Soil improvement method for sugarcane seedling seedbed

Abstract

The invention provides a soil improvement method for a sugarcane seedling seedbed. The soil improvement method comprises the following steps that a small-particle-size water-retaining agent containing a water-absorbing component and a biodegradable natural fiber material is spread on the surface layer of soil, and a large-particle-size water-retaining agent containing a water-absorbing component and a biodegradable natural fiber material is spread in a root zone. The water-retaining agents with different particle sizes and mixed with biodegradable natural fibers are spread in a layered manner, so that fine regulation and control can be performed according to the water requirements of different depths of the seedbed. The small-particle-size water-retaining agent is distributed on the surface layer, can rapidly absorb rainfall or irrigation water, reduces surface water evaporation, effectively inhibits weed growth, and meanwhile is not prone to being washed away by rainwater due to the small particle size. The large-particle-size water-retaining agent is concentrated in the root zone, has higher water-retaining capacity, can continuously provide stable water for the root system, and avoids wilting of the root zone due to water shortage. The biodegradable natural fibers are mixed, so that the water-retaining agent is expanded to form a porous structure, and root respiration and healthy growth are promoted.

Description

Technical Field

[0001] This application relates to the field of agricultural soil improvement, specifically to a soil improvement method for sugarcane seedling beds. Background Technology

[0002] In the current process of cultivating and transplanting sugarcane seedlings, soil moisture management has always been a key factor affecting seedling survival rate and growth quality. Traditional water retention measures mostly rely on conventional water-retaining agents or simple mulches, which are difficult to balance the moisture regulation and aeration needs of different soil layers.

[0003] In actual production, single-particle-size water-retaining agents often face the problem of balancing water absorption rate and water retention capacity. Surface moisture is easily lost through evaporation, while uneven water supply in the root zone can occur, affecting root health. At the same time, the expansion of the water-retaining agent may clog soil pores, leading to poor aeration and increasing the risk of anaerobic conditions in the root zone.

[0004] Therefore, how to achieve precise water control at different depths in the seedbed, improve soil aeration, and promote healthy root growth has become a major technical challenge in the cultivation of sugarcane seedlings. Summary of the Invention

[0005] To address the issues of moisture regulation and aeration balance in sugarcane seedling beds, this application provides a soil improvement method for sugarcane seedling beds.

[0006] The first aspect of this application provides a soil improvement method for sugarcane seedling beds, comprising the following steps: applying a small-particle water-retaining agent containing water-absorbing components and biodegradable natural fiber materials to the soil surface layer, and applying a large-particle water-retaining agent containing water-absorbing components and biodegradable natural fiber materials to the root zone.

[0007] By applying water-retaining agents of different particle sizes and blended with biodegradable natural fibers in a layered manner, the water requirements at different depths of the seedbed can be precisely controlled. Small-particle-size water-retaining agents, distributed on the surface, can quickly absorb rainfall or irrigation water, reducing surface water evaporation and effectively suppressing weed growth. Furthermore, due to their small particle size, they are not easily washed away by rainwater. Large-particle-size water-retaining agents are concentrated in the root zone, possessing stronger water-holding capacity and continuously providing stable moisture to the roots, preventing wilting due to water shortage. The blending with biodegradable natural fibers causes the water-retaining agent to expand, forming a porous structure that prevents blockage of large soil pores, significantly improving seedbed aeration, reducing the risk of anaerobic conditions in the root zone, and promoting root respiration and healthy growth. In addition, natural fibers themselves have good biodegradability and microecological promoting effects, further improving soil structure and the rhizosphere microenvironment. This method, combined with scientific fertilizer and water management measures, can significantly improve the survival rate of sugarcane seedlings, reduce production costs, and contribute to the sustainable development of the soil ecosystem.

[0008] Furthermore, the small-particle-size water-retaining agent has a particle size of 0.1-2 mm, and the large-particle-size water-retaining agent has a particle size of 0.5-10 mm. By optimizing the particle size distribution of the water-retaining agent, the moisture regulation needs of different soil layers can be better matched, improving the overall balance of water retention and supply.

[0009] Furthermore, the biodegradable natural fiber material is one or more of coconut shell fiber, hemp fiber, and straw fiber. Using a variety of natural fiber materials can balance multiple functions such as degradation rate, microecological promotion, and physical support, further improving soil structure and the rhizosphere environment.

[0010] Furthermore, the biodegradable natural fiber material has a mass fraction of 1-30% in the water-retaining agent. By controlling the fiber blending ratio, air permeability and biodegradability can be enhanced while ensuring the strength and structural stability of the water-retaining agent.

[0011] Furthermore, the water-absorbing component is a superabsorbent resin, a starch-based material, or a mixture thereof. Different types of water-absorbing components can meet the needs of different soils and crops, thereby improving the applicability and water absorption performance of the water-retaining agent.

[0012] Furthermore, the mass ratio of the small-particle-size water-retaining agent to the large-particle-size water-retaining agent is 1:9 to 9:1. By adjusting the ratio of the two types of water-retaining agents, the water supply pattern can be flexibly adjusted according to different soil types and crop growth stages.

[0013] Furthermore, the mass ratio of the small-particle-size water-retaining agent to the large-particle-size water-retaining agent is 7:3. This ratio achieves an optimal balance between rapid surface water absorption and continuous root zone water supply in practical applications, improving the overall water management effect of the seedbed.

[0014] Furthermore, the total application rate of the water-retaining agent is 0.5-5 kg / mu. A reasonable application rate can meet the crop's growth needs while controlling input costs and avoiding resource waste.

[0015] Furthermore, the method also includes applying organic fertilizer and compound fertilizer to the seedbed. The combined use of organic fertilizer and compound fertilizer can provide sufficient nutrients for the sugarcane seedlings, further promoting robust seedling growth.

[0016] Furthermore, the mass ratio of organic fertilizer to compound fertilizer is 5:1 to 20:1. By optimizing the ratio of organic fertilizer to compound fertilizer, it is possible to balance the improvement of soil organic matter and the supply of readily available nutrients, thereby promoting root development and soil microecological balance. Detailed Implementation

[0017] To facilitate understanding of this application, a more complete description will be provided below. This application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of this application, "several" means at least one, such as one, two, etc., unless otherwise explicitly specified.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] In this application, the technical features described in an open-ended manner include both closed technical solutions consisting of the listed features and open technical solutions that include the listed features.

[0021] In this application, numerical ranges are referred to as continuous unless otherwise specified, and include the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to integers, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be merged. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are incorporated.

[0022] Unless otherwise specified, the percentage content mentioned in this application refers to mass percentage for solid-liquid mixtures and solid-phase-solid mixtures, and volume percentage for liquid-phase-liquid mixtures.

[0023] Unless otherwise specified, all percentage concentrations mentioned in this application refer to the final concentration. The final concentration refers to the proportion of the added component in the system after the addition of that component.

[0024] Unless otherwise specified, the temperature parameters in this application may be either constant temperature processing or processing within a certain temperature range. The constant temperature processing allows for temperature fluctuations within the precision range controlled by the instrument.

[0025] The term "particle" as used in this application, or a substance with a defined particle size distribution, is not necessarily spherical in shape; it may be irregular and can be either primary or secondary particles. The particle size of irregular particles is calculated as the average of their maximum and minimum diameters.

[0026] Example 1: Soil improvement method for sugarcane seedling beds

[0027] Materials and quantities used:

[0028] Small particle size composite water-retaining agent (particle size 0.2-0.5mm, blended with coconut shell fiber, fiber content 15wt%, water-absorbing component is a compound of super absorbent resin and starch-based material, mass ratio 7:3), dosage 0.45kg / mu;

[0029] Large particle size composite water-retaining agent (particle size 1-2mm, blended with coconut shell fiber, fiber content 15wt%, water-absorbing components as above), dosage 1.05kg / mu;

[0030] Apply 15 kg / mu of organic fertilizer and 10 kg / mu of compound fertilizer, with a mixing ratio of 10:1.

[0031] Field processing steps:

[0032] Apply large-particle-size composite water-retaining agent evenly to the bottom of the seedbed trench and mix it with some backfill soil;

[0033] When backfilling to the surface layer, evenly spread small-particle-size composite water-retaining agent and mix it with the surface soil;

[0034] After mixing organic fertilizer and compound fertilizer, spread them evenly on the surface of the seedbed;

[0035] Transplant sugarcane seedlings, water them to help them establish roots, cover them with weed control fabric and compact it.

[0036] Subsequent management will proceed as usual.

[0037] Example 2:

[0038] Only the surface layer is covered with a small-particle composite water-retaining agent (0.5 mm particle size, mixed with coconut shell fiber, fiber content 10 wt%, water-absorbing component is superabsorbent resin), and no large-particle water-retaining agent is applied to the root zone. The rest is the same as in Example 1.

[0039] Example 3:

[0040] A small-particle-size composite water-retaining agent (0.5 mm) is applied to the surface, and a large-particle-size composite water-retaining agent (2 mm) is applied to the root zone. Neither of these agents is mixed with natural fibers. The rest of the process is the same as in Example 1.

[0041] Example 4:

[0042] The small-particle-size water-retaining agent has a particle size of 1 mm, the large-particle-size water-retaining agent has a particle size of 5 mm, it is blended with hemp fiber with a fiber content of 20 wt%, the water-absorbing component is superabsorbent resin, the total application rate of water-retaining agent is 2 kg / mu, and the rest is the same as in Example 1.

[0043] Example 5:

[0044] The small-particle water-retaining agent has a particle size of 0.2 mm, the large-particle water-retaining agent has a particle size of 1 mm, and it is mixed with straw fiber with a fiber content of 10 wt%. The water-absorbing component is starch-based material. The total application rate of the water-retaining agent is 1 kg / mu. The rest is the same as in Example 1.

[0045] Example 6:

[0046] The small-particle-size water-retaining agent has a particle size of 0.5 mm, the large-particle-size water-retaining agent has a particle size of 2 mm, and it is blended with coconut shell fiber and hemp fiber (each accounting for 50% of the total fiber content). The fiber content is 30 wt%, the water-absorbing component is super absorbent resin, and the total application rate of water-retaining agent is 3 kg / mu. The rest is the same as in Example 1.

[0047] Comparative Example 1: Excludes layered application and natural fibers

[0048] Using only a single-particle-size (0.5 mm) superabsorbent resin water-retaining agent, without natural fibers, it was applied to the surface and root zone and mixed evenly, and the rest was the same as in Example 1.

[0049] Comparative Example 2: No water-retaining agent used

[0050] Only organic fertilizer, compound fertilizer and conventional field management were applied, and the rest was the same as in Example 1.

[0051] Comparative Example 3: No natural fibers were mixed in

[0052] The surface layer was coated with a small-particle-size (0.5 mm) superabsorbent resin water-retaining agent, and the root zone was coated with a large-particle-size (2 mm) superabsorbent resin water-retaining agent. No natural fibers were mixed in either application. The rest was the same as in Example 1.

[0053] Performance Testing Methodology Description

[0054] All examples and comparative examples were conducted in the same field under the same management conditions. The test indicators included: seedling survival rate (%), soil moisture content (%), and root zone aeration (mg / L, soil oxygen content).

[0055] Table 1. Test results of Examples 1-6 and Comparative Examples 1-3.

[0056] Group Seedling survival rate (%) Soil moisture content (%) Root zone ventilation (mg / L) Example 1 98 22 6.8 Example 2 93 20 6.2 Example 3 90 19 5.5 Example 4 97 21 6.5 Example 5 94 20 6.3 Example 6 96 21 6.7 Comparative Example 1 82 17 4.1 Comparative Example 2 75 15 3.8 Comparative Example 3 86 18 4.7

[0057] Examples 1-6 all exhibited higher seedling survival rates, soil moisture content, and root zone aeration, significantly superior to the comparative example. This is because the layered application of water-retaining agents with different particle sizes and blended with biodegradable natural fibers allows for precise control of moisture requirements at different depths of the seedbed. Small-particle-size water-retaining agents, distributed on the surface, can quickly absorb rainfall or irrigation water, reducing surface water evaporation and effectively inhibiting weed growth. Furthermore, due to their smaller particle size, they are less easily washed away by rainwater. Large-particle-size water-retaining agents, concentrated in the root zone, possess stronger water-holding capacity, continuously providing stable moisture to the roots and preventing wilting due to water shortage. The blending with biodegradable natural fibers causes the water-retaining agent to expand, forming a porous structure that prevents blockage of large soil pores, significantly improving seedbed aeration, reducing the risk of anaerobic conditions in the root zone, and promoting root respiration and healthy growth. In addition, the natural fibers themselves possess good biodegradability and microecological promoting effects, further improving soil structure and the rhizosphere microenvironment. This method, combined with scientific fertilizer and water management, can significantly improve the survival rate of sugarcane seedlings, reduce production costs, and contribute to the sustainable development of the soil ecosystem. Example 1 showed the best overall performance, with a seedling survival rate as high as 98% and root zone aeration reaching 6.8 mg / L, indicating that this approach has significant advantages in practical applications.

[0058] Comparative Example 1, lacking stratified application and natural fibers, resulted in insufficient water control and aeration, significantly reducing seedling survival rate and root zone aeration. Comparative Example 2, without water-retaining agents, exhibited the lowest soil moisture content and seedling survival rate. Comparative Example 3, without natural fibers, while showing some water retention, had lower aeration than the examples, indicating that the addition of natural fibers plays a crucial role in improving soil structure and the root zone environment.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method for soil improvement for sugarcane seedling nursery bed, characterized by, The method comprises the following steps: spreading a water-retaining agent containing a water-absorbing component and a biodegradable natural fiber material with a small particle size on the surface of the soil, and spreading a water-retaining agent containing a water-absorbing component and a biodegradable natural fiber material with a large particle size on the root zone.

2. The method of claim 1, wherein, The particle size of the small particle size water-retaining agent is 0.1-2mm, and the particle size of the large particle size water-retaining agent is 0.5-10mm.

3. The method of claim 1, wherein, The biodegradable natural fiber material is one or more of coconut shell fiber, hemp fiber, and straw fiber.

4. The method of claim 1, wherein, The mass fraction of the biodegradable natural fiber material in the water-retaining agent is 1-30%.

5. The method of claim 1, wherein, The water-absorbing component is a superabsorbent resin, a starch-based material, or a mixture thereof.

6. The method of claim 1, wherein, The mass ratio of the small particle size water-retaining agent to the large particle size water-retaining agent is 1:9 to 9:

1.

7. The method of claim 1, wherein, The mass ratio of the small particle size water-retaining agent to the large particle size water-retaining agent is 7:

3.

8. The method of claim 1, wherein, The total application amount of the water-retaining agent is 0.5-5kg / mu.

9. The method of claim 1, wherein, An organic fertilizer and a compound fertilizer are also applied in the seedbed.

10. The method of claim 9, wherein, The mass ratio of the organic fertilizer to the compound fertilizer is 5:1 to 20:1.