CN114916282B - Wheat seeding belt and preparation method thereof - Google Patents
Wheat seeding belt and preparation method thereof Download PDFInfo
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- CN114916282B CN114916282B CN202210593101.9A CN202210593101A CN114916282B CN 114916282 B CN114916282 B CN 114916282B CN 202210593101 A CN202210593101 A CN 202210593101A CN 114916282 B CN114916282 B CN 114916282B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/04—Arranging seed on carriers, e.g. on tapes, on cords ; Carrier compositions
- A01C1/042—Tapes, bands or cords
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/04—Arranging seed on carriers, e.g. on tapes, on cords ; Carrier compositions
- A01C1/046—Carrier compositions
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/06—Coating or dressing seed
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/04—Arranging seed on carriers, e.g. on tapes, on cords ; Carrier compositions
- A01C2001/048—Machines
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Abstract
The invention discloses a wheat seeding belt preparation method, which comprises the following steps: s1, preparing and forming a wheat seeding belt by using a melt-blowing technology, and coiling the wheat seeding belt into a groove of a seed disc, wherein the groove is in a vortex shape; wherein the wheat seeding belt is provided with embedding units with upward openings at equal intervals; s2, soaking the wheat seeds into a film forming agent to form a film on the surfaces of the wheat seeds, taking out and air-drying; s3, scattering seeds from the right upper part of the seed tray, enabling a part of the seeds to fall into the embedding unit, and collecting the seeds which do not fall into the embedding unit; and S4, spraying water right above the seed tray, enabling the film to generate viscosity when meeting water, forming adhesion to the embedding unit, and drying. Through the combination of melt-blown technology and film forming technology, the seeding zone with the embedding unit is prepared and formed, and the film forming pretreatment is carried out on the seeds, so that the seeds are more easily combined with the embedding unit after film forming, the use of an adhesive in the prior art is reduced, and the germination and emergence of the seeds are improved.
Description
Technical Field
The invention relates to the technical field of wheat seed sowing or storage, in particular to a wheat sowing belt and a preparation method thereof.
Background
In the sowing process of wheat, certain space is required to be left between the wheat so as to avoid the condition that the seeds or wheat seedlings are lack of development and poor development in a small time. In order to obtain the best seed sowing distance, the seeds are positioned by a sowing belt in the prior art.
The sowing belt in the prior art is generally formed by two layers, and the seeds are arranged between two paper layers at a constant mutual distance. There are the following problems: 1. the rupture strength of the paper layer of the sowing belt is low, so that the seeds are easily exposed and oxidized and are inconvenient to store; 2. the presence of the paper layers and the adhesive on the two sides can prevent the seeds from exchanging substances with soil or moisture, so that the germination or emergence is slow; 3. the adhesion of the seeds and the sowing belt is realized by the adhesive, and the adhesive has negative influence on the germination of the seeds and influences the germination and emergence of the seeds; 4. the seeds need to be accurately arranged, the gluing operation needs to be carried out before the arrangement process, and the bouncing and rolling conditions of the seeds are easy to occur during the arrangement, so that the seeds cannot be adjusted.
In view of the above, there is a need for improvement of wheat seeding belts in the prior art to solve the above problems.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides a preparation method of a wheat seeding belt, aims to solve the problem that the seeding belt is easy to break to expose seeds, solves the problem that the seeds are limited by a paper layer and an adhesive to cause unsmooth exchange with soil or moisture substances, solves the negative influence of the adhesive on the positioning of the seeds, and solves the problems of difficult positioning and difficult adjustment in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: a preparation method of a wheat seeding belt comprises the following steps:
s1, preparing and forming a wheat seeding belt by using a melt-blowing technology, and coiling the wheat seeding belt into a groove of a seed disc, wherein the groove is in a vortex shape; wherein, the wheat seeding belt is provided with embedding units with upward openings at equal intervals for receiving wheat seeds;
s2, soaking the wheat seeds into a film-forming agent to form a layer of film on the surfaces of the wheat seeds, taking out and air-drying;
s3, sprinkling the wheat seeds in the S2 from the right upper part of the seed tray, enabling a part of the wheat seeds to fall into the embedding unit, collecting the wheat seeds which do not fall into the embedding unit, and repeating for multiple times;
and S4, spraying water right above the seed tray, enabling the film to generate viscosity when meeting water, forming adhesion to the embedding unit, and drying.
In a preferred embodiment of the present invention, in S1, the preparation method of the wheat seeding belt comprises:
the melt-blown technology is utilized for laminating and primary forming to form a long strip structure, and a plurality of depressions are symmetrically formed on two long edges of the long strip structure;
bending the strip structure along the central line of the width direction, and combining the depressions to form the embedding unit;
bonding the bent strip structure;
the edges of the embedding units are closed to form a semi-enclosed structure.
In a preferred embodiment of the invention, in the primary forming, symmetrical polygonal hollows are left in the middle of the strip structure; or the like, or, alternatively,
after the edge of the embedding unit is sealed, cutting a triangular or quadrangular hollow part on the bent sealing opening;
wherein, the hollowed-out position is positioned between the adjacent recesses at one edge.
In a preferred embodiment of the invention, the bonding method is one of gluing, ultrasonic bonding, thermal bonding or sewing, wherein glutinous rice glue is used in the gluing; the closure is one of ultrasonic bonding or stitching.
In a preferred embodiment of the present invention, in S3, the posture of the wheat seeds not falling onto the embedding unit is changed by vibrating the seed tray, so that the wheat seeds fall into the embedding unit, wherein the vibration may be electromagnetic vibration or motor type vibration, and the vibration direction is horizontal vibration.
In a preferred embodiment of the present invention, the embedding unit is a semi-ellipsoid structure.
In a preferred embodiment of the present invention, the method for determining the geometric characteristics of the embedding unit comprises:
measuring the geometric characteristics of the wheat seeds and establishing a virtual model of the seeds, wherein the geometric characteristics comprise length, width and thickness;
adding a compensation value according to the virtual model, and amplifying according to an unequal ratio to establish a theoretical embedding model;
and splitting the theoretical embedding model along the length direction to form two semi-ellipsoids with the same size, wherein the length, the width and the depth of each semi-ellipsoid are consistent with those of the embedding unit.
In a preferred embodiment of the present invention, the film forming agent is a mixture of alginate oligosaccharides and water, wherein 1-10 g of alginate oligosaccharides is added per liter of water.
In a preferred embodiment of the present invention, the surface of the recess is provided with a plurality of through holes for communicating the embedding unit with the outside.
In a preferred embodiment of the present invention, in S3, the wheat seeds that do not fall into the embedding unit may be collected by scraping off an inclined seed tray with a scraper, wherein the inclination angle of the seed tray is not greater than 30 °.
The invention provides a wheat seeding belt, which is prepared and formed based on the preparation method of the wheat seeding belt; two long limits in wheat seeding area are provided with a plurality of caves along the symmetry, sunken equidistant arrangement, rectangular structure is bent along the width direction symmetry to a plurality of sunken combinations that are bending opening one side form the embedding unit, and the wheat seed passes through the film-forming agent adhesion and is in the embedding unit.
In a preferred embodiment of the invention, the wheat seeding belt is in a strip structure and is prepared from polylactide material by a melt-blowing technology.
In a preferred embodiment of the present invention, the thickness of the strip structure at the recessed position is 1.3-1.5 mm, and the thickness of the rest parts is 1.0-1.2 mm.
In a preferred embodiment of the present invention, the film forming method of the wheat seeds in S2 comprises:
s21, dissolving the brown algae oligosaccharide in water to form a film forming agent, wherein the film forming agent is viscous;
s22, immersing the seeds into the film forming agent in the S21, stirring clockwise, taking out, draining, forming a layer of film on the surfaces of the seeds, and drying.
The invention provides a wheat seeding belt forming device based on the wheat seeding belt preparation method, which comprises a primary forming assembly, a bending assembly and a gluing assembly; the primary molding assembly comprises: the die comprises a plurality of die heads arranged in an array manner and a molding belt arranged right below the die heads, wherein a plurality of molding lugs are arranged on two edges of the molding belt; the lower part of the die head is provided with a spinneret orifice forming lug which has the same shape and size with the recess; the subassembly of bending includes: the left pressing plate and the right pressing plate are connected through a rotating shaft, mounting grooves matched with the strip structures are formed in two sides of the surfaces of the left pressing plate and the right pressing plate, and the arrangement and the size of the mounting grooves are consistent with those of the recesses; the gluing component is a movable gluing head which is arranged right above the left pressing plate and the right pressing plate; the moving position of the gluing head corresponds to the gluing position; the gluing head adopts an array gluing mode, and the gluing position is free from depression.
The invention solves the defects in the background art, and has the following beneficial effects:
(1) The invention provides a wheat seeding belt preparation method, which is characterized in that a seeding belt with an embedding unit is prepared and formed by combining a melt-blowing technology and a film forming technology, and the seeds are subjected to film forming pretreatment, so that the seeds are more easily combined with the embedding unit after film forming, the use of an adhesive in the prior art is reduced, and the germination and seedling emergence of the seeds are improved.
(2) According to the invention, a virtual model of the seeds is established by measuring the geometric characteristics of the seeds, and a theoretical embedding model is established according to the unequal ratio amplification, so that the geometric characteristics of an embedding unit are established; the design that the recess is larger than the seeds enables the seeds to easily enter the embedding unit, and a certain space is reserved to enable the seeds to change postures in the shaking process; on the other hand, the entry of redundant seeds is reduced.
(3) After the film-forming agent is moistened again, the film-forming agent generates a viscosity effect due to a large number of hydrophilic groups in the brown alga oligosaccharide, so that the seeds are bonded with the embedding units, and the accurate positioning of the seeds is realized.
(4) According to the invention, the brown algae oligosaccharide forms a layer of film on the surface of the seed, so that the problem of oxidation or microorganism growth caused by long-time exposure of the seed in the air is prevented, the water transpiration in the seed is reduced, the wheat seeding belt is stored for a long time, and the problem of seed exposure oxidation after the paper layer is broken in the prior art is solved.
(5) According to the invention, the sequence of preparing the strip-shaped structure and assembling the wheat seeds is provided, so that the wheat seeds do not need to be pressed in the process of combining the sowing belts, and only the seeds need to be scattered on the surface of the seed tray, thereby avoiding the situation of breakage caused by pressing of the seeds in the prior art; due to the pre-prepared depressions, the distance between the seeds is determined before assembly, the positioning difficulty is reduced, and the positioning is accurate.
(6) The sowing belt is prepared from the polylactide material, has certain plasticity, is favorable for improving the fracture strength of the sowing belt, meets the requirement of forming a sunken or embedded unit, can be quickly degraded, and has small influence on the germination of wheat seeds.
(7) The through holes are formed in the surfaces of the depressions of the strip structures and are used for communicating the embedding units with the outside, so that the wheat seeds can be subjected to material exchange with the outside soil or water, and the germination rate or emergence rate of the wheat seeds is improved.
(8) The depth compensation value of the embedding unit is larger than the compensation value of the length or the width of the embedding unit, the design ensures that when the seeds are embedded into the embedding unit, the great part of the thickness of the wheat seeds is in the embedding unit, the small part of the thickness of the wheat seeds protrudes out of the embedding unit, and the protruding part enables the seeds to be directly contacted with soil or moisture in the later planting process, so that the material exchange is smoother, and the problem that the seeds are limited by paper layers and adhesives in the prior art, so that the material exchange with the soil or moisture is not smooth is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a flow chart of a method of manufacturing a wheat seeding strip according to a preferred embodiment of the present invention;
FIG. 2 is a flow chart of a molding method of a preferred embodiment of the present invention;
FIG. 3 is a schematic perspective view of a wheat seeding belt according to a preferred embodiment of the present invention;
FIG. 4 is a schematic illustration of the elongated structure in the initial forming of a preferred embodiment of the invention;
fig. 5 is a flow chart of a geometric feature determination method of an embedding unit of a preferred embodiment of the present invention;
in the figure: 1. sowing wheat seeds; 2. recessing; 3. an embedding unit; 4. and (6) hollowing out.
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.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1, a flow chart of a method for preparing a wheat seeding strip 1 of the present invention is shown, which comprises the following steps:
s1, preparing and forming a wheat seeding belt 1 by using a melt-blowing technology, and coiling the wheat seeding belt 1 into a groove of a seed disc, wherein the groove is in a vortex shape; wherein, the wheat seeding belt 1 is provided with embedding units 3 with upward openings at equal intervals for receiving wheat seeds;
s2, soaking the wheat seeds into a film forming agent to form a layer of film on the surfaces of the wheat seeds, taking out and air-drying;
s3, sprinkling the wheat seeds in the S2 from the right upper part of the seed tray, enabling a part of the wheat seeds to fall into the embedding unit 3, collecting the wheat seeds which do not fall into the embedding unit 3, and repeating for multiple times;
and S4, spraying water right above the seed tray, enabling the film to generate viscosity when meeting water, forming adhesion to the embedding unit 3, and drying.
According to the invention, the sequence of preparing the strip-shaped structure and assembling the wheat seeds is provided, so that the wheat seeds do not need to be pressed in the process of combining the sowing belts, and only the seeds need to be scattered on the surface of the seed tray, thereby avoiding the situation of breakage caused by pressing of the seeds in the prior art; due to the pre-prepared depressions, the distance between the seeds is determined before assembly, the positioning difficulty is reduced, and the positioning is accurate.
The wheat seeding belt 1 is in a long strip structure and is prepared from polymers through a melt-blowing technology, wherein the polymers are degradable materials. The preferred degradable material in the present invention is a polylactide material. The polylactide material is obtained by using starch extracted from annual plants such as corn, wheat and wood paste as an initial raw material, synthesizing lactic acid and polymerizing.
The polylactide material has certain plasticity, is favorable for improving the fracture strength of the sowing belt and meets the requirement of forming the pit 2 or the embedding unit 3, and can be decomposed into carbon dioxide and water in one month after contacting with soil or water, and the carbon dioxide and water become the starting raw materials of starch under the action of sunlight photosynthesis, so that the environment is not polluted, and the influence on the germination of wheat seeds is small.
As shown in fig. 2, in S1 of the present invention, the method for forming the wheat seeding belt 1 includes:
a1, laminating and primary forming by using a melt-blowing technology to form a long strip structure, wherein a plurality of depressions 2 are symmetrically arranged on two long edges of the long strip structure;
and A2, bending the long strip structure along the central line of the width direction, and combining the depressions 2 to form an embedding unit 3.
A3, bonding the bent strip structure; the bonding method is one of gluing, ultrasonic bonding, heat bonding or sewing, wherein glutinous rice glue is used in gluing;
and A4, closing the edge of the embedding unit 3 to form a semi-enclosed structure, wherein the closing is one of ultrasonic bonding or sewing.
As shown in fig. 3, a schematic three-dimensional structure diagram of a wheat seeding strip 1 of the present invention is shown. The wheat seeding belt 1 is prepared by the preparation method. Two long edges of wheat seeding area 1 are provided with a plurality of sunken 2 along the symmetry, and sunken 2 equidistant arrangement, rectangular structure bend along the width direction symmetry to a plurality of sunken 2 combinations that bend opening one side form embedding unit 3, the wheat seed passes through the adhesion of film-forming agent in embedding unit 3.
The distance between the depressions in the present invention is 10 to 12cm, preferably 11cm.
The thickness of the strip structure at the position of the concave 2 is 1.3-1.5 mm, and the thickness of the rest parts is 1.0-1.2 mm. The strip structure at the position of the recess 2 is thickened, the plasticity of the wheat seeding belt 1 is improved, and the forming of the recess 2 and the embedding unit 3 is ensured.
As shown in fig. 4, in the primary forming, a symmetrical polygonal hollow 4 is left in the middle of the long strip structure; or after the edge of the embedding unit 3 is sealed, the triangular or quadrangular hollow 4 is cut on the bent sealing opening; wherein, fretwork 4 position is located between the adjacent sunken 2 of an edge.
Based on the S1 and the preparation method, the invention provides a molding device of a wheat seeding belt 1. This former, this former includes: the device comprises a primary forming assembly, a bending assembly and a gluing assembly.
The primary forming assembly comprises a plurality of die heads arranged in an array mode and forming belts arranged right below the die heads, and a plurality of forming convex blocks are arranged on two edges of each forming belt. The lower part of the die head is provided with a spinneret orifice forming lug which is consistent with the shape and the size of the dent 2.
The spray head sprays the polymer on the surface of the forming belt, and the polymer sprayed by the spray head just irradiates the width range of the forming belt. The polymer melt stream extruded from the die orifices is drawn by high velocity hot air to form ultra-fine fibers which coalesce on the forming belt and bond to form a sliver structure.
The middle part of the forming belt is provided with symmetrical polygonal hollows 4. Preferably diamond-shaped cutouts 4, which eliminates the need to cut the as-formed strip structure after bending.
The bending assembly of the invention comprises: the left pressing plate and the right pressing plate are connected through the rotating shaft, mounting grooves matched with the strip structures are formed in the two sides of the surface of the left pressing plate and the surface of the right pressing plate, and the arrangement and the size of the mounting grooves are consistent with those of the recess 2.
The gluing component is a movable gluing head which is arranged right above the left pressing plate and the right pressing plate; the position where the gluing head moves corresponds to the gluing position. The glue head here applies the glue in an array and the glue sites exclude the depressions 2.
The long-strip structure prepared by the primary forming assembly is transferred to the left pressing plate and the right pressing plate, and the depressions 2 in the long-strip structure are ensured to correspond to the mounting grooves one to one; the gluing head is used for gluing the surface of the strip structure, and the rotating shaft is rotated to enable the left pressing plate and the right pressing plate to be overlapped, so that gluing, bending and shaping are realized.
The sticky rice glue used in the invention comprises the main components of edible sticky rice starch, edible potassium sorbate, edible white vinegar and water. The glutinous rice glue in the invention is edible glue, and the problems of edible safety and environmental pollution of wheat seeds are solved. The glutinous rice glue is not directly contacted with the wheat seeds, only plays a role in forming the pits 2 or the embedding units 3, and avoids the influence on the wheat seeds.
In order to ensure the stability of the embedding unit 3 in the strip structure, the joint of the two recesses 2 needs to be reinforced. The invention can reinforce the seam by means of ultrasonic technology or manual sewing and the like.
The formed wheat seeding belt 1 is arranged in a groove of a disc of the wheat seeding belt 1 in a disc coiling mode. After the strip-shaped structure is bent, fibers at the bent part are bent and even broken, so that the bent closed part is not flat and smooth and wrinkles are formed easily during coiling, and the coiling is difficult. According to the invention, the hollow 4 is arranged at the bending closed part of the recess 2, and the hollow 4 is beneficial to guiding the coiling direction of the strip structure, so that the coiled wheat seeding belt 1 is more compact. The hollow 4 in the invention is not limited to be triangular, quadrangular or other special-shaped structures.
In the invention, the posture of the wheat seeds which do not fall on the embedding unit 3 is changed by vibrating the seed tray, so that the wheat seeds fall in the embedding unit 3. The vibration may be electromagnetic vibration or motor vibration, and the vibration direction is horizontal vibration.
In S3 of the present invention, the wheat seeds that do not fall into the embedding unit 3 may be collected by scraping off an inclined seed tray in conjunction with a scraper. The inclination angle of the seed tray is not more than 30 degrees.
The recess 2 may be a hemiellipsoid or semi-ellipsoid structure in the present invention, and a hemiellipsoid structure is preferable in the present invention.
In the invention, the wheat seeds of the same variety are selected as much as possible, and the appearance characteristics of the wheat seeds of the same variety are similar, so that the same design of the embedding unit 3 is facilitated. The spacing between the depressions 2 in this embodiment is determined according to the actual conditions of agricultural production. The size of the recess 2 in this embodiment is matched with the shape of the wheat seed. The seeds of each variety are slightly different in geometric dimension, and the size of the embedding unit 3 and further the size of the recess 2 are determined by measuring the geometric characteristics of the seeds of different varieties.
As shown in fig. 5, the method for determining the geometrical characteristics of the recess 2 in the present invention comprises:
b1, measuring the geometric characteristics of the wheat seeds and establishing a virtual model of the seeds, wherein the geometric characteristics comprise length, width and thickness;
b2, increasing a compensation value according to the virtual model, and amplifying according to an unequal ratio to establish a theoretical embedding model;
and B3, splitting the theoretical embedding model along the length direction to form two semi-ellipsoids with the same size, wherein the length, the width and the depth of each semi-ellipsoid are consistent with those of the embedding unit.
Wherein, in B1, the method for measuring the geometric characteristics of the wheat seeds comprises the following steps: the method comprises the steps of placing wheat seeds in three-dimensional coordinates, measuring the length l, the width b and the thickness h of the wheat seeds by using a three-axis instrument (such as a vernier caliper), taking an average value after multiple tests are carried out, enabling the wheat seeds to be approximate to ellipsoids, and obtaining a virtual model of each variety of wheat seeds.
In B2, the length L, the width B and the depth H of the theoretical embedding model are determined according to the length L, the width B and the thickness H of the wheat seeds in the virtual model. The determination method comprises the following steps: adding compensation values to the length, width and thickness of the wheat seeds, wherein the compensation values are 5% -10% of the length, 5% -10% of the width and 40% -50% of the thickness of the wheat seeds. In the present invention, the preferred compensation value is 7% of the length, 7% of the width and 35% of the thickness of the wheat seed. Namely: l = L (1+7%); b = B (1+7%); h = H (1 + 45%). The theoretical embedding model here corresponds to an unequal magnification of the virtual model, and is formed as another ellipsoid.
The length and the width of the theoretical embedding model are slightly larger than the shape of the wheat seeds, so that the seeds can easily enter the embedding unit 3, and a certain space is reserved so that the posture of the seeds can be changed in the shaking process; on the other hand, the entry of redundant seeds is reduced.
In A3, the theoretical embedding model in the present invention and the embedding unit 3 in the above described combination by the recess 2 are distinguished in that: the size of the embedding unit 3 combined by the recess 2 is half of the volume of the theoretical embedding model, i.e. two equally large semi-ellipsoids cut open from the length direction of the theoretical embedding model. The semi-ellipsoid and the recess 2 have the same outer dimensions.
Therefore, the depth compensation value of the embedding unit 3 is larger than the length or width compensation value of the embedding unit 3, the design enables the maximum thickness of the wheat seeds to be in the embedding unit 3 when the seeds are embedded into the embedding unit 3, the minimum thickness of the wheat seeds protrudes out of the embedding unit 3, and the protruding parts enable the seeds to be in direct contact with soil or moisture in the later planting process, so that the material exchange is smoother.
In one invention, the length, width and thickness of Yangmai No. 12 are respectively measured to be 8.04mm, 2.99mm and 2.19mm, and the length, width and depth of the theoretical embedding model corresponding to Yangmai No. 12 variety are respectively 8.60mm, 3.20mm and 3.18mm. Similarly, the length, width and thickness of the Mian No. 6 variety are respectively 7.98mm, 2.86mm and 2.20mm, and the length, width and depth of the theoretical embedding model corresponding to the Mian No. 6 variety are respectively 9.20mm, 3.06mm and 3.19mm.
The surface of the recess 2 with the strip structure is provided with a plurality of through holes which are used for communicating the embedding unit 3 with the outside, so that the wheat seeds can exchange substances with the outside soil or water, and the germination rate or emergence rate of the wheat seeds is improved.
The film forming agent of S2 is a mixture of alginate-derived oligosaccharide and water, and 1-10 g of alginate-derived oligosaccharide is added into each liter of water to prepare the film forming agent with the mass concentration of 0.01-0.1% (w/v).
The specific film forming method comprises the following steps:
s21, dissolving the brown algae oligosaccharide in water to form a film forming agent, wherein the film forming agent is viscous;
s22, immersing the seeds into the film forming agent in the S21, stirring clockwise, taking out, draining, forming a layer of film on the surfaces of the seeds, and drying.
In S22 of the present invention, in order to prevent the film-forming agent from causing adhesion between the seeds, the seeds need to be separated before draining and after drying. Before the film on the seeds is not completely solidified, the seeds are separated by using a drum-type air drying or drying mode to form the seeds with separated grains.
In the present invention, 200g of seeds are added to 1L of water.
The film-forming agent of the invention has the following functions: 1. after the moistening again, the film-forming agent generates a viscosity effect due to a large number of hydrophilic groups in the brown alga oligosaccharide, so that the seeds are bonded with the embedding units 3, and the accurate positioning of the seeds is realized; 2. the alginate oligosaccharide forms a layer of film on the surface of the seeds, so that the problem of oxidation or microbial growth caused by long-time exposure of the seeds in the air is prevented, the moisture transpiration in the seeds is reduced, and the wheat seeding belt 1 is stored for a long time; 3. the brown algae oligosaccharide can be used as a signal regulating molecule to promote the germination of seeds, further induce the secretion of plant growth hormones such as indoleacetic acid and the like in plants and realize the rapid growth of wheat.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A preparation method of a wheat seeding belt is characterized by comprising the following steps:
s1, preparing and forming a wheat seeding belt by using a melt-blowing technology, and coiling the wheat seeding belt into a groove of a seed disc, wherein the groove is in a vortex shape; wherein, the wheat seeding belt is provided with embedding units with upward openings at equal intervals for receiving wheat seeds; the molding method of the wheat seeding belt comprises the following steps: the melt-blown technology is utilized for laminating and primary forming to form a long strip structure, and a plurality of depressions are symmetrically formed on two long edges of the long strip structure; bending the strip structure along the central line in the width direction, and combining the recesses to form the embedding unit; bonding the bent strip structures; the edge of the embedding unit is closed to form a semi-enclosed structure; the surface of the recess is provided with a plurality of through holes which are used for communicating the embedding unit with the outside;
s2, soaking the wheat seeds into a film forming agent to form a layer of film on the surfaces of the wheat seeds, taking out and air-drying;
s3, sprinkling the wheat seeds in the S2 from the right upper part of the seed tray, enabling a part of the wheat seeds to fall into the embedding unit, collecting the wheat seeds which do not fall into the embedding unit, and repeating for multiple times;
and S4, spraying water right above the seed tray, enabling the film to generate viscosity when meeting water, forming adhesion to the embedding unit, and drying.
2. The method for preparing a wheat seeding strip according to claim 1, wherein the method comprises the following steps: in the primary forming, symmetrical polygonal hollows are reserved in the middle of the strip structure; or the like, or, alternatively,
after the edge of the embedding unit is sealed, cutting a triangular or quadrangular hollow part on the bent sealing opening;
wherein, the hollowed-out position is positioned between the adjacent depressions on one edge.
3. The wheat seeding strip preparation method according to claim 1, wherein the method comprises the following steps: the bonding method is one of gluing, ultrasonic bonding, thermal bonding or sewing, wherein glutinous rice glue is used in the gluing; the closure is one of ultrasonic bonding or stitching.
4. The method for preparing a wheat seeding strip according to claim 1, wherein the method comprises the following steps: and S3, changing the posture of the wheat seeds which do not fall into the embedding unit in a mode of vibrating the seed tray, so that the wheat seeds fall into the embedding unit.
5. The method for preparing a wheat seeding strip according to claim 1, wherein the method comprises the following steps: the embedding unit is of a semi-ellipsoid structure.
6. The method for preparing wheat seeding belt according to claim 5, wherein the method comprises the following steps: the determination method of the geometrical characteristics of the embedding unit comprises the following steps:
measuring the geometric characteristics of the wheat seeds and establishing a virtual model of the seeds, wherein the geometric characteristics comprise length, width and thickness;
adding a compensation value according to the virtual model, and amplifying according to an unequal ratio to establish a theoretical embedding model;
and splitting the theoretical embedding model along the length direction to form two semi-ellipsoids with the same size, wherein the length, the width and the depth of each semi-ellipsoid are consistent with those of the embedding unit.
7. The method for preparing a wheat seeding strip according to claim 1, wherein the method comprises the following steps: the film forming agent is a mixture of brown algae oligosaccharide and water, wherein 1-10 g of brown algae oligosaccharide is added into each liter of water.
8. A wheat seeding belt prepared based on the wheat seeding belt preparation method of claim 1, which is characterized in that: the wheat seeding belt is of a long strip structure, a plurality of recesses are symmetrically formed in two long edges of the long strip structure, the recesses are arranged at equal intervals, the long strip structure is symmetrically bent along the width direction, the recesses on one side of a bent opening are combined to form an embedding unit, the bent long strip structure is bonded, the edge of the embedding unit is sealed, and a semi-surrounding structure is formed; the surface of the recess is provided with a plurality of through holes which are used for communicating the embedding unit with the outside; wheat seeds are adhered in the embedding unit by a film forming agent.
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| US4786550A (en) * | 1985-05-06 | 1988-11-22 | Kimberly-Clark Corporation | Meltblown and coform materials having application as seed beds |
| CN207733207U (en) * | 2018-01-11 | 2018-08-17 | 北京中农富通园艺有限公司 | A kind of garlic orientation sowing paper tape |
| CN110663311A (en) * | 2019-11-15 | 2020-01-10 | 山东农泰农业科技有限公司 | Seeding belt for quality ratio test, seeding belt disc and manufacturing method of seeding belt disc |
| CN112335372A (en) * | 2020-10-23 | 2021-02-09 | 海南大学 | Seed film for quickly sowing and raising seedlings |
| CN215269737U (en) * | 2021-07-22 | 2021-12-24 | 光泽县富民蔬菜专业合作社 | Crop cultivation seedling raising device convenient for seedling removal |
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