Preparation method of plant source herbicide

A herbicide and plant-sourced technology, applied in the field of pesticides, can solve problems such as environmental health hazards, water and soil pollution, and slow effects, and achieve good weeding effects, environmental friendliness, and good safety effects

Inactive Publication Date: 2016-04-13
砀山县绿源生态肥料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to blind abuse, large or excessive use of various herbicides not only affects agricultural production and crop yields, but also has serious negative impacts on the ecological environment, such as water and soil pollution, soil detoxification ability decline, local microclimate damage, etc.
Long-term use of herbicides such as glyphosate can cause weeds to develop drug resistance. The existing plant-derived biological herbicides are slow to exert their effects, and the weeding is not complete, and most of them still have traditional drugs such as glyphosate. Harm to the ecological environment and human health

Method used

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  • Preparation method of plant source herbicide
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Examples

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Effect test

Embodiment 1

[0022] A preparation method of botanical herbicide, comprising the following steps:

[0023] (1) Add water accounting for 30% of the weight of the rice bran, stir evenly, raise the temperature to 38°C, then add 2.3% of the weight of the rice bran and 0.3% of the compound enzyme, heat the enzymatic hydrolysis for 18 hours, and heat up to 85°C ℃, keep warm for 30min;

[0024] The compound enzyme is composed of lipase and cellulase in a mass ratio of 1:0.3;

[0025] (2) Take the enzymatically hydrolyzed rice bran, first add 70% ethanol aqueous solution according to the ratio of solid to liquid 1g:9mL, heat to 55°C, reflux for 5h, filter, and mix rice bran with ethyl acetate-ethanol solution in the filter residue (The volume ratio of ethyl acetate to ethanol is 4:96). The ratio of solid to liquid is 1g:8mL. Mix, heat to 45°C, reflux for 5h, filter, and combine the two filtrates to obtain the rice bran extract;

[0026] (3) Take 68 parts of rice bran extract, 4 parts of karaya gu...

Embodiment 2

[0028] A preparation method of botanical herbicide, comprising the following steps:

[0029] (1) Add water accounting for 30% of its weight to rice bran, stir evenly, heat up to 38°C, then add 2.3% of calcium acetate and 0.3% of compound enzymes respectively accounting for rice bran weight, keep warm for 15 hours, and heat up to 85°C ℃, keep warm for 30min;

[0030] The compound enzyme is composed of lipase and cellulase in a mass ratio of 1:0.3;

[0031] (2) Take the enzymatically hydrolyzed rice bran, first add an aqueous ethanol solution with a volume fraction of 68% according to the ratio of solid to liquid 1g:9mL, heat to 55°C, reflux for 5 hours, filter, and mix the rice bran with ethyl acetate-ethanol solution in the filter residue (The volume ratio of ethyl acetate to ethanol is 4:96). The ratio of solid to liquid is 1g:8mL. Mix, heat to 45°C, reflux for 5h, filter, and combine the two filtrates to obtain the rice bran extract;

[0032] (3) Take 70 parts of rice bran...

Embodiment 3

[0034] A preparation method of botanical herbicide, comprising the following steps:

[0035] (1) Add water accounting for 30% of the weight of the rice bran, stir evenly, heat up to 38°C, then add 2.3% of the weight of the rice bran and 0.3% of the compound enzyme, heat the enzymatic hydrolysis for 20 hours, and heat up to 85°C ℃, keep warm for 30min;

[0036] The compound enzyme is composed of lipase and cellulase in a mass ratio of 1:0.3;

[0037] (2) Take the enzymatically hydrolyzed rice bran, first add an aqueous ethanol solution with a volume fraction of 65% according to the ratio of solid to liquid 1g:9mL, heat to 55°C, reflux and extract for 5 hours, filter, and mix the rice bran with ethyl acetate-ethanol solution in the filter residue (The volume ratio of ethyl acetate to ethanol is 4:96). The ratio of solid to liquid is 1g:8mL. Mix, heat to 45°C, reflux for 5h, filter, and combine the two filtrates to obtain the rice bran extract;

[0038] (3) Take 60 parts of ric...

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Abstract

The invention belongs to the technical field of pesticide, and more specifically relates to a preparation method of a plant source herbicide. The preparation method comprises following steps: rice bran is subjected to enzymolysis, and is subjected to two times of reflux extraction with ethanol and ethyl acetate-ethanol respectively; an obtained rice bran reflux extraction solution is uniformly mixed with karaya gum, SAS, and triethanolamine. According to the invention, in rice bran extraction process, rice bran is subjected to enzymolysis degreasing, so that ferulic acid dissolution rate and later stage extraction rate can be increased in extraction process; in extraction process, different solutions are added for two times of extraction so as to extract ferulic acid in rice bran as far as possible; and the plant source herbicide prepared via combination of the raw materials is friendly to the environment, is excellent in weeding effect, can be degraded completely in soil, and is safe to crops.

Description

technical field [0001] The invention relates to a herbicide, in particular to a preparation method of a botanical herbicide, and belongs to the technical field of pesticides. Background technique [0002] Herbicides mainly inhibit, hinder or interfere with various important physiological and biochemical processes of plants, so that weeds cannot grow normally and die. In recent years, a variety of herbicides have been widely used in my country. The use of herbicides has reduced costs for farmers, reduced labor force, and improved productivity. It is a manifestation of the progress of modern agricultural production. However, due to blind abuse, large or excessive use of various herbicides not only affects agricultural production and crop yields, but also has serious negative impacts on the ecological environment, such as water and soil pollution, soil detoxification ability decline, local microclimate damage, etc. . Long-term use of herbicides such as glyphosate can cause we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/02A01N37/38A01P13/00
CPCA01N37/38A01N63/10
Inventor 张杰
Owner 砀山县绿源生态肥料股份有限公司
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