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Herbicide prepared by taking lilac leaf extract as active component, and preparation method of herbicide

A technology for active ingredients and herbicides, applied in the field of herbicides and their preparation, can solve the problems of chemical herbicides polluting the environment, pesticide residues, etc., and achieves the effects of not easy drug resistance, easy degradation, and high activity

Inactive Publication Date: 2018-04-17
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a plant-derived wettable powder herbicide with lilac leaf extract as an active ingredient and a preparation method thereof for the current serious environmental pollution and pesticide residue problems caused by chemical herbicides. Significant effect

Method used

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  • Herbicide prepared by taking lilac leaf extract as active component, and preparation method of herbicide
  • Herbicide prepared by taking lilac leaf extract as active component, and preparation method of herbicide
  • Herbicide prepared by taking lilac leaf extract as active component, and preparation method of herbicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: A herbicide with lilac leaf extract as active ingredient and its preparation method

[0035] (1) Choose the mature lilac leaves, dry them, and crush them with 40 mesh;

[0036] (2) Take 1,000 grams of crushed lilac leaves, add distilled water to the crushed lilac leaves, with a material-to-liquid ratio of 1:10 (mass ratio), heat to 55-65°C, extract 3 times, each for 24 h ; After filtering, combine the filtrate;

[0037] (3) The filtrate is concentrated by rotary evaporation at 55-65°C, and concentrated to the original volume 1 / 40 , Dilute the above concentrated liquid with distilled water and extract with n-butanol 3 times; filter, combine the filtrate, and add water to make the volume up to 500 mL;

[0038] (4) According to the mass ratio of lilac leaf extract, sodium lignosulfonate and anhydrous sodium carbonate 8:1:1, respectively, they are dissolved in distilled water, filtered, the filtrate is mixed uniformly, and spray-dried to obtain purple Clove leaf extrac...

Embodiment 2

[0040] Example 2: A herbicide with lilac leaf extract as active ingredient and its preparation method

[0041] Choose mature lilac leaves, dry them, and crush them in 40 mesh.

[0042] Take 1000 grams of crushed lilac leaves, extract the lilac leaves with 95% ethanol for 3 times at room temperature, each 24h, the mass ratio of material to liquid during extraction is 1:5; then filter, spin the filtrate at 60℃ Evaporate and concentrate; concentrate to a volume of 1 / 40 of the original volume, dilute the concentrate with distilled water, and then extract 3 times with dichloromethane. Filter and combine the filtrate to obtain 500 mL to obtain the lilac leaf extract;

[0043] According to the mass ratio of lilac leaf extract, sodium lauryl sulfate and urea 8:1:1, respectively, they were dissolved in distilled water, filtered, the filtrate was mixed uniformly, and spray-dried to obtain the lilac leaf extract as Wettable powder herbicide with active ingredient.

Embodiment 3

[0044] Example 3: A herbicide with lilac leaf extract as active ingredient and its preparation method

[0045] Choose lilac leaves, sun-dried and crushed in 100 mesh.

[0046] Take 1000 grams of crushed lilac leaves, extract 5 times of lilac leaves with 95% ethanol at room temperature, each time for 24 hours, the mass ratio of material to liquid is 1:5. Filter, combine the filtrate, perform rotary evaporation concentration at 60°C, and concentrate to a volume of 1 / 40 of the original volume; after diluting the above concentrated solution with distilled water, extract 3 times with ethyl acetate. Filter and combine the filtrate to obtain 500 mL, and then obtain a wettable powder herbicide whose active ingredient is the syringa leaf extract.

[0047] According to the mass ratio of syringa leaf extract, sodium lauryl sulfate and soluble starch 8:1:1, respectively, they are dissolved in distilled water, filtered, the filtrate is mixed uniformly, and spray-dried to obtain the syringa leaf ...

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Abstract

The invention relates to a herbicide prepared by taking a lilac leaf extract as an active component as well as a preparation method and application of the herbicide. The herbicide prepared by taking the lilac leaf extract as the active component is prepared from the following components by mass percent: 70-80% of the active component and the balance of auxiliary components, wherein the auxiliary components comprise a surface active agent and filler. The components of the plant-derived herbicide provided by the invention originate from the plant bodies, and the bio-herbicide takes natural products as herbicidal active component, so that the herbicide is easily degraded and is safe and environment-friendly. The herbicide has a good prevention effect on gramineous and broad-leaved weeds, especially has a special effect for the broad-leaved weeds, and can be used as a selective herbicide for gramineous crops. Compared with the prior art, the plant-derived herbicide provided by the invention has the characteristics of being high in activity, remarkable in prevention effect, higher in selectivity, and the like. The herbicide has no harm to crops and no pollution to the environment, is free from pesticide residue, does not easily cause drug resistance, and is environmentally safe.

Description

Technical field [0001] The invention belongs to the field of biological technology, and specifically relates to a herbicide using lilac leaf extract as an active ingredient, and a preparation method and application thereof. Background technique [0002] Weeds have huge root systems, and their water and fertilizer consumption capacity is much higher than that of crops; weeds absorb nitrogen 4-9Kg / mu, phosphorus 1.2-2Kg / mu, and potassium 6.5-9Kg / mu. As an intermediate host of crop diseases and insect pests, crops are harmed by diseases and insects; it invades above and underground spaces, affects the photosynthesis of crops, reduces crop yields significantly and reduces crop quality. At present, weeding labor has accounted for 1 / 3-1 / 2 of field labor; some weeds contain toxins and ultimately affect human and animal health. The world’s annual crop production is reduced by 9.7% due to weeds, and the yield loss is 200 billion kg. The use of chemical herbicides is the main strategy f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/08A01N25/14A01P13/00
CPCA01N25/14A01N65/00A01N65/08
Inventor 郭予琦田曾元史团省田一迪冯鑫王小红刘丽芳郭鑫鑫
Owner ZHENGZHOU UNIV
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