Application of biodegradable weeding mulching film in potato cultivation

A biodegradable and weed-killing mulch technology, which is applied in plant cultivation, application, cultivation, etc., can solve problems such as weed growth and environmental pollution on the border, and achieve the effects of saving costs, reducing production costs, and improving drug efficacy time

Active Publication Date: 2017-03-15
广东省科学院生物与医学工程研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By applying the biodegradable weed-killing film to potato cultivation, the present invention not only solves the problem of environmental pollution caused by the use of ordinary plastic film, but also saves the labor cost of manually removing the film and improves production efficiency. The addition of the agent is also a good solution to the problem of weeds on the border

Method used

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  • Application of biodegradable weeding mulching film in potato cultivation
  • Application of biodegradable weeding mulching film in potato cultivation
  • Application of biodegradable weeding mulching film in potato cultivation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Preparation of biodegradable herbicide masterbatch:

[0059] Mix acetochlor and polyoxyethylene lauryl ether for 3 minutes, and ultrasonically activate it at 100W for 10 minutes; then mix it with PBAT and glyceryl monostearate, stir and mix at 600rpm for 5 minutes, and the mixing temperature does not exceed 60°C, 110 Extrude and granulate at ~150°C to obtain herbicide masterbatches.

[0060] Wherein, the mass percent of each reactant is: PBAT 75%; acetochlor 20%; polyoxyethylene lauryl ether 2.5%; glyceryl monostearate 2.5%.

[0061] Preparation of biodegradable weeding mulch film:

[0062] Mix the biodegradable herbicide masterbatch with PLA and PBAT in a mixer for 3 minutes, and blow molding at 130-200°C to obtain a biodegradable herbicide mulch film.

[0063] Wherein, the mass percentage of each reactant is: 3% of biodegradable herbicide masterbatch; 20% of PLA; 77% of PBAT.

[0064] The melt index of PLA used is 3-5g / 10min; the melt index of PBAT used is 3-5g / 10m...

Embodiment 2

[0066] Preparation of biodegradable herbicide masterbatch:

[0067] Mix acetochlor with sorbitan laurate for 4 minutes, ultrasonically activate at 300W for 5 minutes; then mix with PBAT and propylene glycol fatty acid ester, stir and mix at 1200 rpm for 2 minutes, the mixing temperature does not exceed 60 ° C, 110 Extrude and granulate at ~150°C to obtain herbicide masterbatches.

[0068] Wherein, the mass percent of each reactant is: PBAT 75%; acetochlor 10%; sorbitan laurate 5%; propylene glycol fatty acid ester 10%.

[0069] Preparation of biodegradable weeding mulch film:

[0070] Mix the biodegradable herbicide masterbatch with PLA and PBAT in a mixer for 4 minutes, and blow molding at 130-200°C to obtain a biodegradable herbicide mulch film.

[0071] Wherein, the mass percentage of each reactant is: 10% of biodegradable herbicide masterbatch; 15% of PLA; 75% of PBAT.

[0072] The melt index of PLA used is 3-5g / 10min; the melt index of PBAT used is 3-5g / 10min.

Embodiment 3

[0074] Preparation of biodegradable herbicide masterbatch:

[0075] Mix acetochlor with polyoxyethylene (4EO) sorbitan monostearate for 5 minutes, ultrasonically activate at 500W for 20 minutes; then mix with PBAT and propylene glycol monostearate, stir and mix at 800rpm for 4 minutes , the mixing temperature does not exceed 60°C, extruding and granulating at 110-150°C to obtain the herbicide masterbatch.

[0076] Wherein, the mass percent of each reactant is: PBAT 25%; acetochlor 60%; polyoxyethylene (4EO) sorbitan monostearate 10%; propylene glycol monostearate 5%.

[0077] Preparation of biodegradable weeding mulch film:

[0078] Mix the biodegradable herbicide masterbatch with PLA and PBAT in a mixer for 5 minutes, blow molding at 130-200°C to obtain a biodegradable herbicide mulch film.

[0079] Wherein, the mass percentage of each reactant is: 30% of biodegradable herbicide masterbatch; 10% of PLA; 60% of PBAT.

[0080] The melt index of PLA used is 3-5g / 10min; the me...

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Abstract

The invention belongs to the technical field of potato cultivation, and discloses an application of a biodegradable weeding mulching film in potato cultivation. The mulching film comprises the following components in percentage by mass: 70-97% of biodegradable resin A and 3-30% of biodegradable herbicide master batches, wherein the biodegradable herbicide master batches are prepared by a method comprising the following steps: mixing 10-60% of a herbicide with 0.5-7% of a surfactant A, and performing ultrasonic activation; and mixing 25-75% of biodegradable resin B and 1-10% of a surfactant B at a high speed, and performing extrusion and granulation, thereby obtaining the herbicide master batches, wherein the mass ratio of the surfactant A (the hydrophilic-lipophilic balance value is 7-10) to the surfactant B (the hydrophilic-lipophilic balance value is 3-6) is (1:1)-(1:2). As the biodegradable weeding mulching film is used in potato cultivation, the problems that weeds can grow out from furrow surfaces and environment pollution can be caused by common plastics can be effectively prevented, and the labor cost can be lowered.

Description

technical field [0001] The invention belongs to the technical field of potato cultivation, in particular to the application of a biodegradable weeding film in potato cultivation. Background technique [0002] Potatoes are perennial herbs of the nightshade family with edible tubers. In 2015, China launched the strategy of turning potatoes into a staple food. It plans to expand the potato planting area according to local conditions without crowding out the three major staples, from the current 5.333 million hectares. 2 Expanded to 1000hm 2 . In the south, the use of idle rice fields in winter to grow potatoes has the advantages of improving land utilization and not competing with other crops for land, and the idle fields in the south in winter reach 0.07 billion hm 2 As much, the potential for expanding potato is great. [0003] At present, the cultivation technology of plastic film mulching is widely used in potato planting, which has the advantages of increasing ground t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L71/02C08K5/103C08K5/20C08J3/22C08J5/18A01G1/00A01G13/02
CPCA01G13/0275A01G22/00C08J3/226C08J5/18C08J2367/02C08J2467/04C08K2201/014C08L67/02C08L2201/06C08L2203/16C08L2205/025C08L2205/03C08L2205/035C08L2205/08C08L67/04C08L71/02C08K5/103C08K5/20
Inventor 张会平谢东黄瑶珠杨友军高旭华潘东英陈明周陈东城
Owner 广东省科学院生物与医学工程研究所
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