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Ecological degradable mulching film used for corn in the Heilongjiang area

A technology for degrading mulch film and ecology, applied in the direction of plant protection cover, etc., can solve the problems of insufficient water retention and production increase, low production cost of degradable film, complicated synthesis process, etc., and achieves remarkable effect of temperature increase and moisture preservation, ecological and economic benefits. , the effect of improving physical properties

Inactive Publication Date: 2019-05-21
山东天壮环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the photodegradable film has a copolymerization type and an additive type, which are mainly degraded by the photolysis of chromophoric groups such as carbonyl groups on the polymer or the dehydrogenation reaction that occurs after adding a photosensitizer to absorb light with a wavelength of 300nm. The production cost of this type of degradable film Low, but the maintenance time is short, and the effect of water retention and production increase cannot be fully exerted, and it cannot be completely degraded in farmland; photo / biodegradable film is a plastic with photosensitizer and biological additives added, which can be completely degraded into small particles or powder, but The synthesis process of photo / biodegradable film is complicated, so the production cost is high
Biodegradable mulch has the advantage of being completely degradable, but it also has the disadvantages of difficult processing, poor mechanical properties and high cost

Method used

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  • Ecological degradable mulching film used for corn in the Heilongjiang area
  • Ecological degradable mulching film used for corn in the Heilongjiang area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The processing equipment is produced by Shandong Laiwu Jingrui Plastic Machinery Co., Ltd., and the screw diameter is 45mm.

[0028] The raw materials used are low-density linear polyethylene (LLDPE) (Qilu Petrochemical 7042, 50%; Canadian Nova Chemical 0218D, 50%), with a mass fraction of 96%, and degradable masterbatch EBP-1504 (Shandong Tianzhuang Environmental Protection Technology Co., Ltd.), The mass fraction is 4%.

[0029] Process conditions:

[0030] Fuselage temperature: Zone 1 140°C, Zone 2 160°C, Zone 3 170°C, Zone 4 180°C, Zone 5 180°C, Head 175°C. Host speed: 37 rpm.

[0031] Product specifications: thickness 0.008mm, width 700mm.

[0032] Plant corn in the Heilongjiang area according to the method described above, the results can be found in figure 1 , figure 2 , Table 1 and Table 2, figure 1 The photo of the growth and development of corn provided by Example 1 of the present invention, figure 2 The photos of the degradation of the plastic film i...

Embodiment 2

[0034] The processing equipment is produced by Shandong Laiwu Jingrui Plastic Machinery Co., Ltd., and the screw diameter is 45mm.

[0035] The raw materials used are low-density linear polyethylene (LLDPE) (Qilu Petrochemical 7042, 50%; Canadian Nova Chemicals 0218D, 50%), with a mass fraction of 98%, degradable masterbatch EBP-1504 (Shandong Tianzhuang Environmental Protection Technology Co., Ltd.), The mass fraction is 2%.

[0036] Process conditions:

[0037] Fuselage temperature: Zone 1 140°C, Zone 2 155°C, Zone 3 165°C, Zone 4 175°C, Zone 5 180°C, Head 170°C. Host speed: 40 rpm.

[0038] Product specifications: thickness 0.080mm, width 700mm.

[0039] Corn was planted in Heilongjiang according to the method described above. The results are shown in Table 1 and Table 2. Table 1 is the evaluation of plastic film degradation performance, and Table 2 is the evaluation of corn growth and yield.

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Abstract

Ecological degradable mulching film used for corn in the Heilongjiang area is provided, including 94-99 wt% of polyethylene and 1-6 wt% of ecological degradable masterbatch EBP-1504. According to climatic features that temperature during corn growth and development in the Heilongjiang area is low and accumulated temperature is insufficient, and by combining a corn planting mode in Heilongjiang andrequirements on accumulated temperature and water for corn growth and development, a proper amount of the ecological degradable masterbatch EBP-1504 is added into LLDPE7042 and LLDPE0218D to controlthe lasting period of the mulching film, so as to meet requirements on corn growth and development in the Heilongjiang area. The mulching film has significant temperature increasing and soil moistureconservation effects and can effectively prevent low-temperature cold damage and frost damage. The mulching film when compared with cultivation in open air can shorten the growth period by 5-7 days and increase the yield by 10-14%. After corn is harvested, residual film can be completely degraded so that the residual film does not need to be picked up. Ecological benefit and economic benefit of the method are significant.

Description

technical field [0001] The invention belongs to the technical field of degradable plastics, and in particular relates to an ecologically degradable mulch film for corn in Heilongjiang area. Background technique [0002] Heilongjiang Province is one of the main corn producing areas in my country. In 2016, the province's total corn production was 31.274 million tons, and the corn planting area reached 78.26 million mu. Heilongjiang's corn planting area accounts for 14.2% of the national corn planting area, and it is the province with the largest corn planting area and output in the country. [0003] Plastic film mulching technology has been popularized and used in Heilongjiang Province since the 1990s. Due to its functions of increasing ground temperature, water conservation, moisture conservation, weed control, and production increase, more and more crops are planted with plastic film, and plastic film brings economic benefits to agricultural production. At the same time, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08J5/18C08J3/22A01G13/02
Inventor 王丽红明照岳朱昆仑
Owner 山东天壮环保科技有限公司
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