A method for improving the quality of dry clay soil farmland based on cattle and sheep manure resources

Abstract

The invention discloses a method for improving the quality of dry clay soil arable land based on cattle and sheep manure resources, and relates to the technical field of soil improvement. The method comprises the following steps: uniformly applying the biochar-humic acid mixed powder prepared from cattle and sheep manure resources and organic fertilizer particles to the clay soil. The method of the invention has a good improvement effect on clay soil, improves soil fertility, promotes crop production, strengthens soil self-repairing ability, and improves the quality of arable land.

Description

Technical Field

[0001] The present invention relates to the technical field of soil improvement, and in particular to a method for improving the quality of dryland clay soil based on cattle and sheep manure resources. Background Art

[0002] In recent years, with the vigorous development of animal husbandry, the scale of cattle and sheep breeding has increased dramatically, and the amount of livestock and poultry manure produced each year has also increased. At present, the main ways to deal with livestock and poultry manure are: processing into organic fertilizer, directly returning to the field and landfilling.

[0003] How to deal with and utilize these waste resources, turning waste into treasure and solving the resettlement problem is the primary problem affecting green, safe and sustainable livestock farming. Dealing with and utilizing these huge waste resources is a problem that urgently needs to be solved.

[0005] Using cattle and sheep manure resources to improve the quality of cultivated land is an effective way. On the one hand, it improves the quality of cultivated land, which is of particular significance for solving food security; on the other hand, it solves the disposal problem of tens of millions of tons of cattle and sheep manure every year, reduces its land occupation and secondary pollution, "turns waste into treasure", and realizes a true circular economy. Based on this, it is very meaningful to develop a method that can simultaneously solve the problems of cultivated land quality and cattle and sheep manure disposal. Summary of the invention

[0006] In view of the above problems, the present invention provides a method for improving the quality of dry clay soil arable land based on cattle and sheep manure resources, which solves the problems of farmland quality and the disposal of tens of millions of cattle and sheep manure in my country. The present invention uses cattle and sheep manure resources to obtain biochar and organic fertilizer, then adds humic acid, phosphate urine and urea, and applies them to dry clay soil, which can improve clay soil, improve soil fertility, promote the growth of crops and strengthen soil self-repair.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows: The present invention provides a method for improving the quality of dryland clay soil based on cattle and sheep manure resources. The method comprises: evenly applying biochar-humic acid mixed powder prepared from cattle and sheep manure resources and organic fertilizer particles into the dryland clay soil.

[0008] Furthermore, the preparation method of the biochar-humic acid mixed powder is: burning dried cattle and sheep manure under anaerobic conditions, cooling naturally after completion to obtain biochar; grinding and sieving the biochar, adding humic acid, and mixing evenly to obtain the biochar-humic acid mixed powder.

[0009] Furthermore, the preparation method of the organic fertilizer granules is: take cattle and sheep manure, add an organic material composting agent and stir to fully mix it to form a pile, control the fermentation temperature, turn it over once every 3-5 days until it is fully fermented and decomposed, and obtain organic fertilizer; then, add urea phosphate and urea to the organic fertilizer, mix and stir evenly at room temperature, and then extrude and granulate to obtain organic fertilizer granules.

[0010] Furthermore, the application amount of the biochar-humic acid mixed powder is 150 kg / mu, and the application time is 1-2 days before sowing crops.

[0011] Furthermore, the application amount of the organic fertilizer particles is 800 kg / mu, and the application time is after the previous crop is harvested.

[0012] Furthermore, in the preparation of the biochar-humic acid mixed powder, the water content of the dried cattle and sheep manure is ≤5%; the combustion temperature is 300-600°C, and the combustion time is 6-8h.

[0013] Furthermore, the mass ratio of the biochar to humic acid is 5:1; and the particle size of the biochar-humic acid mixed powder is ≤10 mesh.

[0014] Furthermore, in the preparation of the organic fertilizer particles, the moisture content of cattle and sheep manure is 40%; the mass ratio of cattle and sheep manure to organic material composting agent is 2400:1; and the fermentation temperature is 40-60°C.

[0015] Furthermore, the mass ratio of the organic fertilizer, urea phosphate and urea is 12:1:6; and the particle size of the organic fertilizer particles is 1-2 cm.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by utilizing cattle and sheep manure resources and adding humic acid and chemical fertilizers, the dry clay soil has a good improvement effect, improves soil fertility, promotes crop production, strengthens soil self-repairing ability, and improves the quality of cultivated land. At the same time, it can avoid the pollution of the environment by the stacking of manure resources, and realize a win-win solution that is in line with the development of circular economy and protects the environment. DETAILED DESCRIPTION

[0017] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] The instruments, reagents, materials, etc. involved in the following examples, unless otherwise specified, are all conventional instruments, reagents, materials, etc. in the prior art and can be obtained through regular commercial channels. The experimental methods, detection methods, etc. involved in the following examples, unless otherwise specified, are all conventional experimental methods, detection methods, etc. in the prior art.

[0019] In this embodiment, the organic material decomposing agent is the Senbowan organic material decomposing agent (effective live bacteria count ≥ 50 million / g) produced by Weifang Yihao Biotechnology Co., Ltd.

[0020] Example 1 Preparation of biochar-humic acid mixed powder: put dried cattle and sheep manure (water content ≤ 5%) into 110m 3 The mixture was compacted in a biochar combustion device and burned at 300 °C for 6 hours under anaerobic conditions. After the combustion was completed, the mixture was naturally cooled to obtain biochar. 100 kg of biochar was ground and sieved, and 20 kg of humic acid (the mass ratio of biochar to humic acid was 5:1) was added. The mixture was mixed evenly to obtain a biochar-humic acid mixed powder (particle size ≤ 10 mesh).

[0021] Preparation of organic fertilizer granules: Take cattle and sheep manure (water content is 40%), add organic material composting agent (the mass ratio of cattle and sheep manure to organic material composting agent is 2400:1) and stir to fully mix it to form a pile, control the fermentation temperature at 40°C, turn it over once every 3 days until it is fully fermented and decomposed to obtain organic fertilizer; then, add 100kg of urea phosphate and 600kg of urea (the mass ratio of organic fertilizer, urea phosphate and urea is 12:1:6) to 1200kg of organic fertilizer, mix and stir evenly at room temperature, and then extrude and granulate to obtain organic fertilizer granules (particle size is 1cm).

[0022] Example 2 Preparation of biochar-humic acid mixed powder: put dried cattle and sheep manure (water content ≤ 5%) into 110m 3 The mixture was compacted in a biochar combustion device and burned at 450 °C under anaerobic conditions for 7 hours. After the combustion was completed, the mixture was naturally cooled to obtain biochar. 100 kg of biochar was ground and sieved, and 20 kg of humic acid (the mass ratio of biochar to humic acid was 5:1) was added. The mixture was mixed evenly to obtain a biochar-humic acid mixed powder (particle size ≤ 10 mesh).

[0023] Preparation of organic fertilizer granules: Take cattle and sheep manure (water content of 40%), add organic material composting agent (the mass ratio of cattle and sheep manure to organic material composting agent is 2400:1) and stir to fully mix it to form a pile, control the fermentation temperature at 50°C, turn it over once every 4 days until it is fully fermented and mature, and obtain organic fertilizer; then, add 100kg of urea phosphate and 600kg of urea (the mass ratio of organic fertilizer, urea phosphate and urea is 12:1:6) to 1200kg of organic fertilizer, mix and stir evenly at room temperature, and then extrude and granulate to obtain organic fertilizer granules (particle size is 1.5cm).

[0024] Experimental Example 3 Preparation of biochar-humic acid mixed powder: put dried cattle and sheep manure (water content ≤ 5%) into 110m 3 The mixture was compacted in a biochar combustion device and burned at 600 °C under anaerobic conditions for 8 h. After burning, it was naturally cooled to obtain biochar. 100 kg of biochar was ground and sieved, and 20 kg of humic acid (the mass ratio of biochar to humic acid was 5:1) was added. The mixture was mixed evenly to obtain a biochar-humic acid mixed powder (particle size ≤ 10 mesh).

[0025] Preparation of organic fertilizer granules: Take cattle and sheep manure (water content of 40%), add organic material composting agent (the mass ratio of cattle and sheep manure to organic material composting agent is 2400:1) and stir to fully mix it to form a pile, control the fermentation temperature at 60°C, turn it over once every 5 days until it is fully fermented and decomposed to obtain organic fertilizer; then, add 100kg of urea phosphate and 600kg of urea (the mass ratio of organic fertilizer, urea phosphate and urea is 12:1:6) to 1200kg of organic fertilizer, mix and stir evenly at room temperature, and then extrude and granulate to obtain organic fertilizer granules (particle size is 2cm).

[0026] Experimental Example 1 The biochar-humic acid mixed powder prepared in the above Examples 1-3 and the organic fertilizer particles were used to carry out field experiments on corn crops. The experimental process is as follows: 1. The experiment set up four treatments: Example 1 group: The biochar-humic acid mixed powder (150 kg / mu) and organic fertilizer granules (800 kg / mu) of Example 1 were applied simultaneously; Example 2 group: The biochar-humic acid mixed powder (150 kg / mu) and organic fertilizer granules (800 kg / mu) of Example 2 were applied simultaneously; Example 3 group: The biochar-humic acid mixed powder (150 kg / mu) and organic fertilizer granules (800 kg / mu) of Example 3 were applied simultaneously; Control group 1: only the biochar-humic acid mixed powder of Example 2 (150 kg / mu) was applied; Control group 2: only the organic fertilizer granules of Example 2 (800 kg / mu) were applied; Blank control group (CK): no substance was administered.

[0027] 2. The soil of the experimental field is brown clay, and the soil bulk density before the field experiment = 1.48g / cm 3 , pH=8.50, organic matter=10g / kg.

[0028] 3. The crop planted in the experiment is corn, and the variety is Wu Gu 737. After the previous crop is harvested, the organic fertilizer particles are evenly spread on the dry clay soil farmland, and the field is plowed to a depth of 0-30cm. 1-2 days before corn sowing, the biochar-humic acid mixed powder is evenly spread on the field, and the field is rotary tilled to 0-10cm. Sowing is carried out on April 15, 2024, and field management is consistent with routine. Harvest is on October 3, 2024, and field yield measurement and soil sample collection are carried out on October 2, 2024.

[0029] 4. The results of soil bulk density, organic matter and pH in the field at 1-20 cm after the experiment are shown in Table 1.

[0030] Table 1 Effects of application of methods for improving the quality of dry clay soil based on cattle and sheep manure resources

[0031] As can be seen from Table 1, according to the method for improving the quality of dryland clay soil based on cattle and sheep manure resources proposed in this embodiment, the simultaneous application of biochar-humic acid mixed powder and organic fertilizer granules prepared from cattle and sheep manure resources can significantly reduce soil bulk density and increase soil organic matter compared with separate application and blank.

[0032] 5. The corn yield results after the experiment are shown in Table 2.

[0033] Table 2 Corn yield of dryland clay soil quality improvement and improvement methods based on cattle and sheep manure resources

[0034] As can be seen from Table 2, according to the method for improving the quality of dryland clay soil based on cattle and sheep manure resources proposed in this embodiment, the simultaneous application of biochar-humic acid mixed powder and organic fertilizer granules prepared from cattle and sheep manure resources can significantly increase corn yield compared with separate application and blank.

[0035] The method of this embodiment utilizes cattle and sheep manure resources, adds humic acid and fertilizers (urea phosphate, urea), has a good improvement effect on clay soil, improves soil fertility, promotes crop production, strengthens soil self-repairing ability, and improves the quality of cultivated land. At the same time, it can avoid the pollution of cattle and sheep manure to the environment, and realize a win-win solution that is in line with the development of circular economy and protects the environment.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for improving the quality of dryland clay soil based on cattle and sheep manure resources, characterized by: The method comprises the following steps: the biochar-humic acid mixed powder prepared from cattle and sheep manure resources and organic fertilizer particles are evenly applied to dryland clay soil.

2. The method for improving the quality of dryland clay soil based on cattle and sheep manure resources according to claim 1 is characterized by: The preparation method of the biochar-humic acid mixed powder is as follows: sun-dried cattle and sheep manure is burned under anaerobic conditions, and then naturally cooled to obtain biochar; the biochar is ground and sieved, humic acid is added, and the mixture is evenly mixed to obtain the biochar-humic acid mixed powder.

3. The method for improving the quality of dry clay soil farmland based on cattle and sheep manure resources according to claim 1, characterized in that: The preparation method of the organic fertilizer granules comprises the following steps: taking cattle and sheep manure, adding an organic material composting agent and stirring to fully mix the manure to form a pile, controlling the fermentation temperature, and turning the manure over once every 3-5 days until the manure is fully fermented and decomposed to obtain organic fertilizer; then, adding urea phosphate and urea to the organic fertilizer, mixing and stirring the manure at room temperature, and then extruding and granulating the manure to obtain the organic fertilizer granules.

4. The method for improving the quality of dry clay soil farmland based on cattle and sheep manure resources according to claim 1, characterized in that: The application amount of the biochar-humic acid mixed powder is 150 kg / mu, and the application time is 1-2 days before sowing crops.

5. The method for improving the quality of dryland clay soil based on cattle and sheep manure resources according to claim 1 is characterized by: The application amount of the organic fertilizer particles is 800 kg / mu, and the application time is after the previous crop is harvested.

6. The method for improving the quality of dry clay soil farmland based on cattle and sheep manure resources according to claim 2, characterized in that: In the preparation of the biochar-humic acid mixed powder, the water content of the dried cattle and sheep manure is ≤5%; the combustion temperature is 300-600° C., and the combustion time is 6-8 hours.

7. The method for improving the quality of dryland clay soil based on cattle and sheep manure resources according to claim 2, characterized in that: The mass ratio of the biochar to humic acid is 5:1; the particle size of the biochar-humic acid mixed powder is ≤10 mesh.

8. The method for improving the quality of dry clay soil farmland based on cattle and sheep manure resources according to claim 3, characterized in that: In the preparation of the organic fertilizer particles, the moisture content of cattle and sheep manure is 40%; the mass ratio of cattle and sheep manure to organic material composting agent is 2400:1; and the fermentation temperature is 40-60°C.

9. The method for improving the quality of dry clay soil farmland based on cattle and sheep manure resources according to claim 3, characterized in that: The mass ratio of the organic fertilizer, urea phosphate and urea is 12:1:6; and the particle size of the organic fertilizer particles is 1-2 cm.

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