Covering film and plant cultivation method

A technology of covering film and planting bed, which is applied in the field of covering film and plant cultivation

Inactive Publication Date: 2017-06-27
BADONG FENGTAI AGRI SPECIALIZED COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in faster decomposition of organic matter in the soil and release of plant nutrients needed for crop growth

Method used

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  • Covering film and plant cultivation method
  • Covering film and plant cultivation method
  • Covering film and plant cultivation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] 50% 0.920 g / cc, 2MI LDPE / 34% 0.918 g / cc, 4MI LLDPE resin blend and 15% titanium dioxide and 1% Chimassorb 944 hindered amine light stabilizer were combined in a single layer blown film extruder. The film was drawn to a 0.5 mil gauge and cut into various lengths of 6"-28" width. A second film was made in a single flat extrusion flower extruder using 0.926 g / cc, 0.7 MI LDPE resin and 5.5% carbon black. The film was drawn down to 1.0 mil thickness and 66" width. The two films were bonded together to form a single layer composite structure with 6", 18", 24" and 28" wide reflective strip layers.

Embodiment 2

[0074]50% 0.925 g / cc, 0.9 MI LLDPE / 10% 0.941 g / cc, 6 MIHDPE / 34% 0.926 g / cc, 0.7 MILDPE resin blend and 6% carbon black concentrate were kneaded in extruder A. 60% 0.925g / cc, 0.9MI LLDPE / 5% 0.941g / cc, 6MI HDPE / 17% 0.925g / cc, 1.0MI LDPE resin blend with 15% titanium dioxide, 1% Tinuvin 622HALS stabilizer and 2% The benzophenone stabilizer was incorporated in extruder B. The A extruder mix and the B extruder mix were combined in a flow plate / feed block for encapsulation, resulting in different monolayer structures with white layer widths ranging from 20" to 28" wide. Films with 4 width strips were manufactured with 7 different widths as follows: 4" / 48", 4" / 54", 4" / 56", 4" / 60", 4" / 66", 4 ” / 68”, 18” / 48”, 18” / 54”, 18” / 56”, 18” / 60”, 18” / 66”, 18” / 68”, 24” / 60”, 24” / 66", 28" / 60", 28" / 66".

Embodiment 3

[0076] As a comparison, an opaque film with a full width reflective layer, such as described by Kitamura et al., was fabricated as follows:

[0077] A 53% 0.925 g / cc, 0.7MI LDPE / 31.5% 0.920 g / cc, 12MI LDPE resin blend and 13.5% = titanium oxide and 2% nickel (UV-1084) stabilizer were combined in extruder A. 85% 0.925g / cc, 0.7MI LDPE / 9% 0.920g / cc, 20MI LDPE resin blend and 6% carbon black were combined in Extruder B. The reflective layer of extruder A and the energy absorbing layer of extruder B were joined in a flow plate / feed block in conventional 40% / 60% parts and passed through a coat hanger type die. The extruded sheet was drawn to a 66" width 1.40 mil gauge.

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Abstract

The present invention provides an improved agricultural mulch film comprising energy absorbing and transmissive regions (opaque bottom surround) and at least one energy reflecting region (reflective central strip) arranged so that when the film is placed Creates a temperature differential while in the plant bed.

Description

[0001] Field of Invention [0002] The invention provides a mulch film and a plant cultivation method, the film can improve the circulation of water, the utilization of fertilizer and reduce the growth of weeds. [0003] Background of the Invention [0004] The plastic material used for the cover film is generally low density polyethylene, polyvinyl chloride, polybutene, or a copolymer of ethylene and vinyl acetate. Mulch controls the level of radiant heat, soil temperature and humidity, weed growth, pest infestation, soil compaction and carbon dioxide retention. [0005] Clear polyethylene retains heat more effectively than black or anthracite films; soil temperature can rise by 11°C (52°F) under clear film, but only 3.4-5.4°C (38.1-41.7°F) under black film ). The polymer membrane reduces the loss of radiant heat as the soil cools at night. Weed control has been reported in some cases due to solar heat from polyethylene mulch. [0006] Crop growth with mulch was reported t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G13/02A01G1/00B32B27/08B32B27/20B32B27/30B32B27/32
CPCA01G13/0275A01G22/00B32B27/08B32B27/20B32B27/30B32B27/304B32B27/32B32B2250/246B32B2264/108B32B2410/00
Inventor 周武成
Owner BADONG FENGTAI AGRI SPECIALIZED COOP
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