CN213523249U

CN213523249U - Full-biodegradable mulching film beneficial to soil moisture preservation

Info

Publication number: CN213523249U
Application number: CN202022320987.9U
Authority: CN
Inventors: 王惠民; 魏勇; 宋体周
Original assignee: Changzhou Bailiji Biomaterial Science And Technology Co ltd
Current assignee: Changzhou Bailiji Biomaterial Science And Technology Co ltd
Priority date: 2020-10-17
Filing date: 2020-10-17
Publication date: 2021-06-25
Anticipated expiration: 2030-10-17

Abstract

The application relates to a full-biodegradable mulching film beneficial to soil moisture preservation, and relates to the field of mulching films, wherein a mulching film body is provided with a plurality of seedling emergence holes; the mulching film body comprises an upper film layer, a fiber layer and a lower film layer which are sequentially arranged from top to bottom; the two upper film layers are arranged at intervals along the width direction of the fiber layer; one opposite side of the two upper film layers and the upper end surface of the fiber layer are surrounded into an installation groove; a sponge strip is arranged in the mounting groove; the upper end surface of the upper film layer is provided with a transparent film layer; and a plurality of water seepage holes are formed in the position, above the sponge strip, on the transparent film layer. This application has the effect that improves the water conservation soil moisture conservation ability of plastic film.

Description

Full-biodegradable mulching film beneficial to soil moisture preservation

Technical Field

The application relates to the field of mulching films, in particular to a full-biodegradable mulching film beneficial to soil moisture preservation.

Background

Mulching film, i.e., ground covering film, is usually a transparent or black PE film, and also has green and silver films, and is used for ground covering to increase the temperature of soil, maintain the moisture of soil, maintain the soil structure, prevent pests from attacking crops and diseases caused by certain microorganisms, etc., and promote the growth of plants.

At present, chinese utility model patent with publication number CN201533521U discloses a special mulching film for mulching and planting crops, including criss-cross reinforcing ribs evenly distributed on the mulching film surface, the longitudinal reinforcing ribs and the transverse reinforcing ribs are combined with the mulching film, the longitudinal reinforcing ribs are respectively arranged on both sides of the mulching film, and the longitudinal reinforcing ribs and the transverse reinforcing ribs are connected into a whole.

In view of the above-mentioned related technologies, the inventor believes that the permeation speed of the mulching film is slow when the mulching film is used, and a large amount of moisture can be air-dried on the surface of the mulching film, which affects the moisture retention and preservation performance of the mulching film.

SUMMERY OF THE UTILITY MODEL

In order to improve the water conservation and soil moisture conservation ability of plastic film, the application provides a full biodegradable plastic film that does benefit to soil moisture conservation.

The application provides a do benefit to full biodegradable plastic film of soil moisture conservation adopts following technical scheme:

a full-biodegradable mulching film beneficial to soil moisture preservation comprises a mulching film body, wherein a plurality of seedling emergence holes are formed in the mulching film body; the mulching film body comprises an upper film layer, a fiber layer and a lower film layer which are sequentially arranged from top to bottom; the two upper film layers are arranged at intervals along the width direction of the fiber layer; one opposite side of the two upper film layers and the upper end surface of the fiber layer are surrounded into an installation groove; a sponge strip is arranged in the mounting groove; the upper end surface of the upper film layer is provided with a transparent film layer; and a plurality of water seepage holes are formed in the position, above the sponge strip, on the transparent film layer.

Through adopting above-mentioned technical scheme, set up the sponge strip between two last retes, can improve the water absorption capacity of plastic film body, be favorable to leading-in the fibre in situ with the rainwater on plastic film body surface fast, and then can lead-in the plastic film body below along the hole of emerging through the fibre layer, slowly permeate to the farmland soil of plastic film body cover by plastic film body upper surface in, improved the water conservation soil moisture conservation performance of plastic film body greatly. The transparent film layer covers on two upper film layers, which is beneficial to strengthening the integrity of the mulching film body.

Preferably, the seedling emergence holes are arranged at intervals along the length direction of the mulching film body, and the seedling emergence holes are arranged in two rows along the width direction of the mulching film body; a plurality of fixing holes arranged at intervals are formed in the transparent film layer and above the seedling holes; a plurality of the fixed holes are surrounded into an annular hole, and the circle center of the annular hole coincides with the circle center of the seedling emergence hole.

Through adopting above-mentioned technical scheme, after seedling growth a period, the transparent rete of seedling jack-up because the annular hole has been seted up on the transparent film and being located seedling hole, can be so that the transparent film is last and be located seedling hole department and tear to reduce the hindrance to seedling growth. The transparent film layer covers on the seedling hole, can improve the water-retaining property of the mulching film body, and the small holes in the transparent film layer are favorable for keeping the air permeability of the mulching film body.

Preferably, a strip-shaped hole is formed in the transparent film layer and positioned on the outer side of the annular hole; a plurality of strip-shaped holes are annularly distributed along the circle center of the seedling outlet hole; one end of the strip-shaped hole is communicated with one fixing hole in the annular hole.

Through adopting above-mentioned technical scheme, after bursting transparent rete after seedling grows, because bar hole and a fixed orifices intercommunication for the opening of transparent film can be bigger, thereby is favorable to the growth of seedling more.

Preferably, the fiber layer is formed by weaving a plurality of warp fibers and a plurality of weft fibers in a warp and weft manner; the warp fibers are polyvinyl alcohol fibers; the weft-wise fibers are polylactic acid fibers.

Through adopting above-mentioned technical scheme, the fibrous layer that the longitude and latitude was woven, structural strength is higher, is favorable to strengthening the holistic toughness of plastic film body for the plastic film body is difficult to be torn. The polyvinyl alcohol fibers and the polylactic acid fibers are degradable materials, and a large number of bacteria capable of degrading the polyvinyl alcohol fibers and the polylactic acid fibers exist in soil, so that the mulching film body can be degraded more quickly.

Preferably, the two sides of the mulching film body in the width direction are provided with degradation film layers; the thickness of the degradation film layer is consistent with that of the mulching film body.

Through adopting above-mentioned technical scheme, be the degradation rete with the both sides setting of plastic film body width direction, because general plastic film body width direction's the outside need bury in soil, set up the degradation rete in plastic film body width direction's both sides, even partly fail to be handled in soil burying underground, also can degrade by oneself in soil, can not cause the pollution to soil.

Preferably, the upper film layer is a weeding film layer.

Through adopting above-mentioned technical scheme, set the last rete to the weeding rete, be favorable to reducing the growth of weeds when the plastic film body covers on farmland soil.

Preferably, the lower film layer is a coating layer prepared by mixing polyvinyl alcohol, compound fertilizer and resin.

Through adopting above-mentioned technical scheme, lower rete and farmland soil direct contact, polyvinyl alcohol are degradable material, under the effect of bacterium and microorganism in soil for the rete can degrade down, thereby can slowly release the fertilizer and supply for the seedling, be favorable to the growth of seedling.

Preferably, the lower film layer is provided with a plurality of through grooves.

Through adopting above-mentioned technical scheme, set up a plurality of logical grooves on rete down, can improve the contact of soil and plastic film body for the degradation of rete down, and the setting that leads to the groove, fibrous layer and the soil contact of can being convenient for in the rainwater of plastic film body upper surface permeates soil, provide moisture for the growth of seedling.

In summary, the present application includes at least one of the following beneficial technical effects:

the sponge strips are arranged between the two upper film layers, so that the water absorption performance of the mulching film body can be improved, rainwater on the surface of the mulching film body can be quickly guided into the fiber layers, and then the rainwater can be guided into the lower part of the mulching film body along the seedling emergence holes through the fiber layers and slowly permeate into farmland soil covered by the mulching film body from the upper surface of the mulching film body, and the water retention and soil moisture preservation performance of the mulching film body is greatly improved;

after the seedlings grow for a period of time, the seedlings jack up the transparent film layer, and the annular holes are formed in the transparent film and positioned on the seedling emergence holes, so that the transparent film and the seedling emergence holes can be torn, and the obstruction to the growth of the seedlings is reduced;

lower rete and farmland soil direct contact, polyvinyl alcohol are degradable material, under the effect of bacterium and microorganism in soil for the lower rete can degrade, thereby can slowly release the fertilizer and supply for the seedling, be favorable to the growth of seedling.

Drawings

Fig. 1 is a schematic structural diagram of the whole of the embodiment of the present application.

Fig. 2 is a schematic structural diagram of a mulching film body according to an embodiment of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 1.

Description of reference numerals: 1. a mulching film body; 11. seedling holes are formed; 12. coating a film layer; 121. mounting grooves; 13. a fibrous layer; 131. a warp fiber; 132. weft fibers; 14. a lower film layer; 141. a through groove; 15. a sponge strip; 2. degrading the film layer; 3. a transparent film layer; 31. a water seepage hole; 32. a fixing hole; 33. and (4) strip-shaped holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a full-biodegradable mulching film beneficial to soil moisture preservation. Referring to fig. 1 and 2, a do benefit to full biodegradable plastic film of soil moisture conservation, including plastic film body 1 and degradation rete 2, plastic film body 1 lays in the planting region department of farmland soil, and has seted up a plurality of hole 11 of emerging on the plastic film body 1, and a plurality of hole 11 of emerging sets up along the length direction interval of plastic film body 1, and a plurality of hole 11 of emerging arranges into two rows along plastic film body 1 width direction. The degradable film layer 2 is formed on two sides of the width direction of the mulching film body 1 in a hot-pressing mode, and the length direction of the degradable film layer 2 is consistent with that of the mulching film body 1. The thickness of the degradation film layer 2 is consistent with that of the mulching film body 1. The degradation film layer 2 is buried under the soil, and can be degraded under the action of microorganisms in the soil.

Referring to fig. 2, the mulching film body 1 includes an upper film layer 12, a fiber layer 13 and a lower film layer 14, which are sequentially arranged from top to bottom. The upper film layer 12 is a weeding film layer, and the common mulching film added with the black master batch can shield sunlight and reduce the growth of weeds. The upper film layers 12 are provided at intervals in the width direction of the fiber layer 13. The fiber layer 13 is formed by weaving a plurality of warp fibers 131 and a plurality of weft fibers 132 in a warp and weft manner, the warp fibers 131 are polyvinyl alcohol fibers, and the weft fibers 132 are polylactic acid fibers. Lower rete 14 is the coating of making for polyvinyl alcohol, compound fertilizer and resin mixture, and polyvinyl alcohol is degradable material, and when plastic film body 1 covered on farmland soil, lower rete 14 and farmland soil direct contact under the effect of bacterium and microorganism in soil for lower rete 14 can degrade, thereby can slowly release the fertilizer and supply for the seedling. The lower film layer 14 is provided with a plurality of through grooves 141, so that the permeability of the mulching film body 1 can be improved.

Referring to fig. 1 and 2, the transparent film layer 3 is heat-pressed on the upper end surface of the upper film layer 12. The opposite sides of the two upper film layers 12 and the upper end surface of the fiber layer 13 are enclosed to form a mounting groove 121, and the transparent film layer 3 covers the mounting groove 121. Sponge strip 15 is fixed in the mounting groove 121 in an adhering manner, and the length direction of the sponge strip 15 is consistent with that of the mounting groove 121. The position that just is located sponge strip 15 top on the transparent rete 3 has seted up water seepage hole 31, and water seepage hole 31 has seted up a plurality ofly along the length direction of transparent film. The upper end surface of the sponge strip 15 is attached to the lower part of the transparent film layer 3.

Referring to fig. 2 and 3, the transparent film layer 3 is provided with a fixing hole 32 above the seedling hole 11. The fixed orifices 32 interval is provided with a plurality ofly, and a plurality of fixed orifices 32 that are located every hole of emerging 11 tops enclose and establish into the annular ring, and the centre of a circle of annular ring and the coincidence of the centre of a circle of hole of emerging 11, and the diameter of annular ring is less than the diameter of hole of emerging 11. On the transparent rete 3 and be located the outside of annular ring and seted up bar hole 33, bar hole 33 has a plurality ofly along the centre of a circle annular distribution of seedling hole 11, and one end in bar hole 33 and the annular ring hole 32 are linked together, and bar hole 33 keeps away from the one end of annular ring hole and the outside interval setting of seedling hole 11. On the transparent film layer 3 of the hole 11 top of emerging, a plurality of fixed orificess 32 that the interval set up can be broken by the bursting after the seedling grows, because the one end and the fixed orifices 32 intercommunication of bar hole 33 to can increase the opening of transparent film layer 3, be favorable to the growth of seedling.

The implementation principle of the full-biodegradable mulching film beneficial to soil moisture preservation in the embodiment of the application is as follows: the mulching film body 1 is covered on the soil needing to be planted through an artificial or mechanical film laminating machine, so that the degradable film layer 2 is buried in the soil, and the mulching film body 1 is fixed. The seedling hole 11 is aligned with the seedling planting position. After the seedling grows for a period of time, because transparent rete 3 is thinner, just be located play seedling hole 11 department on transparent rete 3 and seted up a plurality of fixed orificess 32 for the seedling can burst transparent rete 3 easily, thereby makes transparent rete 3 be located play seedling hole 11 department and forms great breach, the seedling growth of being convenient for. The rainwater slowly permeates into the fiber layer 13 through the water permeating groove, and then continuously permeates through the seedling outlet holes 11 and the through grooves 141 to supply water for the seedling to grow. After the seedling grows for a period of time, the lower membrane layer 14 located above the soil degrades so that the fertilizer in the lower membrane layer 14 can be supplied to the seedling growth.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a do benefit to full biodegradable plastic film of soil moisture conservation, includes plastic film body (1), its characterized in that: a plurality of seedling emergence holes (11) are formed in the mulching film body (1); the mulching film body (1) comprises an upper film layer (12), a fiber layer (13) and a lower film layer (14) which are sequentially arranged from top to bottom; the number of the upper film layers (12) is two, and the two upper film layers (12) are arranged at intervals along the width direction of the fiber layer (13); one opposite side of the two upper film layers (12) and the upper end surface of the fiber layer (13) are surrounded to form a mounting groove (121); a sponge strip (15) is arranged in the mounting groove (121); the upper end surface of the upper film layer (12) is provided with a transparent film layer (3); a plurality of water seepage holes (31) are formed in the position, located above the sponge strip (15), on the transparent film layer (3).

2. The full-biodegradable mulching film beneficial to soil moisture conservation as claimed in claim 1, wherein: the seedling holes (11) are arranged at intervals along the length direction of the mulching film body (1), and the seedling holes (11) are arranged in two rows along the width direction of the mulching film body (1); a plurality of fixing holes (32) arranged at intervals are formed in the transparent film layer (3) and above the seedling holes (11); a plurality of the fixing holes (32) are arranged in an annular hole in an enclosing mode, and the circle center of the annular hole coincides with the circle center of the seedling emergence hole (11).

3. The full-biodegradable mulching film beneficial to soil moisture conservation as claimed in claim 2, wherein: a strip-shaped hole (33) is formed in the transparent film layer (3) and positioned on the outer side of the annular hole; a plurality of strip-shaped holes (33) are annularly distributed along the circle center of the seedling outlet hole (11); one end of the strip-shaped hole (33) is communicated with one fixing hole (32) in the annular hole.

4. The full-biodegradable mulching film beneficial to soil moisture conservation as claimed in claim 1, wherein: the fiber layer (13) is formed by weaving a plurality of warp fibers (131) and a plurality of weft fibers (132) in a warp and weft manner; the warp fibers (131) are polyvinyl alcohol fibers; the weft fibers (132) are polylactic acid fibers.

5. The full-biodegradable mulching film beneficial to soil moisture conservation as claimed in claim 1, wherein: both sides of the mulching film body (1) in the width direction are provided with degradation film layers (2); the thickness of the degradation film layer (2) is consistent with that of the mulching film body (1).

6. The full-biodegradable mulching film beneficial to soil moisture conservation as claimed in claim 1, wherein: the upper film layer (12) is a weeding film layer.

7. The full-biodegradable mulching film beneficial to soil moisture conservation as claimed in claim 1, wherein: the lower film layer (14) is provided with a plurality of through grooves (141).