CN110557940A - Soil covering material with structural layer - Google Patents
Soil covering material with structural layer Download PDFInfo
- Publication number
- CN110557940A CN110557940A CN201880019759.0A CN201880019759A CN110557940A CN 110557940 A CN110557940 A CN 110557940A CN 201880019759 A CN201880019759 A CN 201880019759A CN 110557940 A CN110557940 A CN 110557940A
- Authority
- CN
- China
- Prior art keywords
- covering material
- soil covering
- structural layer
- soil
- pulp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Laminated Bodies (AREA)
- Protection Of Plants (AREA)
Abstract
A soil covering material having sheet-like structural layers, comprising at least three structural layers, namely at least one structural layer having a composition of sludge from a pulp manufacturing process or pulp sludge from a paper making process; and at least two further layers having components of pulp (recycled pulp). Use of a soil covering material having a structural layer for covering soil and/or material floors for growing seedlings or plants.
Description
Technical Field
Chemistry and materials science related to soil covering materials with structural layers
Background
the use of soil covering materials in agriculture is the process of covering soil with materials to improve soil properties. There are several types of materials, including those classified according to the type of material and in the form of cover sheets, including stone, cobblestone, straw, microplasmic borneol (dipteropatus tubericus) leaves, plastic, asphaltic paper, and kraft paper. When covered with soil, better soil properties can be seen. These include increasing organic matter to prevent soil erosion of the surface, controlling weeds on the soil surface, and the like.
In addition, at present, plastics have been increasingly used as soil covering materials for growing various plants. The use of such soil covering plastics is considered to be a white revolution, which has led to the recognition that less water is used and the yield is increased. This is because water is not easily evaporated from the soil. In contrast, it was found that there are environmental problems with the plastics residues left in the farm after the use of soil-covering plastics contaminating the soil and affecting the water and nutrient circulation in the soil. Plastics have an effect on the water uptake of the soil and reduce the rate of water penetration. These result in reduced growth of the plant and plant root system. In addition, the plastic residue also has the effect of increasing the salinity of the soil. Polyethylene plastics, when decomposed, produce hazardous chemicals such as phthalates, di (2-ethylhexyl) phthalate, aldehydes and ketones. Therefore, in order to reduce the long-term impact of agricultural areas, it is necessary to eliminate used plastics from farms. This elimination will also result in costs in the process.
Therefore, solutions to the problem in using plastics for soil coverage have been developed by utilizing alternative materials from nature such as straw or micro-tumor borneol leaves that can partially solve the problem. However, there are other effects to use such soil covering materials. These effects include the problem that straw can attract insects and diseases when used. Furthermore, if grass seeds are attached to these materials, they grow into weeds. In the case of using the midget borneol leaf, it was found that there were problems in terms of insufficient supply and high cost. When the growing season is over, the problem of no decomposition of the material is found. Therefore, it is necessary to hire labor to remove material from the planting area, and this increases production costs. In addition, the small tumor borneol myrcia can release toxic substances to the environment for a long time.
The prior art, in particular patents, disclose soil covering materials according to the following examples.
EP1875798a1 discloses soil covering materials made of cellulose fibres coated with wax or acrylic resin. Waxes, such as paraffin wax, have water resistance, and acrylic resins, such as polyethylene, are colored binders.
US6293045B1 discloses the preparation of a soil covering material comprising decomposable natural fibers, such as cellulose fibers, cotton fibers or protein fibers. The substance or material used to make the foam is used with a binder to provide porosity and good air and water ventilation to the soil covering material and still prevent weed growth due to sunlight.
CN201221702U discloses a soil covering paper with paper as the main structure and a surface coated with grafted starch with heat protecting properties. The soil covering paper comprises three layers, namely 1) a pulp layer, 2) a coating substance layer for protection against the influence of heat rays (thermal insulation coating) consisting of a mixture of flour, additives and a powder from straw having a size of 75 to 106 μm, and 3) a coating substance layer.
US2013009523a1 discloses a soil covering paper sheet having multiple layers. The sheet material has a core structure, such as paper dust attached to upper and lower structures. Other materials such as paper sheets, plastic sheets, or knitted and woven sheets may be used. Additives may also be used as binders. These include flour, glue or polyvinyl alcohol, as well as other special substances, such as fertilizers or pesticides.
CN102599030B discloses that plastic films with a sludge content in the range of 10-80% are specially treated. This increases water retention, heat protection and nutrient release. This covers the preparation process, the type of plastic, the plastic composition, the mixtures and various additives as well as films with natural material constituents such as fibers or flour.
JP6062680A discloses a sheet having a layered structure which has a wood pulp component and an opaque carbon black composition and other substances such as a water-insoluble or binder and a chitosan layer for covering agricultural plant soil, and can be naturally decomposed.
however, due to the above problems, a soil covering material having a structural layer has been invented and developed. These developments provide the ability to control the rate of decomposition and soil temperature appropriate for a variety of plants. The paper type soil covering material has a property of covering soil to prevent weeds. When exposed to sunlight, heat is not accumulated, and the temperature of the soil covering material surface, the soil surface, and under the soil can be lowered. Soil with appropriate moisture content can be obtained based on a porous structure with water retention capacity and appropriate heat transfer from the soil. In addition, it can be further improved in quality so that it can be used for more than 6 months and then decomposed into organic substances in the soil without residues that are considered to be polluting to the environment.
Disclosure of Invention
The invention relates to a soil covering material having sheet-like structural layers, comprising at least three structural layers, namely at least one structural layer having a composition of sludge from a pulp manufacturing process or pulp sludge from a paper manufacturing process and at least two further layers having a composition of recycled pulp. These are made stiffer by bonding between the layers using a bonding material.
The invention also relates to increasing the strength of a soil covering material having a structural layer by using a strength enhancing additive. This is to prevent deterioration and to increase the stability of the soil covering material having a structural layer, thereby extending the time during which the material can be used.
An object of the present invention is to provide a soil covering material having a structural layer made of pulp sludge from a pulp manufacturing process or pulp sludge from a paper making process and recycled pulp. Such materials have been developed and have several advantages, including
-can be decomposed naturally,
-decomposition and conversion into organic substances and nutrients in the soil,
No residual substances that could lead to environmental pollution are left,
To extend the time the covering material can be used, so that it is not necessary to change the covering material frequently, thereby reducing the planting costs,
Increase the number of premium products required by the market.
Drawings
Fig. 1 shows the rate of decomposition of the soil cover material in a strawberry farm, where (a) sample T1 is a soil cover material with a structural layer according to the present invention (b) sample T2 is a soil cover material with a layer according to 2, 3 and 4 month test time.
Detailed Description
More clear details relating to the present invention will now be described.
The invention discloses a soil covering material with sheet structure layers, which is characterized in that the sheet structure layers comprise at least three structure layers, namely
At least one structural layer having the composition of pulp sludge from a pulp manufacturing process or pulp sludge from a paper making process, and having a structure similar to pulp and being readily decomposable by microorganisms. Thus, it is used as a layer to control the rate of decomposition of a soil covering material having a structural layer.
-at least two further layers having components of recycled pulp, the recycled pulp being the main component for maintaining the shape of the sheet of soil covering material and having an opacity suitable for weed control.
According to the invention, the soil covering material with a structural layer further comprises a binding material for interlayer binding, wherein the binding material for interlayer binding is selected from natural starch, cationic starch, amphoteric starch, polyvinyl alcohol or a combination of at least two thereof.
According to the present invention, the soil covering material having the structure layer further comprises a strength-enhancing substance for increasing the stability of the soil covering material having the structure layer when it is wet or when water is sprayed during planting of seedlings, and preventing the soil covering material having the structure layer from deteriorating when it is soaked. The strength-enhancing additive is selected from urea-formaldehyde, melamine-formaldehyde, glyoxal-polyacrylamide copolymer, epoxidized polyamide, polyamide epichlorohydrin, or a combination of at least two thereof.
According to the invention, the soil covering material with a structural layer has a suitable total weight in the range of 120-400 grams per square meter and a suitable weight per layer is at least 40 grams per square meter.
the recycled pulp according to the present invention is selected from Old Corrugated Containers (OCC), boxboard cuts (BBC), Old Newspapers (ONP), over-issued newspapers (OIN), white newspapers (WBN), or a combination of at least two thereof.
According to the invention, the method for manufacturing the soil covering material with the structural layer comprises the following steps:
a. The preparation of the recycled paper pulp,
b. The preparation of pulp sludge from a pulp manufacturing process or pulp sludge from a paper making process,
c. Diluting the regenerated paper pulp to obtain the regenerated paper pulp,
d. Diluting pulp sludge from a pulp manufacturing process or pulp sludge from a paper making process, and
e. Forming a soil covering material having a structural layer comprising at least three layers; passing the diluted recycled pulp and pulp sludge from the pulp manufacturing process or pulp sludge from the paper making process through a screen (wire/wire mesh), wherein the passing starts in sequence from a layer of diluted recycled pulp, a layer of diluted pulp sludge from the pulp manufacturing process or paper making process and a layer of diluted recycled pulp, wherein each layer is bonded by a bonding material; pressed and dried to remove moisture.
Steps a and b of the method of manufacturing a soil cover sheet with a structural layer according to the invention further comprise a mixture of strength enhancing substances.
For applications according to the invention where a soil covering material with a structural layer covers the soil and/or material floor used for planting seedlings or plants, a suitable coverage area is the area around the base of the seedling or plant. This is to prevent weeds, lower the temperature of the soil covering material surface, soil surface and soil subsurface, and provide the water retention capacity and heat transfer of the soil. Therefore, the soil contains moisture and has a temperature suitable for plant roots, seedlings or plant growth and allows better nutrient absorption, resulting in higher productivity and the ability to control the decomposition rate according to the growth time of each seedling or plant. Suitable seedlings or plants include eucalyptus, strawberry, warm fruit plants and cucurbits.
According to the details explained above, the soil covering material according to the present invention includes the components, the amounts of the components, and various details as described above. However, the soil covering material having a structural layer according to the present invention is not limited to the above-described components, amounts of the components, and various details, and may be adjusted or modified and still be considered to fall within the scope and concept of the present invention.
The invention will be further described by way of examples. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended.
Sample (I)
1. Preparation of soil covering material sample with structural layer
Sample T1: the soil covering material with a structural layer according to the invention comprises
-a first and a third layer having a composition originating from Old Newspaper (ONP) in a proportion of 71.25% of the total weight of the soil covering material with structural layers,
-the second layer has a composition of pulp sludge from the pulp making process or pulp sludge from the paper making process in a proportion of 23.75% of the total weight of the soil covering material with the structural layer, and
-5% strength enhancing substance by total weight of the soil covering material with the structural layer.
Sample T2 is a soil cover material with a single layer made of a mixture of Old Newspaper (ONP), pulp sludge from a pulp making process or pulp sludge from a paper making process, and wet strength enhancing substances in the same proportions as T1.
2. physical properties of soil covering materials with structural layers
a sample of soil covering material having a structural layer according to the invention is used for physical testing, comprising
according to ISO 536: 2012 basis weight
According to ISO 534: 2011 thickness
According to ISO 534: 2011 density
Tensile Strength according to ISO 1924-2:2008
Drawing according to ISO 1924-2:2008
TEA tensile energy absorption according to ISO 1924-2:2008
Tear index according to ISO 1974:2012
tensile stiffness according to ISO 1924-2:2008
TABLE 1 physical Properties of soil covering materials with structural layers
From the results in table 1, it is seen that sample T1 tends to have higher mechanical strength when compared to sample T2 in both dry and wet tests.
3. Prevention of weed growth around the base of seedlings
The evaluation of the ability to prevent weed growth in strawberry plantations was based on the evaluation in plantations of 1 × 20 square meters size during 1 to 4 months of planting.
Table 2 shows the weed growth area of the planted area
The results in table 2 show that there is a difference in the efficiency of preventing weeds of 5-10% in terms of area and disintegration time. As the T1 mulch paper slowly disintegrated, the grass grew less, so it could be used to cover longer than the farm of sample T2.
Decomposition of the soil cover material in the strawberry field during 4.4 months.
The soil covering material having a structural layer according to the present invention contains natural ingredients that are environmentally friendly and thus may be decomposed after a certain time. However, in actual practice, the time of decomposition needs to be adapted to the growing period of the various plants. This is to make the soil covering material with the structural layer resistant to weather conditions and growing environments. Thus, the material does not need to be replaced often. Frequent replacement results in higher planting costs and waste. The decomposition rate of the soil covering material with a structural layer according to the present invention was examined. The test results are shown in table 3.
TABLE 3 decomposition rates of soil covering materials with structural layers in strawberry plantations
According to the test results of table 3 and fig. 1, it was found that the sample T1 has a lower decomposition rate than the sample T2, and thus the sample T1 can be used to cover the planting soil for a longer period of time.
5. Comparison with other soil covering materials
in addition to the tests of various properties of the soil covering material with a structural layer described above, the results of other comparative tests related to other soil covering materials currently in use are shown in table 4.
Table 4: comparison with other soil cover materials in strawberry growing areas during 4 months
As can be seen from the comparison results in table 4, the strawberry products obtained using the soil covering material with the structural layer are better than the products obtained using the soil covering plastic material, particularly with respect to the number of products without defects. The use of a soil covering material with a structural layer produces over 80% of the total product without defects. These non-defective products can be sold at a better price, thereby significantly increasing the income of farmers or strawberry growers.
Claims (10)
1. Soil covering material with sheet-like structural layers, comprising at least three structural layers, i.e.
At least one structural layer having a composition of pulp sludge from a pulp manufacturing process or pulp sludge from a paper making process; and
At least two other layers having components of recycled pulp.
2. The soil covering material with a structural layer as claimed in claim 1, wherein the soil covering material with a structural layer further comprises an adhesive material for interlayer adhesion.
3. The soil covering material with a structural layer according to claim 2, wherein the binding material for interlayer adhesion is selected from natural starch, cationic starch, amphoteric starch, polyvinyl alcohol or a combination of at least two thereof.
4. the soil covering material with a structural layer as recited in claim 1, wherein the soil covering material with a structural layer further comprises a strength enhancing additive.
5. The soil covering material with a structural layer according to claim 4, wherein the strength-enhancing additive is selected from urea-formaldehyde, melamine-formaldehyde, glyoxal-polyacrylamide copolymer, epoxidized polyamide, polyamide epichlorohydrin or a combination of at least two thereof.
6. The soil covering material with a structural layer as claimed in any one of claims 1 to 5, wherein the soil covering material with a structural layer has a suitable total weight in the range of 120 and 400 g/m.
7. The soil covering material with a structural layer as claimed in any one of claims 1 to 5 wherein the suitable weight of each layer in the soil covering material with a structural layer is at least 40 grams per square metre.
8. The structured soil covering material according to claim 1, wherein the recycled pulp is selected from Old Corrugated Containers (OCC), boxboard cuts (BBC), Old Newspapers (ONP), over-issued newspapers (OIN), white newspapers (WBN), or a combination of at least two thereof.
9. use of a soil covering material having a structural layer according to any preceding claim for covering a soil and/or material floor for growing seedlings or plants, wherein the suitable area of coverage is the area around the base of a seedling or plant.
10. Use of a soil covering material having a structural layer according to claim 9, wherein suitable seedlings or plants include eucalyptus, strawberry, warm fruit plants and cucurbits.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TH1703002391 | 2017-03-29 | ||
| TH1703002391U TH14843C3 (en) | 2017-03-29 | Structural layer mulch material | |
| PCT/TH2018/000011 WO2018182543A2 (en) | 2017-03-29 | 2018-03-26 | Soil covering material having structural layers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110557940A true CN110557940A (en) | 2019-12-10 |
Family
ID=63678313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880019759.0A Pending CN110557940A (en) | 2017-03-29 | 2018-03-26 | Soil covering material with structural layer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110557940A (en) |
| WO (1) | WO2018182543A2 (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2558035A1 (en) * | 1983-09-01 | 1985-07-19 | Jednotne Rolnicke Druzstvo | Sprayable soil mulching compsn. |
| US5463830A (en) * | 1991-12-16 | 1995-11-07 | Wetenschappelijk En Technisch Centrum Voor Het Bouwbedrijf | Vegetation-inhibiting product for young plantings |
| CN1284974A (en) * | 1998-02-02 | 2001-02-21 | 级联多重处理公司 | Biodegradable and biocompatible agricultural mulch and method for preparing same |
| CN1339553A (en) * | 2001-09-28 | 2002-03-13 | 辛民昌 | Method of producing paper mulch for improving soil |
| CN1451066A (en) * | 2000-03-31 | 2003-10-22 | 永丰余造纸股份有限公司 | A nulti-functional paper and a method of making the same |
| CN1462296A (en) * | 2001-05-22 | 2003-12-17 | 大赛璐化学工业株式会社 | Biodegradable resin composition with controlled biodegradation rate film and agricutlural mulch film |
| CN1616597A (en) * | 2003-11-12 | 2005-05-18 | 桦甸市裕丰泥炭生物工程有限责任公司 | Environment protection mulch film |
| JP2007195438A (en) * | 2006-01-25 | 2007-08-09 | Kohjin Co Ltd | Mulching sheet |
| CN203262126U (en) * | 2013-06-05 | 2013-11-06 | 卢文祥 | Agricultural weeding paper |
| CN103435986A (en) * | 2013-08-30 | 2013-12-11 | 华南农业大学 | Method for preparing degradable mulching film from excess activated sludge and mulching film |
| CN103858717A (en) * | 2014-03-21 | 2014-06-18 | 宋志祥 | Multifunctional biological degradation mulching film and preparation method thereof |
| CN105178094A (en) * | 2015-06-17 | 2015-12-23 | 华南理工大学 | Agricultural degradable thermal-insulation mulch film manufacturing method |
| CN105860991A (en) * | 2016-04-19 | 2016-08-17 | 刘敏 | Agricultural liquid mulching film and production method thereof |
| CN106012689A (en) * | 2016-04-27 | 2016-10-12 | 新疆瑞新生物科技开发有限公司 | Paper-based mulching film and manufacturing method thereof |
| US20160340582A1 (en) * | 2002-10-15 | 2016-11-24 | Michael Dennis Krysiak | Soil stabilizer carrier |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100282260B1 (en) * | 1998-08-27 | 2001-02-15 | 조옥현 | Mulching material |
| KR20010078985A (en) * | 2001-05-30 | 2001-08-22 | 최재승 | The make mulching by old paper |
| AU2010332378A1 (en) * | 2009-12-16 | 2012-08-02 | Ecocover International Limited | Paper web assemblies and their uses |
| CN102337138A (en) * | 2011-05-27 | 2012-02-01 | 刘长福 | Biodegradable liquid mulch film produced from papermaking waste liquid, and production method thereof |
| KR101435885B1 (en) * | 2014-02-21 | 2014-09-01 | 충남대학교산학협력단 | Manufacture of environment-friendly mulching paper with inorganic material |
| JP6637259B2 (en) * | 2015-06-04 | 2020-01-29 | 大王製紙株式会社 | Agricultural sheet |
| KR101713522B1 (en) * | 2016-09-09 | 2017-03-07 | 박승찬 | Organic coatings biodegradable korea paper mulching film |
-
2018
- 2018-03-26 CN CN201880019759.0A patent/CN110557940A/en active Pending
- 2018-03-26 WO PCT/TH2018/000011 patent/WO2018182543A2/en active Application Filing
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2558035A1 (en) * | 1983-09-01 | 1985-07-19 | Jednotne Rolnicke Druzstvo | Sprayable soil mulching compsn. |
| US5463830A (en) * | 1991-12-16 | 1995-11-07 | Wetenschappelijk En Technisch Centrum Voor Het Bouwbedrijf | Vegetation-inhibiting product for young plantings |
| CN1284974A (en) * | 1998-02-02 | 2001-02-21 | 级联多重处理公司 | Biodegradable and biocompatible agricultural mulch and method for preparing same |
| CN1451066A (en) * | 2000-03-31 | 2003-10-22 | 永丰余造纸股份有限公司 | A nulti-functional paper and a method of making the same |
| CN1462296A (en) * | 2001-05-22 | 2003-12-17 | 大赛璐化学工业株式会社 | Biodegradable resin composition with controlled biodegradation rate film and agricutlural mulch film |
| CN1339553A (en) * | 2001-09-28 | 2002-03-13 | 辛民昌 | Method of producing paper mulch for improving soil |
| US20160340582A1 (en) * | 2002-10-15 | 2016-11-24 | Michael Dennis Krysiak | Soil stabilizer carrier |
| CN1616597A (en) * | 2003-11-12 | 2005-05-18 | 桦甸市裕丰泥炭生物工程有限责任公司 | Environment protection mulch film |
| JP2007195438A (en) * | 2006-01-25 | 2007-08-09 | Kohjin Co Ltd | Mulching sheet |
| CN203262126U (en) * | 2013-06-05 | 2013-11-06 | 卢文祥 | Agricultural weeding paper |
| CN103435986A (en) * | 2013-08-30 | 2013-12-11 | 华南农业大学 | Method for preparing degradable mulching film from excess activated sludge and mulching film |
| CN103858717A (en) * | 2014-03-21 | 2014-06-18 | 宋志祥 | Multifunctional biological degradation mulching film and preparation method thereof |
| CN105178094A (en) * | 2015-06-17 | 2015-12-23 | 华南理工大学 | Agricultural degradable thermal-insulation mulch film manufacturing method |
| CN105860991A (en) * | 2016-04-19 | 2016-08-17 | 刘敏 | Agricultural liquid mulching film and production method thereof |
| CN106012689A (en) * | 2016-04-27 | 2016-10-12 | 新疆瑞新生物科技开发有限公司 | Paper-based mulching film and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 高玉杰 等: "纸基农用地膜的开发及应用", 《中国造纸》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018182543A3 (en) | 2019-03-21 |
| WO2018182543A2 (en) | 2018-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Haapala et al. | Feasibility of paper mulches in crop production—a review | |
| US20050246949A1 (en) | Biodegradable fibrous support for soil mulching | |
| US10701873B2 (en) | Growing medium structures based on Sphagnum moss and method for the manufacture thereof | |
| EP0332733B1 (en) | Substrate envelope for cultivating plants | |
| Sarkar et al. | Agriculture: Polymers in crop production mulch and fertilizer | |
| EP2667701B1 (en) | Ground-cover mulch and method for manufacturing it | |
| CN102668934A (en) | Organic mulching film manufactured by fibers of plant shell or branch and stem | |
| Brown | Polymers in agriculture and horticulture | |
| Li et al. | Research progress on preparation and field application of paper mulch | |
| EP3469888B1 (en) | Biodegradable mulching film | |
| Nechita | Use of recycled cellulose fibers to obtain sustainable products for bioeconomy applications | |
| EP1545187B1 (en) | Biodegradable fibrous support for soil mulching | |
| CN112457859A (en) | Degradable multi-entanglement soil repair material | |
| MX2007013587A (en) | Sheet for agricultural use. | |
| CN110557940A (en) | Soil covering material with structural layer | |
| KR101353884B1 (en) | Paper-made agricultural covering material | |
| EP1469122B1 (en) | Non-woody fiber mulching mat and production method thereof | |
| KR101553608B1 (en) | Production Process of Molded Product Containing Herbicidal Composition | |
| DE60305507T2 (en) | BIODEGRADABLE FIBER CARRIER FOR GROWING FLOORS | |
| KR102683989B1 (en) | Soil covering type eco-friendly mulching paper, manufacturing method for that and mulching method using that | |
| US20050235556A1 (en) | Biodegradable fibrous support for soil mulching | |
| KR102683994B1 (en) | Mulching paper having improved elongation and manufacturing method for that | |
| KR101415965B1 (en) | Mixed organic composition for afforestation of steep slope and method of slope afforestantion using thereof | |
| KR100691795B1 (en) | Method manufacturing and mulching-paper with environment protecting function | |
| JP2002291351A (en) | Agricultural multi-layer sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191210 |