CN114431117A - Under-mulch drip irrigation fertilization method and device for millet planting - Google Patents
Under-mulch drip irrigation fertilization method and device for millet planting Download PDFInfo
- Publication number
- CN114431117A CN114431117A CN202210221963.9A CN202210221963A CN114431117A CN 114431117 A CN114431117 A CN 114431117A CN 202210221963 A CN202210221963 A CN 202210221963A CN 114431117 A CN114431117 A CN 114431117A
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- Prior art keywords
- drip irrigation
- under
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- frame
- arch
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- 238000003973 irrigation Methods 0.000 title claims abstract description 57
- 230000002262 irrigation Effects 0.000 title claims abstract description 57
- 230000004720 fertilization Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 244000062793 Sorghum vulgare Species 0.000 title claims abstract description 15
- 235000019713 millet Nutrition 0.000 title claims abstract description 15
- 239000002362 mulch Substances 0.000 title claims abstract description 9
- 239000002689 soil Substances 0.000 claims abstract description 40
- 239000002985 plastic film Substances 0.000 claims abstract description 37
- 229920006255 plastic film Polymers 0.000 claims abstract description 37
- 239000003337 fertilizer Substances 0.000 claims abstract description 11
- 235000013339 cereals Nutrition 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000037237 body shape Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract 2
- 239000007924 injection Substances 0.000 abstract 2
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 3
- 238000005304 joining Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
- A01C23/042—Adding fertiliser to watering systems
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/247—Watering arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Soil Sciences (AREA)
- Protection Of Plants (AREA)
Abstract
The invention discloses a method and a device for applying fertilizer by drip irrigation under a mulch for planting millet, belonging to the technical field of drip irrigation under the mulch. The under-film drip irrigation fertilization method is realized based on an under-film drip irrigation fertilization device, and the under-film drip irrigation fertilization device comprises an underframe, a main arch, an auxiliary arch, an end cover, drip irrigation pipelines, soil ridges and plastic films. Through the combination of inserting of chassis, main bow member, vice bow member and end cover, can build the rack that a drip irrigation fertilizer injection unit used under the membrane around the soil ridge that has the millet relatively fast, install drip irrigation pipeline on this rack after, alright cover the plastic film on this rack, realize drip irrigation fertilizer injection under the membrane.
Description
Technical Field
The invention relates to the technical field of drip irrigation under a mulch, in particular to a method and a device for applying fertilizer by drip irrigation under a mulch for millet planting.
Background
Millet is one of staple grain crops in China and plays a very important role in agricultural production. Drip irrigation is the local irrigation of the roots of crops by using plastic pipes to send water to the roots of crops through orifices or drippers on the capillary pipes.
In the seed seedling stage of the millet, a plastic film is covered on the soil ridge embedded with the millet seeds for heat preservation and moisture preservation. At present, the common plastic film-covered hair style is that people use branches to support a shed frame on site and then cover the frame body with a plastic film. Although the cost is low, the following defects still exist:
firstly, because of the manually-supported shed frame, people need to insert and fix a frame branch serving as an arch frame into soil by one root, and need to bind a branch used for connecting adjacent arch frames on the arch frame by one root, which wastes time and labor.
And secondly, the common plastic film covering mode is to cover along the trend of the ridge ceiling rack, so the plastic film is required to be wide to cover the ridge ceiling rack. I.e. the wider the shelving, the wider the plastic film is required.
Based on the above, the invention designs a method and a device for applying fertilizer by drip irrigation under a film for millet planting, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a method and a device for drip irrigation and fertilization under a film for millet planting, which aim to solve the problems that people need to insert and fix a root of a branch serving as an arch frame into soil because of a manually-supported shed frame, the time and labor are wasted when the root of the branch used for connecting adjacent arch frames is bound on the arch frame, and a wider plastic film is needed when the shed frame is wider.
In order to achieve the purpose, the invention provides the following technical scheme: a sub-film drip irrigation fertilization method for millet planting is realized based on a sub-film drip irrigation fertilization device, and the sub-film drip irrigation fertilization device comprises an underframe, a main arch, an auxiliary arch, an end cover, a drip irrigation pipeline, soil ridges and a plastic film.
The method for applying the fertilizer by drip irrigation under the film comprises the following specific steps:
s1, arranging the soil ridges, namely regarding two adjacent rows of soil ridges as a whole, and removing sundries on the ground around the soil ridges.
S2, constructing a bottom frame, surrounding the bottom frame with two rows of soil ridges which are considered as a whole in the S1 in a rectangular fence mode, sealing soil at a frame body at the bottom of the bottom frame, filling gaps between the bottom frame and the ground and fixing the bottom frame.
S3, arranging pipelines, wherein end covers are additionally arranged at the tops of the front end and the rear end of the underframe in the S2 respectively, a pipe body of the drip irrigation pipeline penetrates through the end covers, the end covers support the drip irrigation pipeline, and the drip irrigation pipeline is located above the furrows of the two rows of soil ridges which are regarded as a whole in the S1 and used for performing drip irrigation and fertilization on the grains planted in the soil ridges.
And S4, covering with plastic films, namely uniformly erecting the main arch and the auxiliary arch on the top of the underframe in the S2, wherein the plastic films are supported by the main arch and the auxiliary arch and cover the soil ridges.
Preferably, the chassis comprises side plates positioned at the left side and the right side of the chassis, end plates positioned at the front end and the rear end of the chassis, and a connecting block used for connecting the two adjacent side plates. The joint blocks are also used for jointing the adjacent side plates and the end plates. The side plate is a rectangular plate body, the end plate comprises a main body which is a rectangular plate body, the left end and the right end of the main body are fixedly connected with a U-shaped block-shaped fixture block I, the connecting block is a rectangular block body, the front end and the rear end of the connecting block are respectively provided with a slot, and the middle of the connecting block is provided with an insertion hole.
Preferably, main bow member includes that one is arched support body, the diapire of two frame feet of main bow member support body is two card strips one that are front and back symmetric distribution respectively fixedly connected with, the frame foot of main bow member support body is taken on the roof that links up the piece, and links up the piece and is located between two card strips one that the frame foot of its main bow member support body of putting connected.
Preferably, the auxiliary arch frame comprises an arched frame body, the bottom walls of the two frame legs of the auxiliary arch frame body are respectively and fixedly connected with a U-shaped clamping block II, and the clamping block II is clamped on the top plate body of the side plate.
Preferably, the end cover includes that one is arched plate body, an jack has been seted up at the plate body middle part of end cover, the equal fixedly connected with fixture block three of antetheca at both ends about the end cover, the equal fixedly connected with fixture block four of back wall at both ends about the end cover.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the insertion combination of the underframe, the main arch, the auxiliary arch and the end cover, a shed frame for the under-film drip irrigation and fertilization device can be quickly built around the soil ridges where the millet is planted, and after a drip irrigation pipeline is arranged on the shed frame, a plastic film can be covered on the shed frame, so that the under-film drip irrigation and fertilization can be realized.
According to the invention, the shed frame for the under-film drip irrigation and fertilization device can be built in a simple plugging mode, is convenient to install and is time-saving and labor-saving.
In the invention, when the width of the plastic film is larger than that of the shed frame, the plastic film can be directly covered by the plastic film along the length direction of the shed frame; if the width of the plastic film is smaller than that of the shed frame, or the plastic film cannot be covered along the length direction of the shed frame, the plastic film can be used for covering the shed frame in the left-right direction, and the distance between two adjacent sets of auxiliary arch frame groups can be adjusted in a sliding mode according to the size of the plastic film.
In the invention, if the plastic film covers the shed frame according to the left and right directions, the plastic film is not a whole plastic film but a plurality of plastic films, so that when one plastic film is damaged, only the damaged plastic film needs to be replaced.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the undercarriage of the present invention;
FIG. 3 is a schematic view of the structure of the side panel of the present invention;
FIG. 4 is a schematic structural view of an end plate of the present invention;
FIG. 5 is a schematic view of a structure of a joint block according to the present invention;
FIG. 6 is a schematic structural view of the main arch of the present invention;
FIG. 7 is a schematic structural view of the secondary arch of the present invention;
FIG. 8 is a first structural schematic view of the tip cap of the present invention;
FIG. 9 is a second schematic structural view of an end cap according to the present invention;
FIG. 10 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 11 is an enlarged view of FIG. 1 at B.
In the drawings, the components represented by the respective reference numerals are listed below:
001-drip irrigation pipeline, 002-soil ridge, 100-bottom frame, 200-main arch, 300-auxiliary arch and 400-end cover;
110-side plate, 120-end plate, 121-fixture I, 130-engagement block, 210-fixture I, 310-fixture II, 401-insertion hole, 410-fixture III, and 420-fixture IV.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the invention provides a method and a device for applying fertilizer by drip irrigation under a film for millet planting, wherein the method for applying fertilizer by drip irrigation under a film is realized based on a device for applying fertilizer by drip irrigation under a film.
In the present invention, the under-film fertigation apparatus comprises an underframe 100, a plurality of main arches 200, a plurality of auxiliary arches 300, two end caps 400, a drip irrigation pipe 001 and a plurality of rows of soil ridges 002. In addition, the under-film fertigation device also comprises a plastic film for covering the soil ridges 002.
In the step S1 of the sub-membrane fertigation method provided by the invention, the step is to arrange the soil ridges 002. Namely, after the millet is buried in the pit on the soil ridge 002, two adjacent rows of soil ridges 002 are regarded as a soil ridge group, and sundries on the soil around the soil are removed, so that the soil around the soil tends to be flat and does not fluctuate.
Referring to fig. 2 to 5, the bottom chassis 100 of the present invention includes a plurality of side plates 110 in the shape of rectangular laths, two end plates 120, and a plurality of connecting blocks 130 in the shape of rectangular laths.
The end plate 120 is an integrally formed plate frame, the main body of the end plate 120 is a rectangular plate body, the left end and the right end of the plate body are respectively provided with a U-shaped block-shaped fixture block 121, the fixture block 121 is integrally connected with the main body of the end plate 120, and the fixture blocks 121 at the left end and the right end of the end plate 120 are arranged in a left-right symmetrical mode.
The front wall and the rear wall of the connecting block 130 are both provided with a slot in a square groove shape, and the slot penetrates through the upper wall and the lower wall of the connecting block 130. The middle part of the connection block 130 is provided with a square through hole-shaped jack, and the jack penetrates through the upper wall and the lower wall of the connection block 130.
In the step S2 of the method for applying drip irrigation fertilizer under film provided by the invention, the step is the building of the underframe 100. After the step S1 is completed, according to the length of the ridge group regarded as in S1, the side plates 110 are selected to form two side plate groups with lengths larger than the length of the ridge group in an end-to-end manner, the two side plate groups have the same length, and the grooves of the ridge group are used as a symmetry axis to be distributed on the left side and the right side of the ridge group in a left-right parallel and symmetrical manner. In addition, the clamping cavities at the front end and the rear end of the two side plate groups are respectively provided with an end plate 120, and the left end and the right end of the end plate 120 are respectively connected with the end parts of the two side plate groups. In this manner, the underframe 100 encloses the ridge group in a rectangular fence-like manner. Finally, the frame body at the bottom of the base frame 100 is filled with crushed soil, soil is filled into a gap formed between the base frame 100 and the ground surface, and the soil is stacked on the left and right sides of the plate body at the bottom of the base frame 100, and the soil is compacted, so that the soil fixes the base frame 100.
In the same side plate group, two adjacent side plates 110 are connected by the same connecting block 130. That is, the rear plate of the front side plate 110 is inserted into the slot of the slot formed in the front wall of the connecting block 130, and the front plate of the rear side plate 110 is inserted into the slot of the slot formed in the rear wall of the connecting block 130.
In the front end plate 120, a connecting block 130 is inserted into each of the groove cavities of the first clamping blocks 121 on the left and right sides of the end plate 120, and the groove cavity of the slot formed in the rear wall of the connecting block 130 is used for inserting the plate body at the front end of the side plate group.
In the end plate 120 located at the rear, a joining block 130 is respectively inserted into a slot cavity of a first clamping block 121 on the left side and a slot cavity of a second clamping block 121 on the right side of the end plate 120, and a slot cavity of a slot formed in the front wall of the joining block 130 is used for inserting a plate body at the rear end of the side plate group.
Referring to fig. 6 to 11, the main arch 200 of the present invention is an integrally formed arch, the main body of the main arch 200 is an arched plate frame, the bottom walls of the left and right frame legs of the arched plate frame are fixedly connected with two clamping strips 210 which are parallel to each other in a front-back manner and are symmetrically arranged, and the clamping strips 210 are integrally connected with the main body of the main arch 200.
The auxiliary arch 300 provided by the invention is an integrally formed arch, the main body of the auxiliary arch 300 is an arched rod frame, the left and right frame legs of the rod frame are fixedly connected with a U-shaped fixture block II 310, the fixture block II 310 is integrally connected with the main body of the auxiliary arch 300, and the two fixture block II 310 are arranged in a left-right parallel and symmetrical manner. Wherein, every three secondary arches 300 are respectively arranged and leaned together to form a group of secondary arch groups.
The end cover 400 provided by the invention is an integrally formed cover plate, the bottom wall of the end cover 400 is a plane, the top wall of the end cover 400 is an arched surface, and the top of the end cover 400 is provided with an outwards extending brim. The middle part of the end cover 400 is provided with a jack 401 for inserting the drip irrigation pipe 001, and the jack is used for supporting the pipe body of the drip irrigation pipe 001. The front walls of the left end and the right end of the end cover 400 are fixedly connected with a third clamping block 410, and the rear walls of the left end and the right end of the end cover 400 are fixedly connected with a fourth clamping block 420.
In the step S3 of the method for applying fertigation under mulch, the step is the arrangement of pipelines. That is, after the step S2 is completed, the end cap 400 is firstly erected on the top of the end plate 120, the position of the end cap 400 is limited by the three fixture blocks 410 and the four fixture blocks 420, and then the drip irrigation pipeline 001 passes through the insertion holes 401 of the two end caps 400, so that the drip irrigation pipeline 001 is erected above the furrows of the ridge group, and the drip irrigation heads of the drip irrigation installed on the pipe body of the drip irrigation pipeline 001 perform drip irrigation fertilization on the grains in the ridge.
In step S4 of the method for applying drip irrigation under plastic film provided by the present invention, the step is covering with plastic film. Namely, after the step S3 is completed, the plastic film covers and hides the ridge group by means of the main arch 200 and the sub-arch group.
The underframe 100, the main arch 200, the sub-arch 300 and the end plate 400 are built into a canopy frame. The end plate 400 and the main arch 200 pressed thereon can clamp and fix the edge portion of the plastic film. The sub-arch group can also clamp the edge of the plastic film by first removing the middle sub-arch 300 from the underframe 100, then placing the edge of the plastic film to be clamped on the frame bodies of the left and right sub-arches 300 in the sub-arch group, and finally replacing the previously removed sub-arch 300 so that the middle sub-arch 300 in the arch group presses the plastic film, and the left and right sub-arches 300 in the sub-arch group support the plastic film.
In the foregoing, exemplary embodiments of the proposed solution have been described in detail with reference to preferred embodiments, however, it will be understood by those skilled in the art that many variations and modifications may be made to the specific embodiments described above, and that many combinations of the various features and structures presented in the present invention may be made without departing from the inventive concept, the scope of which is defined by the appended claims.
Claims (5)
1. A method for drip irrigation and fertilization under a film for millet planting is characterized by comprising the following steps: the under-film drip irrigation fertilization method is realized based on an under-film drip irrigation fertilization device, and the under-film drip irrigation fertilization device comprises an underframe (100), a main arch (200), an auxiliary arch (300), an end cover (400), a drip irrigation pipeline (001), soil ridges (002) and a plastic film;
the method for applying the fertilizer by drip irrigation under the film comprises the following specific steps:
s1, arranging soil ridges (002), regarding two adjacent rows of soil ridges (002) as a whole, and removing sundries on the ground around the soil ridges;
s2, constructing an underframe (100), enclosing two rows of soil ridges (002) which are considered as a whole in S1 by the underframe (100) in a rectangular fence mode, sealing soil at a frame body at the bottom of the underframe (100) for filling gaps between the underframe (100) and the ground and fixing the underframe (100);
s3, arranging pipelines, namely additionally arranging end covers (400) at the tops of the front end and the rear end of an underframe (100) in the S2, enabling the tube body of a drip irrigation pipeline (001) to penetrate through the end covers (400), enabling the end covers (400) to support the drip irrigation pipeline (001), and enabling the drip irrigation pipeline (001) to be located above furrows of two rows of soil ridges (002) which are regarded as a whole in the S1 and used for performing drip irrigation and fertilization on the grains planted in the soil ridges (002);
and S4, covering with plastic films, namely uniformly erecting the main arch (200) and the auxiliary arch (300) on the top of the underframe (100) in the S2, wherein the plastic films are supported by the main arch (200) and the auxiliary arch (300) and cover and hide the soil ridges (002).
2. The under-mulch drip irrigation and fertilization device applying the under-mulch drip irrigation and fertilization method of claim 1, wherein: the chassis (100) comprises side plates (110) positioned at the left side and the right side of the chassis (100), end plates (120) positioned at the front end and the rear end of the chassis (100), and a connecting block (130) used for connecting two adjacent side plates (110);
the joint block (130) is also used for jointing the adjacent side plate (110) and the end plate (120);
the side plate (110) is a rectangular plate body, the end plate (120) comprises a main body which is in a rectangular plate body shape, a U-shaped block-shaped clamping block I (121) is fixedly connected to the left end and the right end of the main body, the connecting block (130) is a rectangular block body, a slot is formed in each of the front end and the rear end of the connecting block (130), and a jack is formed in the middle of the connecting block (130).
3. The under-film fertigation device according to claim 2, wherein: main bow member (200) are including one and are arched support body, the diapire of two frame feet of main bow member (200) support body is two card strips (210) that are front and back symmetric distribution respectively fixedly connected with, the frame foot of main bow member (200) support body is taken on the roof that links up piece (130), and links up piece (130) and is located between two card strips (210) that the frame foot of its main bow member (200) support body of putting connects.
4. The under-film fertigation device according to claim 2, wherein: the auxiliary arch frame (300) comprises an arched frame body, the bottom walls of two frame legs of the auxiliary arch frame (300) are fixedly connected with a U-shaped fixture block II (310) respectively, and the fixture block II (310) is clamped on the top plate body of the side plate (110).
5. The under-film fertigation device according to claim 2, wherein: end cover (400) are including the one and are arched plate body, a jack (401) has been seted up at the plate body middle part of end cover (400), the equal fixedly connected with fixture block three (410) of antetheca at both ends about end cover (400), the equal fixedly connected with fixture block four (420) of back wall at both ends about end cover (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210221963.9A CN114431117A (en) | 2022-03-07 | 2022-03-07 | Under-mulch drip irrigation fertilization method and device for millet planting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210221963.9A CN114431117A (en) | 2022-03-07 | 2022-03-07 | Under-mulch drip irrigation fertilization method and device for millet planting |
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| CN114431117A true CN114431117A (en) | 2022-05-06 |
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| CN202210221963.9A Pending CN114431117A (en) | 2022-03-07 | 2022-03-07 | Under-mulch drip irrigation fertilization method and device for millet planting |
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| CN215530331U (en) * | 2021-09-01 | 2022-01-18 | 山东省烟台市农业科学研究院 | Assembled foldable small arch shed for seedling cultivation |
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