Plant source herbicide and preparation method thereof

A technology of herbicides and botanical sources, applied in the field of botanical herbicides and their preparation, to achieve the effects of reducing residues, easy degradation, and convenient material extraction

Inactive Publication Date: 2015-12-23
海南省林业科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Plant source herbicide and preparation method thereof

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Embodiment 1

[0039] 1. Wash the collected Hainan staghorn vine, dry it in the shade indoors, crush it, pass through a 40-mesh sieve, then add methanol 5 times the volume of the dry powder and extract it in a dark place for 3 days, and repeatedly extract it 3 times. The extracts were combined, concentrated under reduced pressure at 45°C to form a paste, and the methanol extract of S. hainanensis was obtained, which was stored in a refrigerator at 4°C for later use.

[0040] 2. According to the ratio of methanol extract of Hainan staghorn vine 0.1%, methanol 5%, sodium lauryl sulfate 3%, Nongru No. 300 2%, benzoic acid 0.5%, vitamin E 0.5%, and the balance is water . Take by weighing 10g methanol extract of hainan staghorn vine, 500ml methanol, mix and stir evenly, and set aside; 300g sodium lauryl sulfate, 200g Nongru No. 300 and 2000ml water are mixed and stirred, then added to the methanol containing extract, and then Add 5g of benzoic acid, 5g of vitamin E and the water of surplus, stir...

Embodiment 2

[0042] 1. Wash the collected Hainan staghorn vine, dry it in the shade indoors, crush it, pass through a 50-mesh sieve, add methanol 4 times the volume of the dry powder, and extract it in a dark place for 4 days, and repeatedly extract it twice. The extracts were combined, concentrated under reduced pressure at 40°C to form a paste, and the methanol extract of S. hainanensis was obtained, which was stored in a refrigerator at 4°C for later use.

[0043] 2. According to the ratio of Hainan staghorn vine methanol extract 1%, methanol 7%, Nongru No. 700 6%, sodium lignosulfonate 4%, sorbic acid 0.5%, vitamin E 0.5%, and the balance is water. Weigh 10g methanol extract of hainan staghorn vine, 70ml methanol, mix and stir; 60g Nongru No. 700, 40g sodium lignosulfonate and 300ml water are mixed and stirred, then added to the methanol containing extract, and then 5g sorbic acid , 5g vitamin E and the water of surplus, stir at high speed, obtain the microemulsion product, pass inspec...

Embodiment 3

[0045] 1. Wash the collected Hainan staghorn vine, dry it naturally in the shade, crush it, and pass it through a 60-mesh sieve, then add 6 times the volume of dry powder to leaching in a dark place for 2 days, and repeatedly leaching 4 times. The extracts were combined, concentrated under reduced pressure at 50°C to form a paste, and the methanol extract of S. hainanensis was obtained, which was stored in a refrigerator at 4°C for later use.

[0046] 2. According to Hainan staghorn vine methanol extract 5%, n-butanol 10%, nonylphenol polyoxyethylene ether 8%, lauryl calcium sulfate 2%, citric acid 1%, tertiary butyl hydroquinone 1%, The balance is the proportion of water. Weigh 50g methanol crude extract of staghorn vine, 100ml n-butanol, mix and stir; 80g nonylphenol polyoxyethylene ether, 20g lauryl calcium sulfate and 400ml water are mixed and stirred, and then added to the n-butanol containing extract , add 10g citric acid, 10g tert-butyl hydroquinone and the water of su...

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Abstract

The invention belongs to the field of biopesticides and relates to a plant source herbicide. The plant source herbicide is prepared by uniformly mixing chonemorpha splendens methanol extract, a cosolvent, a surfactant, a preservative, a stabilizer and water, wherein the chonemorpha splendens methanol extract is obtained by washing collected chonemorpha splendens, drying the chonemorpha splendens in the shade and crushing, adding methanol to digest and extract at a shady place, and decompressing and concentrating an extracting solution into paste. According to the plant source herbicide, the process is simple, and the materials are convenient to obtain and the cost is low; the chonemorpha splendens methanol extract is used as an active component, thus weeds can be effectively killed; the plant source herbicide is easy to degrade in the environment and the residues of chemical agents in a field are reduced, so that the plant source herbicide is environmentally friendly and has practical significance.

Description

technical field [0001] The invention belongs to the field of biological pesticides, and relates to a herbicide and a preparation method thereof, in particular to a botanical herbicide and a preparation method thereof. Background technique [0002] Chonemorpha G.Don plants are an important class of plants in the family Apocynaceae, mainly distributed in tropical and subtropical regions of Asia, and there are about 20 species. The plants of this genus have important pharmacological activities, such as dredging meridian and activating collaterals, promoting blood circulation and relieving pain, building bone and promoting granulation, and lowering blood pressure. They can also be used as garden landscape plants to beautify the environment. "Flora of China (Volume 63)" divides Chonemorpha eriostylis Pitard in my country into Chonemorpha eriostylis Pitard, Chonemorpha megacalyx Pier, Chonemorpha splendens Chunet Tsiang, Chonemorpha macrophylla G. There are 8 species of Chonemorph...

Claims

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Application Information

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IPC IPC(8): A01N65/08A01N25/30A01P13/00
Inventor 钱军苟志辉陈国德吴海霞芩选才杨文凤
Owner 海南省林业科学研究所
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