CN101919415A - High-efficient low-toxicity compound botanical pesticide and preparation method thereof - Google Patents
High-efficient low-toxicity compound botanical pesticide and preparation method thereof Download PDFInfo
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- CN101919415A CN101919415A CN 201010230716 CN201010230716A CN101919415A CN 101919415 A CN101919415 A CN 101919415A CN 201010230716 CN201010230716 CN 201010230716 CN 201010230716 A CN201010230716 A CN 201010230716A CN 101919415 A CN101919415 A CN 101919415A
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Abstract
The invention relates to a pesticide, in particular to a high-efficient low-toxicity compound botanical pesticide and a preparation method thereof, and the compound botanical pesticide comprises a botanical pesticide consisting of 1-7 parts of hibiscus trionum and 1 part of radix cynanchi auriculati, a solvent, a cosolvent, an emulsifier and an appropriate amount of water. The preparation process of the method for preparing the high-efficient low-toxicity compound botanical pesticide comprises extraction of active ingredients, concentration and preparation of the botanical pesticide. As raw materials of the botanical pesticide are derived from natural plants, the botanical pesticide is safe for people and animals and difficult to lead diseases and pests to produce the drug resistance, thereby being highly valued nationwide and being the safety pesticide with low toxicity and low residue. The hibiscus trionum and the radix cynanchi auriculati are widely distributed in our country and can effectively prevent and treat the diseases and the pests and have the advantages of developing the botanical pesticides. The compound botanical pesticide can improve the efficacy and the comprehensive prevention and treatment effect of the product, have fast onset of action and long lasting period and be difficult to produce the resistance during the using process by compounding the hibiscus trionum with the radix cynanchi auriculati and relying on the synergy between the active ingredients.
Description
Affiliated technical field
The present invention relates to a kind of agricultural chemicals, relate to a kind of high-efficient low-toxicity compound botanical pesticide and preparation method thereof specifically.
Background technology
Agricultural chemicals market is at present still based on chemical pesticide both at home and abroad, though effective kill pests, but chemical pesticide can cause problems such as " 3R ", " three cause ", severe contamination environment and agricultural product, human beings'health has been caused great harm, be unfavorable for developing green agriculture, be unfavorable for the outlet of agricultural product.Therefore, use public nuisance-free agricultural chemicals instead of chemical agricultural chemicals pollution-free, high-efficiency low-toxicity must become the emphasis of novel agrochemical development.
In recent years, though China's Development and Production goes out some botanical pesticides preferably,, make progress slower because technology, laboratory facilities are limited.These action of agricultural chemicals are slow in the effect of diseases and pests of agronomic crop, and quick-acting is not strong, limited it and promoted the use of.Some take the method that botanical pesticide and chemical pesticide is composite to improve the control efficiency of botanical pesticide, have obtained certain effect, have improved the quick-acting of botanical pesticide to a certain extent.But still contain a certain amount of chemical pesticide in these Recompounded pesticides, nuisanceless, the advantage of aspect such as free from environmental pollution has not existed as botanical pesticide for it.
Therefore, how reasonably choosing plant and carry out scientific matching, obtain the obvious results prescription, to improve the control efficiency of damage by disease and insect, is the problem that the development botanical pesticide presses for solution.
Summary of the invention
The object of the present invention is to provide a kind of is efficient, the safety of raw material, the plant pesticide of low-residual and the preparation method of this plant pesticide thereof with the plant.
For achieving the above object, technical scheme of the present invention is: a kind of high-efficient low-toxicity compound botanical pesticide, plant pesticide and solvent, cosolvent, emulsifier and an amount of water that this compound botanical pesticide is made up of 1-7 parts of flowerofanhour root or herbs and 1 part of cynanchum auriculatum Royle ex Wight are formed.
The above-mentioned plant pesticide of being made up of flowerofanhour root or herb and cynanchum auriculatum Royle ex Wight is flowerofanhour root or herb and the medicinal extract of cynanchum auriculatum Royle ex Wight through obtaining behind the alcohol extract.
Above-mentioned medicinal extract is respectively 1:1.3-5,1:0.3-3,1:0.3-4 with the mass/volume ratio of solvent, cosolvent, emulsifier.
In above-mentioned solvent is that volumetric concentration is 95% ethanol, and cosolvent is that fulvic acid, emulsifier are Tween-80.
The method for preparing a kind of high-efficient low-toxicity compound botanical pesticide, its preparation technology is:
1) extraction of active ingredient: after watermelon seedling and cynanchum auriculatum Royle ex Wight be ground into 20-40 order particle, mix in flowerofanhour root or herb and cynanchum auriculatum Royle ex Wight 1-7:1 ratio; Add the volumetric concentration be equivalent to 8 times of quality of plant powder and be 95% ethanol, normal temperature soaked 12-36 hours down, and ultrasonic Extraction, filtering and collecting filter liquid are standby;
2) concentrate: filtrate the concentrating of step 1 made medicinal extract;
3) preparation of plant pesticide: medicinal extract and solvent, cosolvent, emulsifier and the suitable quantity of water of step 2 are mixed with solution in proportion, are high-efficient low-toxicity compound botanical pesticide.
Botanical pesticide because of its raw material sources in natural plants, to the person poultry safety, sick worm be difficult for developing immunity to drugs and be subjected to the whole nation great attention, be the safety-type agricultural chemicals of a class low toxicity and low residue.And flowerofanhour root or herb, cynanchum auriculatum Royle ex Wight is widely distributed in China, and effectively prevention and elimination of disease and pests, has the advantage of development plant pesticide.The present invention relies on the synergy between the active ingredient by composite to flowerofanhour root or herb, cynanchum auriculatum Royle ex Wight, has improved the drug effect and the integrated control effect of product, and rapid-action, the lasting period is long, is difficult for the generation resistance in the use.
Embodiment
Embodiment 1
1, the extraction of active ingredient: flowerofanhour root or herb and cynanchum auriculatum Royle ex Wight are ground into 20 orders, get flowerofanhour root or herb powder 70 grams then, after cynanchum auriculatum Royle ex Wight powder 10 grams mix, the volumetric concentration that adds 640mL is 95% ethanol, normal temperature soaked 24 hours down, adopted ultrasonic Extraction then, filtering and collecting filter liquid.
2, concentrate: above-mentioned filtrate is condensed into the medicinal extract shape.Method for concentration adopts conventional method.
3, the preparation of plant pesticide: get medicinal extract 10g, add the 30mL volumetric concentration successively and be 95% ethanol as solvent, the 30mL fulvic acid is as cosolvent, the 20mL Tween-80 as emulsifier for mixing evenly after, add water and be settled to 100mL, obtain compound botanical pesticide product 100mL.
Embodiment 2
1, the extraction of active ingredient: flowerofanhour root or herb and cynanchum auriculatum Royle ex Wight are ground into 30 orders, get flowerofanhour root or herb powder 80 grams then, after cynanchum auriculatum Royle ex Wight powder 40 grams mix, the volumetric concentration that adds 800mL is 95% ethanol, normal temperature soaked 36 hours down, adopted ultrasonic Extraction then, filtering and collecting filter liquid.
2, concentrate: above-mentioned filtrate is condensed into the medicinal extract shape.Method for concentration adopts conventional method.
3, the preparation of plant pesticide: get medicinal extract 20g, add the 30mL volumetric concentration successively and be 95% ethanol as solvent, the 30mL fulvic acid is as cosolvent, the 10mL Tween-80 is as emulsifier, after stirring, add water and be settled to 100mL, obtain compound botanical pesticide product 100 mL.
Embodiment 3
1, the extraction of active ingredient: flowerofanhour root or herb and cynanchum auriculatum Royle ex Wight are ground into 40 orders, get flowerofanhour root or herb powder 50 grams then, after cynanchum auriculatum Royle ex Wight powder 50 grams mix, the volumetric concentration that adds 800mL is 95% ethanol, normal temperature soaked 30 hours down, adopted ultrasonic Extraction then, filtering and collecting filter liquid.
2, concentrate: above-mentioned filtrate is condensed into the medicinal extract shape.Method for concentration adopts conventional method.
3, the preparation of plant pesticide: get medicinal extract 30g, add the 40mL volumetric concentration successively and be 95% ethanol as solvent, the 10mL fulvic acid is as cosolvent, the 10mL Tween-80 is as emulsifier, after stirring, add water and be settled to 100mL, obtain compound botanical pesticide product 100mL.
Embodiment 4-5
The processing step 1,2 of embodiment 1 or 2 or 3, the basis on, the prescription such as the following table of the plant pesticide preparation of embodiment 4,5 steps 3:
| Sequence number | Medicinal extract (gram) | Ethanol (95%v/v) (mL) | Fulvic acid (mL) | Tween-80 (mL) |
| Embodiment 4 | 10 | 50 | 20 | 10 |
| Embodiment 5 | 10 | 30 | 10 | 40 |
In above-mentioned 5 embodiment, fulvic acid is that to extract and adjust pH from the humic acid that Ningxia produces be the fulvic acid of 5-7.
Experimentation and experimental data with above-mentioned 5 embodiment gained compound botanical pesticides are as follows:
Field trial and the data of control matrimony vine aphid.With 80% DDT EC, 40% phoxim emulsifiable concentrate, gamma cyhalothrin is the contrast medicament, the dilution respective concentration, and other establishes the spray clear water is blank.Selected sub-district, the tree vigo(u)r growth better.Matrimony vine spacing in the rows 1 m, line-spacing 2 m, the age of tree 3 years, tree vigo(u)r is medium, matrimony vine apid population radix is higher, and worm amount distribution uniform in matrimony vine aphid damage district, is reagent with 10% composite dilution agent, with the clear water is contrast (CK), uses the small hand-held sprayer, the complete stool even spraying.10 branches are randomly drawed in each processing, the mark of fixedly listing, and investigation 20 cm places, branch top, whole aphid quantity of every branches and leaves sheet positive and negative, investigation insect population radix before the dispenser, the 1st, 3,5,7,10,13 d investigate remaining insect population quantity respectively behind the medicine.Calculate go down rate and control efficiency of insect population respectively and see the following form 1.
2, field trial and the data of control diamond-back moth.With above-mentioned gained compound botanical pesticide product and volumetric concentration is that 80% DDT EC, volumetric concentration are that 40% phoxim emulsifiable concentrate and gamma cyhalothrin are the contrast medicament, the dilution respective concentration, other establishes the spray clear water is blank, and other field trials with the matrimony vine aphid are identical.Field trial data such as following table 2 to the control diamond-back moth:
The go down computational methods of rate and control efficiency rate of above-mentioned insect population are:
This medicine and commercially available agricultural chemical dichlorvos, phoxim, chrysanthemum ester have been done the field relatively, and by table 1, table 2 as can be known, the quick-acting of chemical pesticide dichlorvos and phoxim is strong, but lasting effect is far away from botanical pesticide, and 3 days preventive effects reduce after the dispenser.This medicine is long than traditional chemical agricultural chemicals lasting effect, and diamond-back moth and matrimony vine aphid are all had desirable control efficiency, is difficult for developing immunity to drugs, and has reduced spraying times, reduces residually, has embodied the advantage of plant pesticide.
Claims (5)
1. high-efficient low-toxicity compound botanical pesticide, plant pesticide and solvent, cosolvent, emulsifier and an amount of water that this compound botanical pesticide is made up of 1-7 parts of flowerofanhour root or herbs and 1 part of cynanchum auriculatum Royle ex Wight are formed.
2. a kind of high-efficient low-toxicity compound botanical pesticide according to claim 1 is characterized in that the above-mentioned plant pesticide of being made up of flowerofanhour root or herb and cynanchum auriculatum Royle ex Wight is flowerofanhour root or herb and the medicinal extract of cynanchum auriculatum Royle ex Wight through obtaining behind the alcohol extract.
3. a kind of high-efficient low-toxicity compound botanical pesticide according to claim 2 is characterized in that the above-mentioned medicinal extract and the mass/volume ratio of solvent, cosolvent, emulsifier are respectively: 1:1.3-5,1:0.3-3,1:0.3-4.
4. a kind of high-efficient low-toxicity compound botanical pesticide according to claim 3 is characterized in that above-mentioned solvent is that volumetric concentration is 95% ethanol, and cosolvent is that fulvic acid, emulsifier are Tween-80.
5. prepare the method for claim 1 or 2 or 3 or 4 described a kind of high-efficient low-toxicity compound botanical pesticides, its preparation technology is:
1) extraction of active ingredient: after watermelon seedling and cynanchum auriculatum Royle ex Wight be ground into 20-40 order particle, mix in flowerofanhour root or herb and cynanchum auriculatum Royle ex Wight 1-7:1 ratio; Add the volumetric concentration be equivalent to 8 times of quality of plant powder and be 95% ethanol, normal temperature soaked 12-36 hours down, and ultrasonic Extraction, filtering and collecting filter liquid are standby;
2) concentrate: filtrate the concentrating of step 1 made medicinal extract;
3) preparation of plant pesticide: medicinal extract and solvent, cosolvent, emulsifier and the suitable quantity of water of step 2 are mixed with solution in proportion, are high-efficient low-toxicity compound botanical pesticide.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105145644A (en) * | 2015-08-05 | 2015-12-16 | 陆月霞 | Preparation technology of biomass pesticide capable of preventing rice toxicity |
| CN113906940A (en) * | 2021-09-17 | 2022-01-11 | 广西壮族自治区中国科学院广西植物研究所 | Accurate and efficient pesticide spraying method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101416645A (en) * | 2008-01-30 | 2009-04-29 | 北京农学院 | Auriculate swallowwort root extract and new use thereof |
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2010
- 2010-07-20 CN CN 201010230716 patent/CN101919415A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101416645A (en) * | 2008-01-30 | 2009-04-29 | 北京农学院 | Auriculate swallowwort root extract and new use thereof |
Non-Patent Citations (3)
| Title |
|---|
| 《中国农学通报》 20100415 殷丽娜等 3种植物提取物复配对小菜蛾的联合毒力作用 第222-223页"1材料与方法"、第223页"3结果与讨论"部分 1-5 第26卷, 第7期 * |
| 《农药》 20090430 马晓梅等 牛皮消对小菜蛾的活性测试及活性成分分析 第261-264页 1-5 第48卷, 第4期 * |
| 《江苏农业科学》 20081231 马晓梅等 牛皮消乙醇提取物对小菜蛾的生物活性研究 第111-113页 1-5 , 第6期 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105145644A (en) * | 2015-08-05 | 2015-12-16 | 陆月霞 | Preparation technology of biomass pesticide capable of preventing rice toxicity |
| CN113906940A (en) * | 2021-09-17 | 2022-01-11 | 广西壮族自治区中国科学院广西植物研究所 | Accurate and efficient pesticide spraying method |
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Application publication date: 20101222 |