CN112335697A

CN112335697A - Plant protective agent and preparation method thereof

Info

Publication number: CN112335697A
Application number: CN202011145479.XA
Authority: CN
Inventors: 吴奉城; 吴言新
Original assignee: Hunan Shunxin Longchen Biology Engineering Co ltd
Current assignee: Hunan Shunxin Longchen Biology Engineering Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-02-09

Abstract

The invention discloses a plant protectant, which comprises raw material medicines and an auxiliary agent; the raw material medicine comprises the following components in parts by weight: 10-25 parts of sophora flavescens extract, 15-20 parts of cytisine extract, 5-15 parts of radix stemonae extract, 15-35 parts of chloranthus japonicus extract and 15-30 parts of herba pyrrosiae extract. The plant protective agent has high efficiency, low toxicity, environmental protection, safety and long lasting period, can effectively improve the quality and safety of food, and is beneficial to the sustainable development of the environment. In addition, the invention also provides a preparation method of the plant protective agent, and the method also has the technical effects, and is simple in process and low in production cost.

Description

Plant protective agent and preparation method thereof

Technical Field

The invention relates to the technical field of plant protection, in particular to a plant protective agent and a preparation method thereof.

Background

The pesticide is a chemical agent used for preventing and controlling plant diseases and insect pests and regulating plant growth in agriculture, and is widely used for agriculture, forestry and animal husbandry production, environmental and household sanitation, pest and disease control, industrial product mildew and moth prevention and the like. The pesticide has various varieties, and can be mainly divided into insecticide, acaricide, rodenticide, nematicide, molluscicide, bactericide, herbicide, plant growth regulator and the like according to the application; according to the raw material source, the pesticide can be divided into mineral source pesticides (inorganic pesticides), biological source pesticides (natural organic matters, microorganisms, antibiotics and the like) and chemical synthetic pesticides; according to the chemical structure, organic chlorine, organic phosphorus, organic nitrogen, organic sulfur, carbamate, pyrethroid, amide compounds, urea compounds, ether compounds, phenol compounds, phenoxy carboxylic acids, amidines, triazoles, heterocycles, benzoic acids, organometallic compounds and the like are mainly used.

As a big agricultural country, the pesticide plays an important role in agricultural production in China. With the improvement of health consciousness of people, consumers pay more and more attention to the safety of agricultural products, and the national restrictions on pesticide residues are more and more strict. In order to reduce the use risk of pesticides and reduce pesticide residues, efforts to develop novel pesticides have become urgent.

Disclosure of Invention

In order to solve the technical problems, the invention provides a plant protective agent which has high efficiency, low toxicity, environmental protection, safety and long lasting period, can effectively improve the quality and safety of food, and is beneficial to the sustainable development of the environment. In addition, the invention also provides a preparation method of the plant protective agent, and the method also has the technical effects, and is simple in process and low in production cost.

The invention discloses a plant protectant, which comprises raw material medicines and an auxiliary agent; the raw material medicine comprises the following components in parts by weight: 10-25 parts of sophora flavescens extract, 15-20 parts of cytisine extract, 5-15 parts of radix stemonae extract, 15-35 parts of chloranthus japonicus extract and 15-30 parts of herba pyrrosiae extract.

Preferably, the raw material medicine comprises the following components in parts by weight: 15-25 parts of sophora flavescens extract, 18-20 parts of cytisine extract, 8-13 parts of radix stemonae extract, 22-30 parts of chloranthus japonicus extract and 20-28 parts of herba pyrrosiae extract.

Preferably, the sophora flavescens extract is obtained by extracting the dried roots of sophora flavescens, and the preparation method comprises the following steps: pulverizing dried radix Sophorae Flavescentis, and extracting with water for 1-3 times, each for 1-2 hr; extracting the obtained water extract with petroleum ether for 2-3 times, and mixing petroleum ether extracts; concentrating under reduced pressure, and vacuum drying to obtain radix Sophorae Flavescentis extract.

Preferably, the cytisine extract is obtained by soaking and extracting pulverized thermopsis lanceolata with ethanol, or performing ultrasonic extraction or ethanol reflux heating extraction, then performing suction filtration, and performing rotary evaporation and concentration.

Preferably, the stemona root extract is extracted from dried root tuber of stemona, and the preparation method comprises the following steps: cleaning, drying and pulverizing dried root tuber of radix Stemonae, soaking in 60-80% ethanol for 12-36 hr, ultrasonically shaking for 30-60min, filtering, and rotary evaporating the filtrate for concentration.

Preferably, the herba Euphorbiae Humifusae extract is prepared by cleaning whole plant of herba Euphorbiae Humifusae, drying, pulverizing, decocting with water for 2-4 times, each for 1.5-2.5 hr, and filtering to obtain extractive solution; mixing the extractive solutions; adding 50-65% ethanol into the extractive solution, dissolving, standing for 12-36 hr, collecting the upper ethanol extractive solution, concentrating under reduced pressure, and vacuum drying the concentrate.

Preferably, the chloranthus japonicus extract is prepared by cleaning whole plant of chloranthus japonicus, drying, pulverizing, adding 60-90% ethanol, ultrasonic extracting at 40-65 deg.C and 70-100MHz for 30-60min, filtering, and rotary evaporating the filtrate for concentration.

Preferably, the dosage form of the plant protective agent is any one of suspending agent, water dispersible granule, wettable powder, missible oil or emulsifiable granule.

Preferably, the auxiliary agent comprises one or more of a dispersing agent, an antifreezing agent, a thickening agent, an antifoaming agent, a wetting agent, a disintegrating agent, an emulsifying agent, a solvent and a binder.

Preferably, the emulsifier comprises one or more of calcium dodecylbenzene sulfonate, styrylphenol polyoxyethylene ether, castor oil polyoxyethylene ether, polyoxyethylene fatty alcohol ether and fatty alcohol polyoxyethylene ester.

Preferably, the dispersant comprises one or more of lignosulfonate, alkylphenol polyoxyethylene ether sulfate, sodium salt of 2-naphthalene sulfonic acid formaldehyde polymer, fatty acid ester sulfate and polyoxyethylene polyoxypropylene block copolymer.

Preferably, the wetting agent comprises one or more of sodium dodecyl benzene sulfonate, sodium dibutyl naphthalene sulfonate, dioctyl sodium sulfosuccinate, sodium N-methyltaurate fatty amide, sodium petroleum sulfonate, dried tea seed powder and saponin powder.

Preferably, the thickener comprises one or more of xanthan gum, carboxymethyl cellulose, sodium polyacrylate, gaseous silicon dioxide, bentonite, magnesium aluminum silicate and white carbon black.

Preferably, the antifreeze agent comprises one or more of ethylene glycol, glycerol, propylene glycol, polyethylene glycol, glycerol, diethylene glycol, propylene alcohol, glycerol-diethyl ether-diethylene glycol.

Preferably, the defoaming agent comprises one or more of polyether siloxane, polymerized glycerol, organic silicone oil, methanol, ethanol and epoxidized soybean oil.

Preferably, the disintegrant comprises one or more of urea, magnesium chloride, sodium chloride, ammonium sulfate.

Preferably, the filler comprises one or more of kaolin, diatomite, white carbon black, light calcium carbonate and talcum powder.

Preferably, the solvent comprises one or more of ethanol, cyclohexanone, 150# solvent oil, methyl pyrrolidone, octyl pyrrolidone, dimethylformamide, dimethyl sulfoxide and decanamide.

Preferably, the binder is one or more of water-soluble polymer cellulose, polyethylene glycol and polyvinyl alcohol.

In addition, the invention also provides a preparation method of the plant protective agent, which comprises the following steps:

pulverizing dried radix Sophorae Flavescentis, extracting with water for 1-3 times, each for 1-2 hr, extracting the water extractive solution with petroleum ether for 2-3 times, mixing petroleum ether extracts, concentrating under reduced pressure, and vacuum drying the concentrate to obtain radix Sophorae Flavescentis extract;

soaking pulverized thermopsis lanceolata in ethanol, extracting with ultrasound or refluxing and heating with ethanol, filtering, and rotary evaporating for concentration to obtain laburnine extract;

cleaning, drying and pulverizing dried root tuber of radix Stemonae, soaking in 60-80% ethanol for 12-36 hr, ultrasonically shaking for 30-60min, filtering, and rotary evaporating the filtrate for concentration to obtain radix Stemonae extract;

cleaning whole plant of herba Erodii seu Geranii, drying, pulverizing, decocting in water for 2-4 times, each for 1.5-2.5 hr, and filtering to obtain extractive solution; mixing the extractive solutions; adding 50-65% ethanol into the extractive solution, dissolving, standing for 12-36 hr, collecting the upper ethanol extractive solution, concentrating under reduced pressure, and vacuum drying the concentrate to obtain herba Erodii seu Geranii extract;

cleaning whole plant of herba Chloranthi Serrati, drying, pulverizing, adding 60-90% ethanol, performing ultrasonic extraction at 40-65 deg.C and 70-100MHz for 30-60min, filtering, and rotary evaporating the filtrate for concentration to obtain herba Chloranthi Serrati extract;

uniformly mixing 10-25 parts by weight of radix sophorae flavescentis extract, 15-20 parts by weight of cytisine extract, 5-15 parts by weight of radix stemonae extract, 15-35 parts by weight of chloranthus japonicus extract and 15-30 parts by weight of herba euphorbiae lathyris extract to obtain a raw material medicine; and then adding an auxiliary agent into the raw material medicines, and uniformly mixing to obtain the plant protective agent.

Compared with the prior art, the plant protective agent provided by the invention has the beneficial effects that:

1. the obvious synergistic effect generated by combining a plurality of active components in the plant protective agent is utilized, the use times of the plant protective agent are reduced, the use cost is reduced, the pollution to the environment is reduced, the generation of drug resistance of pests is delayed, and the service life of the plant protective agent is prolonged;

2. the plant protective agent can be prepared into various formulations, is not limited to one formulation, and meets various market requirements.

Compared with the prior art, the insecticidal composition has reasonable components, good effect of controlling pests, low dosage and cost, and obvious synergistic effect instead of simple superposition of the components.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example 1

A plant protectant comprises a raw material medicament and an auxiliary agent, wherein the mass ratio of the raw material medicament to the auxiliary agent is 1: 2; the raw material medicine comprises the following components in parts by weight: 10 parts of sophora flavescens extract, 20 parts of sparteine extract, 15 parts of radix stemonae extract, 35 parts of chloranthus japonicus extract and 30 parts of herba euphorbiae lathyris extract; the auxiliary agent comprises: 11 parts of sodium dibutylnaphthalenesulfonate, 5 parts of xanthan gum, 4 parts of sodium chloride, 26 parts of No. 150 solvent oil and 20 parts of diatomite.

Example 2

A plant protectant comprises a raw material medicament and an auxiliary agent, wherein the mass ratio of the raw material medicament to the auxiliary agent is 2: 3; the raw material medicine comprises the following components in parts by weight: 15 parts of sophora flavescens extract, 18 parts of sparteine extract, 12 parts of radix stemonae extract, 26 parts of chloranthus japonicus extract and 17 parts of herba euphorbiae lathyris extract; the auxiliary agent comprises: 4 parts of fatty alcohol polyoxyethylene ester, 8 parts of alkylphenol polyoxyethylene ether sulfate, 6 parts of sodium dibutylnaphthalenesulfonate, 2 parts of sodium polyacrylate, 20 parts of glycerol and 25 parts of talcum powder.

Example 3

A plant protectant comprises a raw material medicament and an auxiliary agent, wherein the mass ratio of the raw material medicament to the auxiliary agent is 3: 4; the raw material medicine comprises the following components in parts by weight: 18 parts of sophora flavescens extract, 19 parts of sparteine extract, 11 parts of radix stemonae extract, 27 parts of chloranthus japonicus extract and 24 parts of herba euphorbiae lathyris extract; the auxiliary agent comprises: 7 parts of castor oil polyoxyethylene ether, 3 parts of alkylphenol polyoxyethylene ether sulfate, 8 parts of dioctyl sodium sulfosuccinate and 5 parts of dimethylformamide.

The preparation method of the plant protective agent comprises the following steps: pulverizing dried radix Sophorae Flavescentis, extracting with water for 3 times, each for 1.5 hr, extracting the obtained water extractive solution with petroleum ether for 2 times, mixing petroleum ether extracts, concentrating under reduced pressure, and vacuum drying the concentrate to obtain radix Sophorae Flavescentis extract;

cleaning thermopsis lanceolate, drying, pulverizing, adding 70% ethanol, ultrasonic extracting at 50 deg.C under 90MHz for 40min, filtering, and rotary evaporating the filtrate for concentrating to obtain laburnine extract;

cleaning, drying and crushing dried tuber roots of radix stemonae sessilifoliae, adding 65% ethanol, soaking for 14 hours, ultrasonically shaking for 60min, filtering, and performing rotary evaporation and concentration on the filtrate to obtain radix stemonae extract;

cleaning whole plant of herba Erodii seu Geranii, drying, pulverizing, decocting in water for 2 hr for 3 times, and filtering to obtain extractive solution; mixing the extractive solutions; adding 55% ethanol into the extractive solution, dissolving completely, standing for 24 hr, collecting the upper ethanol extractive solution, concentrating under reduced pressure, and vacuum drying the concentrate to obtain herba Erodii seu Geranii extract;

cleaning whole plant of herba Chloranthi Serrati, drying, pulverizing, adding 80% ethanol, performing ultrasonic extraction at 55 deg.C and 75MHz for 45min, filtering, and rotary evaporating the filtrate for concentration to obtain herba Chloranthi Serrati extract;

uniformly mixing 13 parts by weight of radix sophorae flavescentis extract, 16 parts by weight of sparteine extract, 9 parts by weight of radix stemonae extract, 25 parts by weight of chloranthus japonicus extract and 24 parts by weight of herba euphorbiae lathyris extract to obtain a raw material medicine; then adding an auxiliary agent (the mass ratio of the raw material medicine to the auxiliary agent is 1:1) into the raw material medicine, and uniformly mixing to obtain the plant protective agent.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plant protectant is characterized by comprising raw material medicines and auxiliary agents;

the raw material medicine comprises the following components in parts by weight: 10-25 parts of sophora flavescens extract, 15-20 parts of cytisine extract, 5-15 parts of radix stemonae extract, 15-35 parts of chloranthus japonicus extract and 15-30 parts of herba pyrrosiae extract.

2. The plant protective agent as claimed in claim 1, wherein the raw material drug comprises the following components in parts by weight: 15-25 parts of sophora flavescens extract, 18-20 parts of cytisine extract, 8-13 parts of radix stemonae extract, 22-30 parts of chloranthus japonicus extract and 20-28 parts of herba pyrrosiae extract.

3. The plant protection agent according to claim 1, wherein the extract of Sophora flavescens Aiton is extracted from the dried root of Sophora flavescens Aiton, and is prepared by the following steps: pulverizing dried radix Sophorae Flavescentis, and extracting with water for 1-3 times, each for 1-2 hr; extracting the obtained water extract with petroleum ether for 2-3 times, and mixing petroleum ether extracts; concentrating under reduced pressure, and vacuum drying to obtain radix Sophorae Flavescentis extract.

4. The plant protectant according to claim 1, wherein the cytisine extract is obtained by soaking pulverized thermopsis lanceolata in ethanol, ultrasonic extracting or reflux-heating extracting with ethanol, filtering, and rotary evaporating for concentration.

5. The plant protectant of claim 1, wherein the stemona japonica extract is extracted from dried tuberous root of stemona japonica, and the preparation method comprises: cleaning, drying and pulverizing dried root tuber of radix Stemonae, soaking in 60-80% ethanol for 12-36 hr, ultrasonically shaking for 30-60min, filtering, and rotary evaporating the filtrate for concentration.

6. The plant protectant according to claim 1, wherein the extract of herba Euphorbiae Humifusae is obtained by washing whole plant of herba Euphorbiae Humifusae, drying, pulverizing, decocting with water for 2-4 times (each for 1.5-2.5 h), and filtering to obtain extractive solution; mixing the extractive solutions; adding 50-65% ethanol into the extractive solution, dissolving, standing for 12-36 hr, collecting the upper ethanol extractive solution, concentrating under reduced pressure, and vacuum drying the concentrate.

7. The plant protectant of claim 1, wherein the chloranthus japonicus extract is prepared by washing whole plant of chloranthus japonicus, drying, pulverizing, adding 60-90% ethanol, ultrasonic extracting at 40-65 deg.C and 70-100MHz for 30-60min, filtering, and concentrating the filtrate by rotary evaporation.

8. The plant protection agent according to claim 1, wherein the formulation of the plant protection agent is any one of a suspension, a water dispersible granule, a wettable powder, an emulsifiable concentrate, or an emulsifiable granule.

9. The plant protection agent according to any one of claims 1 to 8, wherein the auxiliary agent comprises one or more of a dispersant, an antifreeze, a thickener, an antifoaming agent, a wetting agent, a disintegrant, an emulsifier, a solvent, and a binder.

10. A method for preparing a plant protection agent according to any one of claims 1 to 9, comprising the steps of:

pulverizing dried radix Sophorae Flavescentis, extracting with water for 1-3 times, each for 1-2 hr, extracting the obtained water extractive solution with petroleum ether for 2-3 times, mixing petroleum ether extracts, concentrating under reduced pressure, and vacuum drying the concentrate to obtain radix Sophorae Flavescentis extract;