A fertilizing device and fertilizing method for reducing greenhouse gas emissions

Abstract

The present invention relates to the technical field of rice planting, and particularly relates to a fertilization device and a fertilization method for reducing greenhouse gas emissions, including a pipeline. One end of the pipeline is open, the other end of the pipeline is blocked, and a plurality of outlets are provided on the side wall of the pipeline. The pipeline is used to be inserted into the paddy field soil to form a channel, and fertilizers can be added into the pipeline and seep into the soil of the paddy field from the outlets. In this application, by using this fertilization device for fertilization, it is beneficial to the concentrated nutrient absorption of rice roots, which is conducive to improving the absorption and utilization rate of fertilizers by rice roots. When applying nitrogen fertilizers, it can reduce the nitrogen fertilizer residues in the soil, improve the absorption rate of rice nitrogen fertilizers, and then reduce the substrates for generating N20, thereby reducing the emission of N20. While this device is beneficial to the growth of rice roots, it can also improve the air permeability of the soil near the channel, thereby avoiding the formation of an extremely anaerobic environment in the soil and destroying the environmental conditions suitable for the growth of methanogens, thus reducing the emission of CH4.

Description

Technical Field

[0001] The invention relates to the technical field of rice planting, and in particular to a fertilization device and a fertilization method for reducing greenhouse gas emissions. Background Art

[0002] Rice is one of the most important food crops in my country and also a major food crop in the world. With the improvement of production level, people gradually found that farming methods are an important factor affecting the fertility of rice field soil and the absorption and utilization of nutrients by plants. Different farming methods will greatly affect the absorption of nutrients by rice. In the process of rice cultivation, rice needs to be fertilized. At the same time, in the rice ecosystem, nitrogen is an important limiting macroelement in rice production and a huge driving force for humans to increase production.

[0003] Applying fertilizer to increase rice yield is an important means in the rice planting process. However, in the actual fertilization process, the inventors found that the current fertilization method still has shortcomings:

[0004] At present, when applying fertilizer, usually base fertilizer is applied first, and topdressing is applied during the growth of rice. When applying base fertilizer, usually fertilizer is spread in the paddy field, and then harrowing is performed, so that the fertilizer and paddy field soil are mixed more evenly. At the same time, in the topdressing stage, when fertilizing the rice roots, usually fertilizer is spread on the surface of the paddy field, so that the fertilizer gradually penetrates into the soil and is absorbed by the rice root system. When rice grows, it is difficult for rice to absorb fertilizer in various parts of the paddy field, such as fertilizer in the soil between adjacent rice plants. When rice absorbs nutrients, the rice root system plays a major role in absorbing nutrients. Nutrients in the soil far away from the rice root system are not conducive to the absorption of nutrients by the rice root system, which is not conducive to the absorption and utilization rate of fertilizer by rice. When nitrogen fertilizer is applied, it is easy to cause a large amount of nitrogen fertilizer to remain in the paddy field, which provides more substrates for the generation of greenhouse gas N2O. At the same time, the traditional flooding and irrigation planting method causes a large amount of methane bacteria to accumulate in the rice fields, increasing the emission of CH4 in the rice fields, which in turn causes the rice fields to emit more greenhouse gases.

[0005] Therefore, based on the above problems, there is an urgent need to design a fertilization device and a fertilization method for reducing greenhouse gas emissions, so as to reduce greenhouse gas emissions from rice fields. Summary of the invention

[0006] The purpose of the present invention is to provide a fertilization device and a fertilization method for reducing greenhouse gas emissions in order to reduce greenhouse gas emissions from rice fields in view of the above-mentioned shortcomings of the current fertilization methods used in rice planting.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0008] A fertilization device for reducing greenhouse gas emissions, comprising a pipeline, one end of the pipeline is open, the other end of the pipeline is blocked, and a plurality of outlets are provided on the side wall of the pipeline. The pipeline is used to be inserted into paddy field soil to form a channel, and fertilizer can be added into the pipeline and seep into the soil of the paddy field from the outlets.

[0009] As a preferred technical solution of the present application, the fertilization device comprises a plurality of such pipelines, and the plurality of pipelines form a pipeline group, and the plurality of pipelines on the pipeline group are connected into one body through connecting rods.

[0010] As a preferred technical solution of the present application, the outlet is a sieve-shaped through hole, and a plurality of annular protrusions are provided on the outer side of the pipeline. The protrusions are arranged around the central axis of the pipeline, and the protrusions are arranged along the length direction of the pipeline.

[0011] As a preferred technical solution of the present application, in the direction from the open end to the blocked end of the pipeline, the diameter of the pipeline gradually decreases.

[0012] As another preferred technical solution of the present application, the outlet is strip-shaped, the length direction of the outlet is the same as the length direction of the pipeline, the length of the outlet is adapted to the length of the pipeline, and the outlet is arranged along the circumferential direction of the pipeline.

[0013] As a preferred technical solution of the present application, a plurality of blades are further provided on the pipeline. The blades are adapted to the outlets. One end of the blade is connected to the pipeline. The blade can block the outlet. After the pipeline is inserted into the paddy field soil, the paddy field soil can push the blade so that the blade bends and deforms towards the central axis of the pipeline and the outlet is exposed. When the acting force on the blade is withdrawn, the blade can restore its deformation.

[0014] As a preferred technical solution of the present application, the part of the pipeline for connecting with the blade is close to the blocked end of the pipeline.

[0015] As a preferred technical solution of the present application, the pipeline and the blade are made of resin and a non-degradable material is selected, so as to facilitate the long-term repeated use of the pipeline and the blade. At the same time, it is convenient for the pipeline to maintain its original shape after being inserted into the soil and for the blade to bend and deform.

[0016] The present application also provides a fertilization method, comprising the following steps:

[0017] Step S1: Place the fertilization device, and insert the pipeline on the fertilization device as described above into the paddy field soil in the corresponding rice planting area;

[0018] Step S2: Applying fertilizers. The fertilizers are put into the pipeline from the opening of the pipeline, so that the fertilizers in the pipeline seep into the paddy field soil.

[0019] Step S3: Removing the device. After the paddy field soil absorbs the fertilizers, the pipeline is pulled out of the paddy field soil.

[0020] As a preferred technical solution of this application, in the step S3, after the pipeline is inserted into the paddy field soil for 1-2 weeks, the pipeline is then pulled out of the paddy field soil.

[0021] As a preferred technical solution of this application, the fertilization method involves four fertilization stages, namely the base fertilizer application stage, the tillering fertilizer application stage, the panicle fertilizer application stage, and the grain fertilizer application stage, and the fertilization stages are matched with the fertilization steps.

[0022] As a preferred technical solution of this application, in the step S2, after applying the fertilizers, water is injected into the pipeline, and the water surface is lower than the upper surface of the paddy field soil.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] In the solution of this application, the fertilization device includes a pipeline. One end of the pipeline is open, and the other end is blocked. A number of openings are provided on the side wall of the pipeline. When fertilizing the rice in the paddy field, the pipeline is first inserted into the paddy field soil to form a channel. Specifically, the blocked end of the pipeline is inserted into the soil, so that the pipeline squeezes the soil and forms a channel in the soil. At the same time, the position where the pipeline is inserted corresponds to the area where the rice is planted. After the pipeline is inserted into the paddy field, fertilizers are added into the pipeline. Specifically, the fertilizers can be added from the open end of the pipeline. Since the paddy field soil contains moisture, the moisture in the soil will seep into the pipeline. After the fertilizers are added to the pipeline, the fertilizers can dissolve in the water and then seep into the paddy field soil from the outlet. In this way, the soil near the pipeline contains higher fertilizer nutrients. During the growth of the rice, the rice roots are more likely to grow towards the soil with more fertilizer nutrients. Then, as the rice grows, the rice roots are more likely to spread in the soil near the pipeline. In this way, when fertilizing later, by fertilizing at the channel in the paddy field soil, the growth area of the rice roots corresponds to the diffusion area of the fertilizers in the soil, which is beneficial to the concentrated nutrient absorption of the rice roots, can improve the absorption utilization rate of the fertilizers by the rice roots. When applying nitrogen fertilizers, it can reduce the nitrogen fertilizer residues in the soil, improve the nitrogen fertilizer absorption rate of the rice, and then reduce the substrates for generating N2O, thereby reducing the emission of N2O.

[0025] In this application, by arranging a number of annular protrusions on the outer side of the pipeline, when the pipeline is inserted into the soil, the pipeline moves vertically downward and drives the protrusions to move vertically downward. The protrusions can squeeze the soil below them and reserve space for the outlet above the protrusions. After the fertilizer is added to the pipeline, when the fertilizer is mixed with the moisture in the soil, it is convenient for the fertilizer to flow from the opening to the reserved space near the opening. In this way, after the fertilizer is added to the pipeline, more soil can directly contact the fertilizer, thereby further increasing the speed and range of the fertilizer infiltrating into the soil near the pipeline. At the same time, the existence of the reserved space can increase the surface area of the soil in contact with the air, further increasing the oxygen content in the soil near the pipeline. During the fertilization process, the fertilizer is mainly applied to the soil near the pipeline. In this way, an extremely oxygen-deficient environment can be avoided in the soil near the pipeline, further inhibiting the generation of methanogens, and thus further reducing the CH4 emissions in the paddy field.

[0026] In another solution of this application, by arranging a number of blades on the pipeline, when the pipeline is inserted into the soil, the soil can squeeze and push the blades to make the blades bend and deform towards the central axis of the pipeline. During the bending and deformation process of the blades, the outlet corresponding to the blades can be gradually exposed, and the outlet can be gradually filled with soil. And during the process of inserting the pipeline into the soil, the blocked end of the pipeline squeezes the soil below the pipeline, so that during this process, the force of the soil on the blades is relatively small. Furthermore, during this process, the blades can block the outlet, thereby preventing the soil from blocking the pipeline from the outlet during the process of inserting the pipeline into the soil, and thus providing a guarantee for the subsequent fertilizer and air to enter the pipeline and act on the soil; at the same time, after the pipeline is inserted into the soil to a preset position, the force of the soil on the blades is increasing, and the force is F, so that under the action of the soil force, the blades gradually bend and deform towards the central axis of the pipeline, and the exposed outlet is gradually filled with soil. Then, when applying fertilizer subsequently, the fertilizer enters the pipeline, and the fertilizer directly acts on the soil that fills the outlet, which can increase the area of the soil directly contacted by the fertilizer in the pipeline, thereby increasing the speed and range of the fertilizer infiltrating into the soil near the side wall of the pipeline, facilitating the absorption of the fertilizer by the rice roots. Furthermore, when applying nitrogen fertilizer, the utilization rate of nitrogen fertilizer can be increased, and then the nitrogen fertilizer residue in the soil can be reduced, and thus the emissions of greenhouse gases can be reduced;

[0027] In the present application, the part of the pipeline for connecting with the blade is made close to the blocked end of the pipeline. In this way, when the soil squeezes the blade and makes the blade bend, under the action of the pipeline and the blade, the cross-sectional area of the upper region of the formed channel can be reduced, so that the formed channel has a long-bottle structure with a narrowed upper opening. After applying fertilizer, the fertilizer enters the channel and acts on the soil near the pipeline. During the process of the soil and the rice roots absorbing the fertilizer, the formed channel structure can reduce the volatilization of the fertilizer. And during the rainfall period after fertilization, when the pipeline is in the paddy field soil, the upper closing area of the channel can gradually shrink. At the same time, the upper closing area of the channel can play a blocking role and can block the precipitation. Therefore, during the rainfall after fertilization, the situation that the fertilizer in the channel flows out of the channel to the paddy field surface can be effectively reduced, thereby improving the utilization rate of the fertilizer. At the same time, the volatilization of the fertilizer on the paddy field surface can be reduced. When applying nitrogen fertilizer, the ammonia volatilization can be effectively reduced, thereby reducing the situation that the NH3 in the atmosphere reacts with acid after being oxidized to cause haze weather, and reducing the situation that NH3 settles and returns to the land and soil. Therefore, the emission of greenhouse gases can be reduced and the greenhouse effect can be mitigated. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 FIG. is a schematic structural diagram of one embodiment of a fertilizing device for reducing greenhouse gas emissions according to the present application;

[0029] Figure 2 FIG. is a schematic structural diagram of one embodiment of a fertilizing device for reducing greenhouse gas emissions according to the present application;

[0030] Figure 3 FIG. is a schematic structural diagram of a pipeline in one embodiment of a fertilizing device for reducing greenhouse gas emissions according to the present application;

[0031] Figure 4 FIG. is a schematic structural diagram of a pipeline in one embodiment of a fertilizing device for reducing greenhouse gas emissions according to the present application;

[0032] Figure 5 FIG. is a schematic cross-sectional structural diagram of a pipeline in one embodiment of a fertilizing device for reducing greenhouse gas emissions according to the present application;

[0033] Figure 6 FIG. is a schematic cross-sectional structural diagram of a pipeline in one embodiment of a fertilizing device for reducing greenhouse gas emissions according to the present application;

[0034] Figure 7 FIG. is a schematic flow diagram of one embodiment of a fertilizing method according to the present application;

[0035] Labels in the figure: 1 - pipe, 2 - outlet, 3 - channel, 4 - pipe group, 5 - connecting rod, 6 - protrusion, 7 - blade. Detailed implementation mode

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them.

[0037] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0038] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, terms such as "first" and "second" are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0041] Embodiment 1: Refer to the attached drawings of the specification Figure 1 and 2 as shown

[0042] A fertilizing device for reducing greenhouse gas emissions provided in this embodiment includes a pipe 1. One end of the pipe 1 is open, the other end of the pipe 1 is blocked, and a plurality of outlets 2 are provided on the side wall of the pipe 1. The pipe 1 is used to be inserted into the paddy field soil to form a channel 3, and fertilizer can be added into the pipe 1 and seep into the soil of the paddy field from the outlets 2.

[0043] In this application, the fertilization device includes a pipeline 1. One end of the pipeline 1 is open, and the other end is blocked. A number of outlet openings are provided on the side wall of the pipeline 1. When fertilizing rice in a paddy field, first insert the pipeline 1 into the paddy field soil to form a channel 3. Specifically, insert the blocked end of the pipeline 1 into the soil, so that the pipeline 1 squeezes the soil and forms a channel 3 in the soil. At the same time, the inserted position of the pipeline 1 corresponds to the rice planting area. After the pipeline 1 is inserted into the paddy field, add fertilizer into the pipeline 1. Specifically, the fertilizer can be added from the open end of the pipeline 1. Since the paddy field soil contains moisture, the moisture in the soil will seep into the pipeline 1. After the fertilizer is added to the pipeline 1, the fertilizer can dissolve in the water and then seep into the paddy field soil from the outlet 2. In this way, the soil near the pipeline 1 contains higher fertilizer nutrients. During the growth of rice, the rice roots are more likely to grow towards the soil with more fertilizer nutrients. Then, as the rice grows, the rice roots are more likely to spread throughout the soil near the pipeline 1. In this way, when fertilizing later, by fertilizing at the channel 3 in the paddy field soil, the growth area of the rice roots corresponds to the diffusion area of the fertilizer in the soil, which is beneficial to the concentrated nutrient absorption of the rice roots, can improve the absorption and utilization rate of the fertilizer by the rice roots. When applying nitrogen fertilizer, it can reduce the nitrogen fertilizer residue in the soil, increase the absorption rate of nitrogen fertilizer by the rice, and then reduce the substrate of N20 growth, thereby reducing the emission of N20;

[0044] And by using this fertilization device for fertilization, the pipeline 1 can be inserted into the soil for 1-2 weeks, so that the rice roots are more densely distributed around the pipeline 1. After the pipeline 1 is pulled out of the paddy field, there is no blockage of the pipeline 1 in the formed channel 3, providing more space for the growth of rice roots. At the same time, the rice roots growing at the channel 3 are beneficial to maintaining the shape of the channel 3 and can reduce the contraction rate of the channel 3. Among them, the contraction of the channel 3 is due to the softness of the soil in the paddy field. Without the support of the pipeline 1, the formed channel 3 will gradually contract. In this way, while being beneficial to the growth of rice roots, it can also improve the air permeability of the soil near the channel 3, avoid the formation of an extremely anaerobic environment in the soil, and then destroy the environmental conditions suitable for the growth of methanogens, thereby reducing the emission of CH4.

[0045] As a preferred embodiment, on the basis of the above method, further, the fertilization device includes a number of the pipelines 1, and a number of the pipelines 1 form a pipeline group 4, and a number of the pipelines 1 on the pipeline group 4 are connected into one body through a connecting rod 5.

[0046] In this way, the efficiency of using this fertilization device for fertilization is improved.

[0047] As the second embodiment: See Figure 3 as shown

[0048] On the basis of the technical solution of the first embodiment, further, the outlet 2 is a sieve-hole-shaped through hole, and a plurality of annular protrusions 6 are arranged on the outer side of the pipeline 1. The protrusions 6 are arranged around the central axis of the pipeline 1, and the protrusions 6 are arranged along the length direction of the pipeline 1.

[0049] Further, by arranging a plurality of annular protrusions 6 on the outer side of the pipeline 1, when the pipeline 1 is inserted into the soil, the pipeline 1 moves vertically downward and drives the protrusions 6 to move vertically downward, so that the protrusions 6 can squeeze the soil below them and reserve space for the outlet 2 above the protrusions 6. After the fertilizer is added to the pipeline 1, the fertilizer is mixed with the moisture in the soil, which facilitates the fertilizer to flow from the outlet 2 to the reserved space near the outlet 2. In this way, after the fertilizer is added to the pipeline 1, more soil can directly contact the fertilizer, which can further improve the speed and range of the fertilizer infiltrating into the soil near the pipeline 1. At the same time, the existence of the reserved space can increase the surface area of the soil in contact with the air, which can further increase the oxygen content in the soil near the pipeline 1. During the fertilization process, the fertilizer is mainly applied to the soil near the pipeline 1. In this way, an extremely oxygen-deficient environment can be avoided in the soil near the pipeline 1, further inhibiting the generation of methanogens, and thus further reducing the CH4 emissions in the paddy field.

[0050] As a preferred implementation manner, on the basis of the above manner, further, along the direction from the open end to the blocked end of the pipeline 1, the diameter of the pipeline 1 gradually decreases.

[0051] Along the direction from the open end to the blocked end of the pipeline 1, the diameter of the pipeline 1 gradually decreases. In this application, the open end is the end with an opening on the pipeline 1, and the blocked end is the end of the pipeline 1 that is blocked. In this way, the resistance when the pipeline 1 is inserted into the soil can be reduced, facilitating the insertion work of the pipeline 1.

[0052] Example three: Refer to Figures 4 - 6 as shown

[0053] On the basis of the technical solution of the first embodiment, further, the outlet 2 is strip-shaped, the length direction of the outlet 2 is the same as the length direction of the pipeline 1, the length of the outlet 2 is adapted to the length of the pipeline 1, and the outlet 2 is arranged along the circumferential direction of the pipeline 1.

[0054] In this application, the outlet 2 is strip-shaped, and the length direction of the outlet 2 is the same as the length direction of the pipeline 1. The length of the outlet 2 is adapted to the length of the pipeline 1. At the same time, the outlet 2 is arranged along the circumferential direction of the pipeline 1, so that after the pipeline 1 is inserted into the soil, the soil can fill the strip-shaped outlet 2. During fertilization, the contact area between the fertilizer and the soil can be increased, which is beneficial to the progress of the fertilization operation.

[0055] As a preferred embodiment, on the basis of the above method, further, a plurality of blades 7 are further provided on the pipeline 1, the blades 7 are adapted to the outlet 2, one end of the blades 7 is connected to the pipeline 1, the blades 7 can block the outlet 2, and after the pipeline 1 is inserted into the paddy field soil, the paddy field soil can push the blades 7 to bend and deform the blades 7 towards the central axis of the pipeline 1 and expose the outlet 2, and when the acting force on the blades 7 is withdrawn, the blades 7 can recover their deformation.

[0056] Further, by providing a plurality of blades 7 on the pipeline 1, when the pipeline 1 is inserted into the soil, the soil can push the blades 7 to bend and deform the blades 7 towards the central axis of the pipeline 1. During the bending deformation of the blades 7, the outlet 2 corresponding to the blades 7 can be gradually exposed, and the outlet 2 can be gradually filled with soil. And during the process of inserting the pipeline 1 into the soil, the blocked end of the pipeline 1 pushes the soil below the pipeline 1, so that during this process, the acting force of the soil on the blades 7 is relatively small. Furthermore, during this process, the blades 7 can block the outlet 2, thereby preventing the soil from filling the pipeline 1 from the outlet 2 during the process of inserting the pipeline 1 into the soil, and further providing a guarantee for the subsequent fertilizer and air to enter the pipeline 1 and act on the soil; at the same time, after the pipeline 1 is inserted into the soil to a preset position, the acting force of the soil on the blades 7 is increasing, and the acting force is F, so that under the acting force of the soil, the blades 7 gradually bend and deform towards the central axis of the pipeline 1, and the exposed outlet 2 is gradually filled with soil. Furthermore, during subsequent fertilization, the fertilizer enters the pipeline 1, and the fertilizer directly acts on the soil filling the outlet 2, which can increase the area of the soil directly contacted by the fertilizer in the pipeline 1, thereby increasing the speed and range of the fertilizer infiltrating into the soil near the side wall of the pipeline 1, facilitating the absorption of the fertilizer by the rice roots. Furthermore, during nitrogen fertilization, the utilization rate of nitrogen fertilizer can be increased, and then the nitrogen fertilizer residue in the soil can be reduced, and further the emission of greenhouse gases can be reduced.

[0057] As a preferred embodiment, on the basis of the above method, further, the part of the pipeline 1 for connecting with the blades 7 is close to the blocked end of the pipeline 1.

[0058] Further, the part of the pipe 1 for connecting with the blade 7 is close to the blocked end of the pipe 1. In this way, when the soil squeezes the blade 7 and makes the blade 7 bend, under the action of the pipe 1 and the blade 7, the cross-sectional area of the upper region of the formed channel 3 can be reduced, so that the formed channel 3 has a long-necked bottle-like structure with a narrowed upper opening. After fertilization, the fertilizer enters the channel 3 and acts on the soil near the pipe 1. During the process of the soil and the rice roots absorbing the fertilizer, the structure of the formed channel 3 can reduce the volatilization of the fertilizer. And during the rainfall period after fertilization, when the pipe 1 is in the paddy field soil, the upper closing area of the channel 3 can gradually shrink. At the same time, the upper closing area of the channel 3 can play a blocking role and can block the precipitation. Thus, during the rainfall after fertilization, the situation that the fertilizer in the channel 3 flows out of the channel 3 to the paddy field surface can be effectively reduced. Furthermore, the utilization rate of the fertilizer can be improved, and at the same time, the volatilization of the fertilizer on the paddy field surface can be reduced. When applying nitrogen fertilizer, the ammonia volatilization can be effectively reduced. Thus, the situation that NH3 in the atmosphere reacts with acid after being oxidized to cause haze weather can be reduced, and the situation that NH3 settles and returns to the land and soil can be reduced. Furthermore, the emission of greenhouse gases can be reduced, and the greenhouse effect can be mitigated.

[0059] As a preferred embodiment, on the basis of the above method, further, the pipe 1 and the blade 7 are made of resin and a non-degradable material is selected, so that the pipe 1 and the blade 7 can be repeatedly used for a long time. At the same time, it is convenient for the pipe 1 to maintain its original shape after being inserted into the soil, and it is also convenient for the blade 7 to bend and deform.

[0060] Example 4: Refer to Figure 7 as shown in

[0061] This embodiment also provides a fertilization method, which includes the following steps:

[0062] Step S1: Place the fertilization device and insert the pipe 1 on the fertilization device as described above into the paddy field soil in the corresponding rice planting area;

[0063] Step S2: Apply fertilizer. Put the fertilizer into the pipe 1 from the opening of the pipe 1, so that the fertilizer in the pipe 1 seeps into the paddy field soil;

[0064] Step S3: After the paddy field soil absorbs the fertilizer, pull out the pipe 1 from the paddy field soil.

[0065] In this application, when applying fertilizer, first place the fertilizer application device, insert the pipeline 1 on the fertilizer application device into the paddy field soil in the corresponding rice planting area to form a channel 3 required for fertilizer application, and then apply the fertilizer. Put the fertilizer into the pipeline 1 from the opening of the pipeline 1, so that the fertilizer seeps from the pipeline 1 into the paddy field soil. Specifically, after the pipeline 1 is inserted into the paddy field soil, the pipeline 1 contains water seeping out from the soil. Therefore, when applying fertilizer, the fertilizer can be mixed with water, and then the fertilizer seeps into the paddy field soil near the pipeline 1, so that the rice roots grow towards the soil rich in nutrients, that is, the rice roots grow towards the paddy field soil near the pipeline 1; after the paddy field soil absorbs the fertilizer, pull out the pipeline 1 from the paddy field soil, so that the channel 3 formed by the pipeline 1 is not blocked by the pipeline 1, and then provides more growth space for the rice roots growing near the channel 3. In this way, more space and richer nutrients are provided for the growth of rice roots, the absorption and utilization rate of fertilizer by rice is improved, while being beneficial to the growth of rice, the emission of greenhouse gas N2O can be reduced.

[0066] As a preferred embodiment, on the basis of the above method, further, in the step S3, after the pipeline 1 is inserted into the paddy field soil for 1 - 2 weeks, then pull out the pipeline 1 from the paddy field soil.

[0067] Further, in step S3, after the pipeline 1 is inserted into the paddy field soil for 1 - 2 weeks, then pull out the pipeline 1 from the paddy field soil. In this way, within 1 - 2 weeks after fertilization, the rice roots grow more densely in the soil near the pipeline 1. After pulling out the pipeline 1 from the paddy field soil, it is beneficial for the rice roots near the channel 3 to maintain the shape of the channel 3, can slow down the contraction speed of the channel 3, is beneficial for the growth of rice in the channel 3, and is beneficial for improving the air permeability of the channel 3 and the soil near the channel 3.

[0068] As a preferred embodiment, on the basis of the above method, further, the fertilizer application method involves four fertilizer application stages, namely the base fertilizer application stage, the tillering fertilizer application stage, the panicle fertilizer application stage, and the grain fertilizer application stage, and the fertilizer application stages are matched with the fertilizer application steps.

[0069] Further, the fertilizer application method is set to involve four fertilizer application stages, which are the base fertilizer application stage, the tillering fertilizer application stage, the panicle fertilizer application stage, and the grain fertilizer application stage respectively, and the fertilizer application stages are matched with the fertilizer application steps. By using the fertilizer application device of this application to apply fertilizer in each fertilizer application stage, the utilization rate of fertilizer can be greatly improved, it is convenient to apply fertilizer concentratedly to the rice roots, and the air permeability of the soil at the rice roots can be improved. While being beneficial to the growth of rice, the generation of greenhouse gases such as N2O and CH4 in the paddy field can be reduced, which is beneficial to improving the greenhouse effect.

[0070] As a preferred embodiment, on the basis of the above method, further, in the step S2, after applying the fertilizer, water is injected into the pipeline 1, and the water surface is lower than the upper surface of the paddy field soil.

[0071] In this way, during the fertilization process, by injecting water into the pipeline 1, the fertilizer particles adhering to the side wall of the pipeline 1 can fall with the water flow, which is beneficial to the infiltration of the fertilizer into the soil.

[0072] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A fertilizing device for reducing greenhouse gas emissions, characterized in that: It includes a pipe. One end of the pipe is open, and the other end is blocked. A number of outlets are provided on the side wall of the pipe. The pipe is used to be inserted into paddy field soil to form a channel. Fertilizer can be added into the pipe and seep into the soil of the paddy field from the outlets. The outlets are strip-shaped. The length direction of the outlets is the same as the length direction of the pipe. The length of the outlets is adapted to the length of the pipe. And the outlets are arranged along the circumferential direction of the pipe. A number of blades are also provided on the pipe. The blades are adapted to the outlets. One end of the blade is connected to the pipe. The blade can block the outlet. And after the pipe is inserted into the paddy field soil, the paddy field soil can push the blade so that the blade bends and deforms towards the central axis of the pipe and the outlet is exposed. When the acting force on the blade is withdrawn, the blade can restore its deformation. At the same time, after the pipe is inserted into the soil to a preset position, under the action of the soil, the blade gradually bends and deforms towards the central axis of the pipe, and the exposed outlet is gradually filled with soil. Then, when applying fertilizer subsequently, the fertilizer enters the pipe, and the fertilizer directly acts on the soil that fills the outlet, which can expand the soil area directly contacted by the fertilizer in the pipe, thereby increasing the speed and range of the fertilizer seeping into the soil near the side wall of the pipe.

2. The fertilizing device for reducing greenhouse gas emissions according to claim 1, characterized in that: The part of the pipe for connecting with the blade is close to the blocked end of the pipe.

3. A fertilization method, characterized in that: It includes the following steps: Step S1: Place the fertilizing device. Insert the pipe on the fertilizing device according to Claim 1 or 2 into the paddy field soil in the corresponding rice planting area. Step S2: Apply fertilizer. Put the fertilizer into the pipe from the open end of the pipe, so that the fertilizer in the pipe seeps into the paddy field soil. Step S3: Pull out the device. After the paddy field soil absorbs the fertilizer, pull out the pipe from the paddy field soil.

4. The fertilization method according to claim 3, characterized in that: In Step S3, after the pipe is inserted into the paddy field soil for 1 - 2 weeks, then pull out the pipe from the paddy field soil.

5. The fertilization method according to claim 4, characterized in that: The fertilizing method involves four fertilizing stages, namely the basal fertilizer application stage, the tillering fertilizer application stage, the panicle fertilizer application stage, and the grain fertilizer application stage. The fertilizing stages are matched with the fertilizing steps.

6. The fertilization method according to claim 5, wherein: In Step S2, after applying fertilizer, inject water into the pipe and make the water surface lower than the upper surface of the paddy field soil.

Images