve soil suitability, peat soil has the characteristics of rich organic matter content, light texture and high compressibility, etc., the above components have complementary advantages in terms of nutrients and physical properties such as composition of materials with different particle sizes, and have synergistic effects in improving soil aggregate formation, soil tillage layer structure and soil nutrient improvement, in the sand ginger black soil block, the organic fertilizer of this formula can replace part of the chemical fertilizer to reduce the amount of fertilizer used, improve the physical and chemical properties and tillage layer structure of the soil, provide a better physical basis for crop growth, increase the chlorophyll content of crop leaves, improve the growth condition and increase wheat yield, and at the same time, the soil fertility is improved and fertilized, and in the current situation of frequent extreme weather disasters in agricultural production, a better growth environment is provided for the stress-resistant growth of crops, laying a foundation for sustained high grain production.

[0034] The functional organic fertilizer of the present invention has the outstanding feature of improving soil properties, enhancing soil fertility, reducing fertilizer usage, creating a better growth environment for crops, and simultaneously improving yield and quality.

[0035] Example 1, a functional organic fertilizer for sand ginger black soil, based on the total mass of the organic fertilizer, includes raw materials in the following proportions: 70% decomposed livestock and poultry manure, 15% decomposed straw, 10% wood ash, and 5% peat soil, and the decomposed livestock and poultry manure is decomposed chicken manure.

[0036] Example 2, a functional organic fertilizer for sand ginger black soil, based on the total mass of the organic fertilizer, includes raw materials in the following proportions: 75% decomposed livestock and poultry manure, 10% decomposed straw, 10% wood ash, and 5% peat soil, and the decomposed livestock and poultry manure is decomposed chicken manure.

[0037] Example 3, a functional organic fertilizer for sand ginger black soil, based on the total mass of the organic fertilizer, includes raw materials in the following proportions: 72% decomposed livestock and poultry manure, 13% decomposed straw, 10% wood ash, and 5% peat soil, and the decomposed livestock and poultry manure is decomposed chicken manure.

[0038] Comparative Example 4, a functional organic fertilizer for sand ginger black soil, based on the total mass of the organic fertilizer, includes raw materials in the following proportions: 65% of decomposed livestock and poultry manure, 15% of decomposed straw, 15% of wood ash, and 5% of peat soil, wherein the decomposed livestock and poultry manure is decomposed chicken manure.

[0039] Comparative Example 5, a functional organic fertilizer for sand ginger black soil, based on the total mass of the organic fertilizer, comprises raw materials in the following proportions: 80% of decomposed livestock and poultry manure, 10% of decomposed straw, 5% of wood ash, and 5% of peat soil, wherein the decomposed livestock and poultry manure is decomposed chicken manure.

[0040] Table 2 Nutrient status of each treatment

[0041]

[0042]

[0043] According to the relevant requirements of organic fertilizer, the nutrient contents of Example 1, Example 2, and Example 3 can all reach the organic fertilizer requirement of 4%, reaching 4.98%, 4.72%, and 4.81% respectively. At the same time, the organic matter content can reach the organic fertilizer requirement of 30%. For Example 4, when the decomposed chicken manure is less than 70%, although the total nutrient content reaches the organic fertilizer requirement of 4%, the organic matter content is difficult to reach the organic fertilizer requirement. For Example 5, when the wood ash is less than 10%, the total nutrient content does not meet the organic fertilizer requirement, and the total nutrient content is 3.98%. By optimizing the formula, it can be ensured that the organic matter content and the total nutrient content meet the organic fertilizer standard.

[0044] The functional organic fertilizer of the present invention is suitable for use in the sandy ginger black soil area. It is applied at a level of 80-240 kg per mu of land. The median level can be used in field production. The cost is relatively appropriate and the yield-increasing effect is significant. Specifically:

[0045] Example 1: A functional organic fertilizer for sand ginger black soil. The conventional nitrogen application rate is 15 kg per mu. Under tillage conditions, 10% of the nitrogen is replaced with 1.5 kg of pure nitrogen, and 80 kg of organic fertilizer is applied per mu.

[0046] Example 2: A functional organic fertilizer for sand ginger black soil. The conventional nitrogen application rate is 15 kg per mu. Under tillage conditions, 20% of the nitrogen is replaced with 3.0 kg of pure nitrogen, and 160 kg of organic fertilizer is applied per mu.

[0047] Usage example 3: a functional organic fertilizer for sand ginger black soil. The conventional nitrogen application rate is 15 kg per mu. Under tillage conditions, 30% of the nitrogen is replaced with 4.5 kg of pure nitrogen, and 240 kg of organic fertilizer is applied per mu.

[0048] Table 3 Calculation results of nitrogen replacement under tillage conditions

[0049] Replacement ratio Replacement of nitrogen Amount of organic fertilizer applied Yield increase effect % 10% Replacement 1.5kg 80kg 5.46 20% replacement 3.0kg 160kg 7.59 30% replacement 4.5kg 240kg 6.37

[0050] The functional organic fertilizer of the present invention is suitable for use in the sandy ginger black soil area, and is applied at a level of 80-240 kg per mu of land. Based on the effect example 1, the fertilizer replacement level can be known, as shown in Table 3. The median level can be used in field production, the cost is relatively appropriate, and the yield-increasing effect is significant.

[0051] Effect Example 1

[0052] The functional organic fertilizer for Shajiang black soil provided by any one of Examples 1-4 in Example 1 and the conventional fertilizer provided by Comparative Example 1 were applied to a field experiment of wheat planting in Shajiang black soil; the tested wheat variety: Zhengmai 1860 (provided by the Wheat Institute of Henan Academy of Agricultural Sciences).

[0053] Experimental treatment: Under the conditions of rotary tillage and plowing, the amount of nitrogen fertilizer replaced by different organic fertilizers, the fertilizer amount per hectare is 150kg of pure nitrogen, 120kg of phosphorus pentoxide, and 90kg of potassium oxide. Each treatment is calculated according to the amount of nitrogen fertilizer replaced, a total of 8 test cases:

[0054] Test case T1: rotary tillage + conventional fertilizer;

[0055] Test Example T2: Rotary tillage + the functional organic fertilizer of the present invention replacing 10% nitrogen fertilizer;

[0056] Test Example T3: Rotary tillage + the functional organic fertilizer of the present invention replacing 20% ​​of nitrogen fertilizer;

[0057] Test Example T4: Rotary tillage + the functional organic fertilizer of the present invention replaces 30% of nitrogen fertilizer;

[0058] Test case T5: tillage + conventional fertilizer;

[0059] Test Example T6: Tillage + replacement of 10% nitrogen fertilizer with the functional organic fertilizer of the present invention;

[0060] Test Example T7: Tillage + replacement of 20% nitrogen fertilizer with the functional organic fertilizer of the present invention;

[0061] Test Example T8: Tillage + replacement of 30% nitrogen fertilizer with the functional organic fertilizer of the present invention;

[0062] Overview of the field test site:

[0063] The experiment was conducted in Qinghe Township, Fangcheng County, Nanyang City during the wheat growing season of 2021-2024. It belongs to the warm temperate continental monsoon climate zone with an average annual temperature of 15.6℃, an average annual sunshine hours of 2128 hours, and an average annual precipitation of 890 mm.

[0064] Cultivation conditions: The test site is flat, the soil type is sandy ginger black soil, the soil fertility is uniform, the previous crop is corn, and all the straw is returned to the field. Before sowing: Sowing on October 20, wheat seeding machine drill sowing, row spacing 20cm, hectare sowing rate 165kg. The cultivation and management conditions of each plot are consistent, the field management method is consistent with the high-yield field, and the harvest is timely at maturity.

[0065] Experimental design: The experiment adopted a randomized block design with 3 replicates and a plot area of ​​66m 2 (10m×6.6m). The emergence of wheat seedlings was investigated 15 days after emergence, and samples were taken to investigate the development of wheat populations and individuals during the key growth period, and the growth of wheat in the field was observed and recorded.

[0066] Yield determination: Take samples to measure yield during the harvest period and calculate the yield and yield increase rate.

[0067] Data analysis: The three-year field test data showed similar trends, with 2023-2024 as the standard and other years as references. EXCEL was used for data analysis and mapping.

[0068] Test results:

[0069] Table 4 Effects of tillage methods and functional organic fertilizers on seedling emergence and population

[0070]

[0071] As can be seen from Table 4, the black soil of sand ginger has a greater impact on seedling emergence. Under the same sowing amount, the application of organic fertilizer makes the seedling emergence better than the traditional fertilization treatment, and the seedling emergence of tillage and rotary tillage treatments is basically the same; in the same wintering period, the group applying organic fertilizer is slightly higher than the traditional fertilization treatment, which shows that the application of functional organic fertilizer is beneficial to the suitable winter group.

[0072] like Figure 2 As shown in the figure, after organic fertilizer was applied along with tillage measures, deep tillage reduced the bulk density of 20-40cm. At the same time, under the same tillage conditions, after applying organic fertilizer, the bulk density of 0-20cm and 20-40cm soil was also reduced, which was beneficial to the rooting of crops and the infiltration and storage of water. It can reduce the bulk density of soil.

[0073] Table 5 Effects of tillage methods and functional organic fertilizers on soil moisture content (%)

[0074]

[0075] Judging from the soil moisture content in different periods, the soil moisture content of each treatment during the sowing period was basically the same, indicating that the foundation of the experimental site was consistent. Judging from the soil topsoil moisture during the overwintering period, jointing period and flowering period, under the same tillage method, the soil moisture content of the functional organic fertilizer was slightly higher than that of the traditional fertilization treatment, indicating that it had a better water storage effect. For example, during the overwintering period, the topsoil moisture content of T3 and T7 increased by 0.75 and 1.8 percentage points respectively compared with T1, and the rules in other periods were basically the same.

[0076] like Figure 3 As shown in the figure, according to the chlorophyll measurement results of each treatment field in the middle and late stages of grain filling, functional organic fertilizers replacing chemical fertilizers in different proportions combined with tillage can delay the senescence of wheat leaves in the late stage. Under the same tillage method, such as organic fertilizer replacing nitrogen fertilizer under rotary tillage conditions, the SPAD value of flag leaves can be increased by 3.3-6.75%, and organic fertilizer replacing nitrogen fertilizer under tillage conditions can increase the SPAD value of flag leaves by 4.62-6.94%, which effectively prolongs the functional period of leaves, thereby promoting grain filling, increasing grain weight, and improving yield.

[0077] like Figure 4 As shown, from the perspective of yield, under the same tillage method, the application of functional organic fertilizer can increase the yield. Compared with traditional rotary tillage + traditional fertilization, tillage and organic fertilizer can increase wheat yield, with an increase of 3.03-7.59%. For example, the T7 treatment of tillage + 20% organic fertilizer replacing nitrogen fertilizer increased the yield by 7.59% compared with T1. Regardless of economic and social benefits, this model is environmentally friendly and economically feasible. Organic fertilizer improvement of soil and crop growth is a continuous process. Through reasonable tillage and the input of functional organic fertilizer, the crop growth environment can be improved and the sustainable productivity of land can be increased.

[0078] The functional organic fertilizer for Shajiang black soil provided in this embodiment not only has an improvement effect on the soil tillage layer without adverse effects, but also promotes the emergence and growth of wheat. In addition, the functional organic fertilizer for Shajiang black soil provided in this embodiment adopts appropriate tillage methods, which can improve the tillage layer structure, reduce soil bulk density, and improve the suitability of Shajiang black soil. It can also increase the chlorophyll content of wheat, and promote the coordinated and synchronous growth of the aboveground and underground parts of wheat, promote the root system's absorption of soil nutrients and water, increase the wheat field population, and increase the accumulation of dry matter, thereby achieving a simultaneous increase in wheat yield and quality.

[0079] The healthy development of soil is the basis of food security. The functional organic fertilizer of the present invention is prepared through scientific and reasonable screening, and is verified by physical characteristic analysis and many years of field tests. The fertilizer has good safety and stability, low production and application cost, outstanding yield-increasing benefits, simple use method, and is easy to promote.

[0080] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A functional organic fertilizer for sand ginger black soil, characterized in that: Based on the total mass of the organic fertilizer, the organic fertilizer includes raw materials in the following proportions: 70-75% of decomposed livestock and poultry manure, 10-15% of decomposed straw, 10% of plant ash, and 5% of peat soil.

2. The functional organic fertilizer for sandy black soil according to claim 1, characterized in that, The decomposed livestock and poultry manure includes one or more of decomposed chicken manure, decomposed cow manure, and decomposed sheep manure.

3. A method for preparing functional organic fertilizer for sand ginger black soil, characterized in that: The following steps are involved: Step 1, fully mixing fresh livestock and poultry manure with enzyme preparations and microbial preparations for fermentation; the fresh livestock and poultry manure includes one or more of fresh chicken manure, fresh cow manure, and fresh sheep manure; Step 2: Mix the straw and the microbial agent for fermentation, and the ratio of the microbial agent to the straw is 1:5000; Step three, fully and evenly mix the decomposed livestock and poultry manure, decomposed straw, wood ash and peat soil, wherein the mixing ratio of the decomposed livestock and poultry manure, decomposed straw, wood ash and peat soil is: 70-75% of decomposed chicken manure, 10-15% of decomposed straw, 10% of wood ash and 5% of peat soil.

4. The method for preparing functional organic fertilizer for sand ginger black soil according to claim 3, characterized in that, The fermentation time in step 1 and step 2 is the same, and the fermentation time is adjusted according to the fermentation season, 15 days in spring and autumn, 11-12 days in summer, and 20 days in winter.

5. The method for preparing functional organic fertilizer for sand ginger black soil according to claim 3, characterized in that, In the step 2, the straw is crushed and mixed with the microbial agent.

6. The method for preparing functional organic fertilizer for sand ginger black soil according to claim 3, characterized in that, The method further comprises a step 4 of sieving the mixed raw materials.

7. Application of functional organic fertilizer for sand ginger black soil.

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