CN102273447B - Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide and preparation method thereof - Google Patents
Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide and preparation method thereof Download PDFInfo
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- CN102273447B CN102273447B CN201110175566.4A CN201110175566A CN102273447B CN 102273447 B CN102273447 B CN 102273447B CN 201110175566 A CN201110175566 A CN 201110175566A CN 102273447 B CN102273447 B CN 102273447B
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Abstract
The invention discloses an abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide and a preparation method thereof. The abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide comprises the following ingredients in part by weight: 0.5 to 50 parts of abamectin, 5 to 50 parts of blue green algae powder, 1 to 20 parts of surfactant and 0.5 to 20 parts of easily degradable macromolecule. The blue green algae serving as a pesticide carrier is used for adsorbing the abamectin, delays decomposition of the abamectin caused by ultraviolet irradiation by the natural properties of the blue green algae, and can serve as organic fertilizer to increase yield of crops, so waste utilization of the pollutants is realized; the degradable macromolecules serve as a coating agent, so environmental protection is contributed; and the abamectin can be released in a controlled way by a sustained-release technology, so toxicity of the abamectin on people and livestock is reduced.
Description
Technical field
The present invention relates to a kind of abamectin insecticide, the preparation method of specifically a kind of Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide, and this abamectin insecticide.Belong to Avermectin pesticide field.
Background technology
Avermectin, English name Avermectins, its structural formula is as follows:
Its molecular formula is B
1bc
47h
70o
14, B
1ac
48h
72o
14; Molecular weight is B
1b, 858.1; B
1a, 872.1; Fusing point: 150-155 ℃; Vapour pressure (20 ℃): <2 * 10
-4mPa; Stability: good stability in the aqueous solution (25 ℃) of pH value 5-9; Responsive to strong acid and strong base; Under UV-irradiation, first can change 8,9-Z isomer into, then be degraded to unknown product.
Avermectin is new antibiotic, has novel structure, the dual-purpose feature of farming animals.Avermectin has very high biologically active to the insect of multiple kinds of crops.After making preparation, can be used as agricultural chemicals, veterinary drug, have wide spectrum, efficient, noresidue, the characteristic such as be difficult for developing immunity to drugs, can prevent and treat the insects such as harmful mite on the plants such as paddy rice, fruit tree, vegetables, flowers, cotton, tobacco and liriomyza bryoniae, diamond-back moth, cabbage caterpillar, cotton bollworm, pear sucker.In livestock breeding, Avermectin is used for killing the multiple parasite such as tick, mite, lice, flea, fly, maggot outside the animal bodies such as pig, ox, sheep, horse, rabbit, chicken.The usage amount of Avermectin is increasing in recent years, and annual value of production is to surpass 1,400,000,000 U.S. dollars.Applying of China's paddy field, surpass 200,000,000 mu times every year.
It is fast that the fatal shortcoming of Avermectin is that ultraviolet lighting decomposes, peasant will be repeatedly or excessive using just can effectively control insect pest, seriously lowered the insecticide efficiency of Avermectin.In the present invention, utilize blue-green algae can delay as farm chemical carrier this shortcoming that characteristic that ultraviolet lighting decomposes solves Avermectin.The cell wall of blue-green algae forms network structure by cellulose, itself is biological adsorption agent absorption Avermectin, and absorbs ultraviolet ray, alleviates Avermectin decomposition in the sun.The resource of blue-green algae is very abundant, has very strong resistance, widely distributed, and there is the existence of blue-green algae freshwater lake and ocean.But blue-green algae is broken out blue-green alga bloom under certain condition, severe contamination lake water quality, harm ecotope and human health, must be administered and be utilized.Only TAI HU AREA is just processed nearly 400,000 tons of blue-green algae for 1 year, and sufficient blue algae resource is provided, and has guaranteed need of production.
Avermectin is also high malicious to mammal, adopts slow release method, can make Avermectin slowly discharge, and gets final product kill pests, can make again toxicity be reduced to the scope to person poultry safety.We adopt easy degraded macromolecular as film forming agent, and Avermectin is prepared into slow-release microcapsule, so both can slowly discharge, and not affecting again its making becomes the dispersiveness after the formulations of pesticide, is convenient to spray.Environmentally safe after easy degraded macromolecular degraded.
We,, by patent consulting, not yet find that there is and utilize blue-green algae as carrier adsorption Avermectin, and rely on the Avermectin uvioresistant slow-release microcapsule insecticide of the anti-ultraviolet of self natural performance.
Comprehensive above-mentioned existing technology and Background of Academic Resources, we utilize environmental contaminants blue-green algae to improve Avermectin as farm chemical carrier to decompose fast shortcoming at ultraviolet lighting, application times and amount of application have been reduced, improve insecticide efficiency, person poultry toxicity is invented to a kind of Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide to reduction Avermectin and preparation method is very necessary.
Summary of the invention
The object of the invention is for a kind of Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide is provided.
Another object of the present invention is to provide this method for producing insecticide.
Object of the present invention can be achieved through the following technical solutions.
Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide, by weight, its component and content are:
Avermectin 0.5-50 part,
Blue algae powder 5-50 part,
Surfactant 1-20 part,
Easy degraded macromolecular 0.5-20 part.
Described blue-green algae is a kind of blue-green algae in Cyanophyta.
Described easy degraded macromolecular compound is methyl or carboxymethyl cellulose, polyvinyl acetate, polyvinylpyrrolidone, polyethylene glycol, hydroxyethylcellulose, polyvinyl alcohol, one or more mixing in soluble starch and corn starch.
Described surfactant is one or both mixing in carboxylate copolymer, EO/PO polyethers, formaldehyde condensation products, lignosulfonates, Hensel T-2700 advanced in years, Hensel T-2500 advanced in years, sieve sub-T36 in ground and wide source benefit agriculture D08 etc.
The preparation method of above-mentioned Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide, comprises the steps:
1) in reactor, Avermectin 0.5-50 part is dissolved in to organic solvent, and adds dried blue algae powder, in the gas bath oscillator under 25-30 ℃ of constant temperature, 20-30 hour is soaked in vibration;
2) easy degraded macromolecular 0.5-20 part is added in above-mentioned reactor, dispersed with stirring is even;
3) surfactant 1-20 part is poured in distilled water, be stirred to completely and dissolve;
4) by step 2) mix with step 3) product, send into high-speed shearing emulsion machine 8000-12000rpm speed and stir 10-20 minute; Temperature 40-80 ℃ steams all organic solvents, solidifies encystation, filters water outlet, obtains Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide.
Described organic solvent is toluene, acetone, isopropyl alcohol, chloroform, ethanol, methyl alcohol, propyl alcohol, a kind of in n-butanol and cyclohexane.
The present invention utilizes blue-green algae to adsorb Avermectin for farm chemical carrier, and relies on himself natural performance to delay Avermectin because of the decomposition that ultraviolet lighting produces, and can be used as again organic fertilizer application volume increase crop, realizes the twice laid of pollutant; Secondly, utilize degradable macromolecule for seed coating medicine, be beneficial to environmental protection.Again, utilize slow release method to make Avermectin reach controllable release, reduce Avermectin to person poultry toxicity.
Accompanying drawing explanation
Fig. 1 is that UV-irradiation decomposes contrast experiment figure;
Fig. 2 is the release dynamics figure of sustained release agent;
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, further set forth technical essential of the present invention.
Embodiment 1:
Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide, comprises the steps:
1) in reactor by 100 parts of organic solvents of 4 parts of Avermectin, be stirred to completely and dissolve.Add afterwards 20 parts of dried blue algae powders, at 25 ℃ of constant temperature, in gas bath oscillator, vibration was soaked after 24 hours;
2) 2 parts of easy degraded macromoleculars are added in above-mentioned reactor, dispersed with stirring is even;
3) surfactant of 3 parts is poured in the redistilled water of 100 parts, be stirred to completely and dissolve;
4) by step 2) product and step 3) after product mixes, first by high-shear emulsion machine, the speed with 12000rpm stirs 15 minutes, in temperature, is to steam organic solvent at 40 ℃, solidify encystation, filter water outlet, after being dried, obtain Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide.
Embodiment 2:
The preparation technology of Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide, comprises the steps:
1) in reactor by 100 parts of organic solvents of 5 parts of Avermectin, be stirred to completely and dissolve.Add afterwards 25 parts of dried blue algae powders, at 30 ℃ of constant temperature, vibration was soaked after 24 hours;
2) 3 parts of easy degraded macromoleculars are added in above-mentioned reactor, dispersed with stirring is even;
3) surfactant of 3 parts is poured in the redistilled water of 150 parts, be stirred to completely and dissolve;
4) by step 2) product and step 3) after product mixes, first by high-shear emulsion machine, the speed with 10000rpm stirs 15 minutes, in temperature, is to steam organic solvent at 50 ℃, solidify encystation, filter water outlet, after being dried, obtain Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide.
Embodiment 3:
The preparation technology of Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide, comprises the steps:
1) in reactor by 2.5 parts of Avermectin solutions in 35 parts of organic solvents are housed, be stirred to completely and dissolve.Add afterwards 15 parts of dried blue algae powders, in constant temperature gas bath oscillator, at 25 ℃, vibration was soaked after 20 hours;
2) 1.5 parts of easy degraded macromoleculars are added in above-mentioned reactor, are stirred to completely and dissolve;
3) surfactant of 2 parts is poured in the redistilled water of 100 parts, be stirred to completely and dissolve;
4) by step 2) after product mixes with step 3) product, first by high-shear emulsion machine, the speed with 10000rpm stirs 15 minutes, in temperature, is to steam organic solvent at 55 ℃, solidify encystation, filter water outlet, after being dried, obtain Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide.
Embodiment 4:
The preparation technology of Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide, comprises the steps:
1) in reactor, 3 parts of Avermectin are dissolved in and are equipped with in 25 parts of organic solvents, be stirred to completely and dissolve.Add afterwards 20 parts of dried blue algae powders, in constant temperature gas bath oscillator, at 30 ℃, vibration was soaked after 24 hours;
2) 1.5 parts of easy degraded macromoleculars are added in above-mentioned reactor, dispersed with stirring is even;
3) surfactant of 2 parts is poured in the redistilled water of 100 parts, be stirred to completely and dissolve;
4) by step 2) product and step 3) after product mixes, first by high-shear emulsion machine, the speed with 11000rpm stirs 15 minutes, in temperature, is to steam organic solvent at 45 ℃, solidify encystation, filter water outlet, after being dried, obtain Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide.
Embodiment 5
The preparation technology of Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide, comprises the steps:
1) 1 part of Avermectin is dissolved in the reactor that 150 parts of organic solvents are housed, is stirred to completely and dissolves.Add afterwards 10 parts of dried blue algae powders, in constant temperature gas bath oscillator, at 30 ℃, vibration was soaked after 30 hours;
2) 1 part of easy degraded macromolecular is added in above-mentioned reactor, dispersed with stirring is even;
3) surfactant of 1 part is poured in the redistilled water of 50 parts, be stirred to completely and dissolve;
4) by step 2) product and step 3) after product mixes, first by high-shear emulsion machine, the speed with 10000rpm stirs 15 minutes, in temperature, is to steam organic solvent at 45 ℃, solidify encystation, filter water outlet, after being dried, obtain Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide.
blue-green algae prevents that Avermectin ultraviolet light from decomposing check analysis
Through the UV-irradiation of 4 hours, the residual percentage of Avermectin covering without algae powder was 39%, and there is the residual percentage of the Avermectin that algae powder covers, was that 61%(is shown in Fig. 1).The residual percentage that has an Avermectin that algae powder covers is 1.56 times of covering without algae powder, has improved 56.4%.Illustrate that blue-green algae can significantly slow down the decomposition of ultraviolet light to Avermectin.
the release dynamics of sustained release agent
1%, the sustained release agent of 5%, 10% dressing discharge respectively 5 days, 13 days and 20 days, accumulative total release rate be respectively release rate 69.8%, 59.7% and 51.8% (seeing Fig. 2).
the test data of the performance of desinsection
< < agricultural chemicals field experiment criterion (one) the > > issuing according to medicine inspecting institute of the Ministry of Agriculture carries out, and formulation rate is 15gA.I/hm
2, every community area is 50m, and each is processed and repeats 4 times, establishes clear water contrast, and each is processed randomized arrangement and distributes, every community fixed point investigation 20 strain wild cabbages.Investigation insect population radix before dispenser, after medicine 1,3,7d investigate residual borer population alive, calculates insect population lethality, control efficiency, looks into the Gain weight of wild cabbage after 30 days by title fresh weight.There is remarkable result.
Test 1. poisoning mythimna separatas: dispenser is after 1 day, mythimna separata lethality 95.4%; After dispenser 3 days, mythimna separata lethality 93.5%; After dispenser 7 days, mythimna separata lethality 92.5%.
Test 2. poisoning mythimna separatas: dispenser is after 1 day, mythimna separata lethality 96.5%; After dispenser 3 days, mythimna separata lethality 94.1%; After dispenser 7 days, mythimna separata lethality 93.2%.
Test 3. poisoning mythimna separatas: dispenser is after 1 day, mythimna separata lethality 95.3%; After dispenser 3 days, mythimna separata lethality 93.1%; After dispenser 7 days, mythimna separata lethality 91.5%.
Test 4. poisoning mythimna separatas: dispenser is after 1 day, mythimna separata lethality 94.7%; After dispenser 3 days, mythimna separata lethality 93.6%; After dispenser 7 days, mythimna separata lethality 92.9%.
Test 5. poisoning mythimna separatas: dispenser is after 1 day, mythimna separata lethality 94.5%; After dispenser 3 days, mythimna separata lethality 93.3%; After dispenser 7 days, mythimna separata lethality 91.7%.
Claims (6)
1. Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide, is characterized in that: by weight, its component and content are:
Avermectin 0.5-50 part,
Blue algae powder 5-50 part,
Surfactant 1-20 part,
Easy degraded macromolecular 0.5-20 part.
2. Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide according to claim 1, is characterized in that: described blue-green algae is a kind of blue-green algae in Cyanophyta.
3. Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide according to claim 1, it is characterized in that: described easy degraded macromolecular compound is methyl or carboxymethyl cellulose, polyvinyl acetate, polyvinylpyrrolidone, polyethylene glycol, hydroxyethylcellulose, polyvinyl alcohol, one or more mixing in soluble starch and corn starch.
4. Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide according to claim 1, is characterized in that: described surfactant is one or both mixing in carboxylate copolymer, EO/PO polyethers, formaldehyde condensation products, lignosulfonates, Hensel T-2700 advanced in years, Hensel T-2500 advanced in years, sieve sub-T36 in ground and wide source benefit agriculture D08.
5. the preparation method of Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide described in claim 1, is characterized in that: comprise the steps:
1) in reactor, Avermectin 0.5-50 part is dissolved in to organic solvent, and adds dried blue algae powder, in the gas bath oscillator under 25-30 ℃ of constant temperature, 20-30 hour is soaked in vibration;
2) easy degraded macromolecular 0.5-20 part is added in above-mentioned reactor, dispersed with stirring is even;
3) surfactant 1-20 part is poured in distilled water, be stirred to completely and dissolve;
4) by step 2) with step 3) product mixes, send into high-speed shearing emulsion machine 8000-12000rpm speed and stir 10-20 minute; Temperature 40-80 ℃ steams all organic solvents, solidifies encystation, filters water outlet, obtains Abamectin-blue green algae ultraviolet-resistant sustained-release microcapsule pesticide.
6. preparation method according to claim 5, is characterized in that: described organic solvent is toluene, acetone, isopropyl alcohol, chloroform, ethanol, methyl alcohol, propyl alcohol, a kind of in n-butanol and cyclohexane.
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| CN103563893A (en) * | 2013-10-14 | 2014-02-12 | 广东中迅农科股份有限公司 | Slow release agent for pesticide granules |
| CN103875657B (en) * | 2014-04-03 | 2016-01-20 | 广州市微生物研究所 | A kind of uvioresistant agricultural water dispersible granule containing natamycin and preparation method thereof |
| CN106614658A (en) * | 2016-12-23 | 2017-05-10 | 芜湖福民生物药业股份有限公司 | Avermectin pesticide slow release agent and preparation method thereof |
| CN106614659A (en) * | 2016-12-23 | 2017-05-10 | 芜湖福民生物药业股份有限公司 | Abamectin pesticide slow-release agent and preparation method thereof |
| MY197729A (en) * | 2017-07-15 | 2023-07-11 | Arun Vitthal Sawant | Novel crop fortification, nutrition and crop protection composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1346260A (en) * | 1998-10-23 | 2002-04-24 | 诺华堡有限公司(Nouvabinc) | Solar radiation protection composition |
| CN1899038A (en) * | 2005-07-20 | 2007-01-24 | 吴学民 | Method for producing pesticide micro capsule |
| CN101830760A (en) * | 2010-05-11 | 2010-09-15 | 上海师范大学 | Emamectin benzoate-algae slow-release type microcapsule pesticide and preparation method thereof |
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| UA90503C2 (en) * | 2005-02-24 | 2010-05-11 | Сингента Партисипейшнс Аг | Method for controlling damage of material by pests, composition and capsule |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1346260A (en) * | 1998-10-23 | 2002-04-24 | 诺华堡有限公司(Nouvabinc) | Solar radiation protection composition |
| CN1899038A (en) * | 2005-07-20 | 2007-01-24 | 吴学民 | Method for producing pesticide micro capsule |
| CN101830760A (en) * | 2010-05-11 | 2010-09-15 | 上海师范大学 | Emamectin benzoate-algae slow-release type microcapsule pesticide and preparation method thereof |
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