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Long-acting insect-expelling agricultural mulching film and preparation method thereof

An agricultural mulch film and long-acting technology, which is applied to the field of long-acting insect repellent agricultural mulch film and its preparation, can solve the problems of polluted crops, endanger human health, and soil chemical residues, etc., and achieve wide insect repellent spectrum and good effect of avoiding Effect

Active Publication Date: 2020-05-29
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional control method is to use chemical pesticides, but the use of pesticides has brought a large amount of chemical residues in the soil, seriously polluting the environment and crops, and endangering human health
In the 1980s, a large number of studies on plant-derived root-knot nematode active agents were carried out in foreign countries. In the early 1990s, my country systematically researched and reported plant-derived agents with nematicidal activity. However, there is no one that can effectively Environmentally friendly and chemical residue-free drugs for the prevention and control of root-knot nematodes

Method used

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  • Long-acting insect-expelling agricultural mulching film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method for long-acting insect repellent agricultural mulch film, comprising the steps of:

[0024] 1. Add 100ml of bamboo vinegar to 311g of calcium oxide, pour 15ml of alcohol, and distill under reduced pressure at 95°C. The temperature of the condensate used is -25°C, and A liquid is recovered;

[0025] 2. After pulverizing 110g betel nut fruit and 230g camphor fruit, add 100ml water, 260W ultrasonic leaching at 97°C for 22h, to obtain liquid B;

[0026] 3. Add 1g of benzoin to 14ml of liquid A, stir at 60°C for 6 hours and then filter, slowly add 51ml of liquid B to the filtrate at 2ml / min, stir and mix to prepare a slurry;

[0027] 4. The slurry prepared in step 3 and polyethylene masterbatch are mixed and blown at a weight ratio of 1:50 to make a long-lasting insect repellent agricultural mulch film.

Embodiment 2

[0029] A preparation method for long-acting insect repellent agricultural mulch film, comprising the steps of:

[0030] 1. Add 100ml of bamboo vinegar to 300g of calcium oxide, pour 10ml of alcohol, and distill under reduced pressure at 80°C. The temperature of the condensate used is -30°C, and A liquid is recovered;

[0031] 2. After pulverizing 100g of betel nut and 200g of camphor fruit, add 100ml of water, leaching with 200W ultrasonic at 80°C for 12h to obtain liquid B;

[0032] 3. Add 1g of benzoin to 10ml of liquid A, stir at 50°C for 4 hours and then filter, slowly add 50ml of liquid B to the filtrate at 1ml / min, stir and mix to prepare a slurry;

[0033] 4. The slurry prepared in step 3 and polyethylene masterbatch are mixed and blown at a weight ratio of 1:10 to make a long-lasting insect repellent agricultural mulch film.

Embodiment 3

[0035] A preparation method for long-acting insect repellent agricultural mulch film, comprising the steps of:

[0036] 1. Add 100ml of bamboo vinegar to 320g of calcium oxide, pour 20ml of alcohol, and distill under reduced pressure at 100°C. The temperature of the condensate used is -10°C, and A liquid is recovered;

[0037] 2. After crushing 120g of betel nut and 240g of camphor fruit, add 100ml of water, leaching with 280W ultrasonic at 100°C for 24h to obtain liquid B;

[0038] 3. Add 1g of benzoin to 20ml of liquid A, stir at 70°C for 8 hours and then filter, slowly add 60ml of liquid B to the filtrate at 3ml / min, stir and mix to prepare a slurry;

[0039] 4. The slurry prepared in step 3 and polyethylene masterbatch are mixed and blown at a weight ratio of 1:100 to make a long-lasting insect repellent agricultural mulch film.

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Abstract

The invention belongs to the field of agricultural products, and discloses a long-acting insect-expelling agricultural mulching film and a preparation method thereof. The preparation method comprisesthe following steps: adding calcium oxide and alcohol into bamboo vinegar, and performing distilling and recycling to obtain a solution A; adding water into the crushed areca nuts and cinnamomum camphora fruits, and carrying out ultrasonic extraction to obtain a solution B; adding benzoin into the solution A, performing dissolving then filtering, slowly adding the solution B, and performing stirring and mixing to obtain slurry; and adding the slurry into polyethylene master batch, and performing blow molding to obtain the long-acting insect-expelling agricultural mulching film. The agricultural mulching film prepared by the invention has the effects of improving the soil temperature, maintaining the soil moisture and maintaining the soil structure of a common mulching film, and can effectively repel crop pests for a long time.

Description

technical field [0001] The invention relates to the field of agricultural products, in particular to a long-acting insect repellent agricultural mulch film and a preparation method thereof. Background technique [0002] Plastic film mulching is a mature agricultural cultivation technology, which can effectively increase and prolong the growth period of crops by retaining water and fertilizer, maintaining humidity, ensuring the increase of crop yield, and alleviating the problem of restricting agricultural production in China due to drought and water shortage. However, most of the agricultural film plastics currently used are high-molecular PE and PVC polymers, which have high crystallinity and melt index (MI). They are neither eroded by microorganisms nor decomposed by themselves in the soil, and their biodegradation cycle is generally several decades. In hundreds of years, toxic and harmful substances such as plasticizers will be dissolved during the degradation process. I...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L93/00C08K13/02C08K3/16C08K5/00C08K5/07C08J5/18A01G13/02
CPCC08J5/18A01G13/0275C08J2323/06C08J2493/00C08K13/02C08K2003/162C08K5/0058C08K5/07
Inventor 汤佳鹏刘希文胡佳楠朱俐
Owner NANTONG UNIVERSITY
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