CN101385475A - Slow-release natural insecticide - Google Patents
Slow-release natural insecticide Download PDFInfo
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- CN101385475A CN101385475A CNA2008102158885A CN200810215888A CN101385475A CN 101385475 A CN101385475 A CN 101385475A CN A2008102158885 A CNA2008102158885 A CN A2008102158885A CN 200810215888 A CN200810215888 A CN 200810215888A CN 101385475 A CN101385475 A CN 101385475A
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Abstract
The invention relates to a slow release natural pesticide, consisting of patchouli essential oil, an emulsifying agent and a slow release formulation; wherein, the emulsifying agent is non-ionic surfactant, the slow release formulation is alginate, cellulose or cyclodextrin. The preparation method comprises the following steps: 0.1 percent to 7.0 percent of patchouli essential oil is dispersed into the non-ionic surfactant, and the obtained mixture is mixed with the alginate, cyclodextrin or cellulose, then the mixture is dried and granulated; the preferable condition is that 0.25 percent to 4.00 percent of patchouli essential oil is dispersed into 4.0 percent to 10.0 percent of polyoxyethylene sorbitan monooleate, the obtained mixture is mixed and stirred with sodium alginate or Beta-cyclodextrin or carboxymethyl cellulose for 5 to 20min at the temperature of 10 to 100 DEG C and with the speed being 500 to 2,000r/min, then the mixture is dried and granulated. The slow release natural pesticide has the advantages of single object organism, safe non-target organism, high activity, no residue and easy degradation, and is applicable to long and effective prevention of crop diseases.
Description
Technical field
The present invention relates to a kind of slow-release natural insecticide, relate in particular to a kind of slow-release natural vegetable insecticide that is used for crop pest control, and preparation method thereof, the platymiscium agricultural chemicals.
Technical background
China is pesticide producing big country in the world, and the disease pest and weed of controlling crops with chemical pesticide is the essential condition of modern big agriculture commercial agriculture.But chemical pesticide also brings problems such as more and more serious pollution, residual hazard and pesticide resistance in extensive use, caused social concern.Many countries all drop into the exploitation that sizable strength is devoted to novel agrochemical.And along with the banning use of of many high toxicities, high residue and persistent pesticide, people turn to sight to the pest high activity, to non-target organism safety, low-residual, the easy agricultural chemicals of degraded.The natural green bio agricultural chemicals of exploitation is the good footpath that addresses this problem from the plant extract material.
Many plants essential oils have effects such as poisoning, repellent and food refusal to crop pest, can be used as environmental protection type agricultural chemical.Pogostemon cablin is a kind of Labiatae thorn stamen grass platymiscium, is distributed widely in provinces and regions such as Guangdong, Guangxi, Hainan, Yunnan and Taiwan, especially on the ground such as Guangzhou, Zhaoqing and Zhanjiang in Guangdong Province, rich natural resource is arranged.Pogostemon cablin is one of traditional Chinese medicine of using always, contains abundant volatile oil, tool fragrance, and the Pharmacopoeia of the People's Republic of China (version in 2005) has been included multiple Pogostemon cablin preparation, is used for the treatment of abdominal distention, vomiting and diarrhoea and dysentery etc. clinically.There are some researches show that Herba Pogostemonis essential oil is inhibited to common pathogenic entero becteria, tens kinds of skin pathogenic bacteria and various plants pathogen; The cruel protozoon of the Bai Shi that parasitizes human body also there is the poisoning synergistic effect.
As everyone knows, the pesticide slow-release technology can be controlled burst size, release time and the Free up Memory of agricultural chemicals.With natural, biodegradable macromolecular compound as slow-release material, absorption desinsection, bactericide or growth regulator in some is compound with it, be processed into granular pesticide with sustained release performance, hidden dispenser by a small amount of number of times, can prevent and treat the damage by disease and insect or the control excessive growth of crop whole growing (or certain breeding time), represent the developing direction of the formulations of pesticide.
Yet, in the industry present, be not the natural green biological agricultural chemicals with slow release method of functional component still with the Herba Pogostemonis essential oil.
Summary of the invention
The purpose of this invention is to provide a kind of slow-release natural insecticide, and preparation method thereof, adopt Herba Pogostemonis essential oil as functional component, the application ionic surfactant pack is wrapped up in, be prepared into slow-releasing granules, have that the prevention and control biological object is single-minded, non-target organism safety, the advantage of slow release long-acting, high activity noresidue, easily biological-degradable is suitable for the long-acting control of diseases and pests of agronomic crop.
Purpose of the present invention is achieved through the following technical solutions: be made up of Herba Pogostemonis essential oil, emulsifier, alginate or cellulose or cyclodextrin, emulsifier wherein is a non-ionic surface active agent, and sustained release agent is one or more the mixture in alginate, cellulose, the cyclodextrin.The preparation method is: Herba Pogostemonis essential oil is scattered in the non-ionic surface active agent with 0.1%～7.0% ratio, after alginate or cellulose or cyclodextrin mix, carries out drying and granulating.
The essential oil of natural insecticide functional component used in the present invention for extracting from Pogostemon cablin, purity is greater than 95.0%.
Emulsifier used in the present invention is a non-ionic surface active agent, comprises aliphatic alcohol polyethenoxy class, polyoxyethylene alkylphenol ether class, Sulfonates, sulfonic acid esters, amide-type, silicone based.Wherein, be preferably polyoxyethylene fatty acid ester, particularly Polyoxyethylene Sorbitol Fatty Acid Esters (tween).
Sustained release agent used in the present invention is alginate or cellulose or cyclodextrin.Wherein, preferred sustained release agent is sodium alginate, carboxymethyl cellulose and beta-schardinger dextrin-, can be one or more mixture wherein.
Preparation method used in the present invention, be at first purity to be dispersed in 0.2%～5.0% ratio greater than 95.0% Herba Pogostemonis essential oil in 1.0%～20.0% the polyoxyethylene fatty acid ester, make the emulsifier of Herba Pogostemonis essential oil, under heating and stirring condition,, carry out drying, granulation with after sustained release agent (0.1%～3.0%) mixes.
Preferred manufacturing procedure of the present invention is that purity is dispersed in 0.25%～4.00% ratio greater than 95% Herba Pogostemonis essential oil in 2.0%～12.0% the Polyoxyethylene Sorbitol Fatty Acid Esters, under 10～100 ℃, 500～2000r/min with sodium alginate or carboxymethyl cellulose or cyclodextrin in one or more mixture mix 5～20min after, carry out drying, granulation.
The further optimum condition of the present invention is, and to be 98% Herba Pogostemonis essential oil with purity be dispersed in 4.0%～10.0% the polyoxyethylenesorbitan sorbitan monooleate (Tween-80) with 0.25%～4.00% ratio, after under 30～60 ℃, 1000～2000r/min, mixing 5～20min, carry out drying and granulating with sodium alginate or beta-schardinger dextrin-or carboxymethyl cellulose.
The present invention can be used for the extermination of disease and insect pest of crops.Compare with insecticide in the past, the present invention has the following advantages:
1. natural green pesticide.Pogostemon cablin itself is a kind of traditional natural medicinal plant, and the Herba Pogostemonis essential oil that extracts from Pogostemon cablin has safety non-toxic, biodegradable green, environmental protection characteristic.
2. has single-minded effective object, to non-target organism safety.Herba Pogostemonis essential oil has stronger food refusal effect to santal white butterfly and lichee leaf roller larva, and imported cabbageworm and diamondback moth larvae have food refusal preferably and toxic action, and prodenia litura is also had stronger food refusal effect.
3. have slowly-releasing, long-acting characteristics, application times is few, can prevent and treat the damage by disease and insect of the whole growing (or certain breeding time) of crop.
4. Pogostemon cablin has distribution, especially ground such as Guangdong, Guangxi and Hainan comparatively widely in China, and distribution is wide, reserves are big, and the scale exploitation for this plant provides rich raw material basis.
Embodiment
Below in conjunction with embodiment, the invention will be further described.The specific descriptions of embodiment do not constitute any limitation scope of the present invention.
The preparation of embodiment 1 Herba Pogostemonis essential oil slow-release natural insecticide
Get purity and be 98.0% Herba Pogostemonis essential oil, ratio with 0.10% is dispersed in 16.0% the dodecyl phenol polyethenoxy ether, under 38 ℃, the stirring of 800r/min, 12min, be mixed in 2.0% the sodium alginate soln, after 10 ℃ of following freeze dryings, pulverize and obtain the Herba Pogostemonis essential oil particle of average grain diameter less than 0.3mm, water content is less than 3.5%.
The preparation of embodiment 2 Herba Pogostemonis essential oil slow-release natural insecticides
Get purity and be 98.0% Herba Pogostemonis essential oil, ratio with 0.25% is dispersed in 10.0% the dodecyl sodium sulfonate calcium, under 35 ℃, the stirring of 1000r/min, 15min, be mixed in 2.0% the solution of forming at 3: 1 by the mass mixing ratio example by sodium alginate and carboxymethyl cellulose, 45 ℃ of following vacuum dryings, pulverize the back and obtain the Herba Pogostemonis essential oil particle of average grain diameter less than 0.3mm, water content is less than 3.0%.
The preparation of embodiment 3 Herba Pogostemonis essential oil slow-release natural insecticides
Get purity and be 98.0% Herba Pogostemonis essential oil, ratio with 0.30% is dispersed in 1.0% the triphen ethyl-phenol polyoxy ethyl ether, under 40 ℃, the stirring of 1000r/min, 10min, be mixed in 1.0% the solution of forming at 1: 4 by the mass mixing ratio example by sodium alginate and beta-schardinger dextrin-, 95 ℃ of following atomized dryings, obtain the Herba Pogostemonis essential oil particle of average grain diameter less than 0.3mm, water content is less than 3.2%.
The preparation of embodiment 4 Herba Pogostemonis essential oil slow-release natural insecticides
Get purity and be 98.5% Herba Pogostemonis essential oil, ratio with 2.60% is dispersed in 5.8% the polyoxyethylenesorbitan sorbitan monooleate, under 50 ℃, the stirring of 1500r/min, 15min, be mixed in 0.5% the cmc soln, 80 ℃ of following atomized dryings, obtain the Herba Pogostemonis essential oil particle of average grain diameter less than 0.5mm, water content is less than 3.5%.
The preparation of embodiment 5 Herba Pogostemonis essential oil slow-release natural insecticides
Get purity and be 98.0% Herba Pogostemonis essential oil, ratio with 3.20% is dispersed in 7.0% the dodecyl sodium sulfonate calcium, under 55 ℃, the stirring of 1200r/min, 8min, be mixed in 2.5% the beta-schardinger dextrin-solution, 90～95 ℃ of following atomized dryings, obtain the Herba Pogostemonis essential oil particle of particle diameter at 0.1～0.3mm, water content is less than 3.0%.
The preparation of embodiment 6 Herba Pogostemonis essential oil slow-release natural insecticides
Get purity and be 98.5% Herba Pogostemonis essential oil, ratio with 4.00% is dispersed in 5.0% the polyoxyethylenesorbitan sorbitan monooleate, under 50 ℃, the stirring of 1200r/min, 8min, be mixed in 3.0% the solution of forming at 1: 5 by the mass mixing ratio example by carboxymethyl cellulose and beta-schardinger dextrin-, 100 ℃ of following atomized dryings, obtain the Herba Pogostemonis essential oil particle of particle diameter less than 0.3mm, water content is less than 3.0%.
The preparation of embodiment 7 Herba Pogostemonis essential oil slow-release natural insecticides
Get purity and be 98.0% Herba Pogostemonis essential oil, ratio with 5.00% is dispersed in 4.0% the trifluoroethyl perfluoro butyl sulphonic acid ester, under 45 ℃, the stirring of 800r/min, 15min, be mixed in 1.5% the sodium alginate soln, 95 ℃ of following atomized dryings, obtain the Herba Pogostemonis essential oil particle of average grain diameter less than 0.3mm, water content is less than 3.2%.
The preparation of embodiment 8 Herba Pogostemonis essential oil slow-release natural insecticides
Get purity and be 98.5% Herba Pogostemonis essential oil, ratio with 7.00% is dispersed in 20.0% the phenethyl phenol formaldehyde (PF) tree vinegar polyoxy ethyl ether, under 45 ℃, the stirring of 800r/min, 15min, be mixed in 3.0% the solution of forming at 1: 2: 3 by the mass mixing ratio example by sodium alginate, carboxymethyl cellulose and cyclodextrin, 95 ℃ of following atomized dryings, obtain the Herba Pogostemonis essential oil particle of average grain diameter less than 0.3mm, water content is less than 3.2%.
Embodiment 9 Herba Pogostemonis essential oil slow-release pesticides are to the non-selective food refusal effect of santal white butterfly larva
For trying insecticide: product of the present invention (Herba Pogostemonis essential oil slow-release pesticide)
Supply the examination insect: the santal larva of firm hatching, put into big plastic casing, feed with the tender santal leaf of children, treat to supply when larva grew to for 5 ages examination.
Method: cut-off is the culture dish of 9cm directly, preserves moisture with wet filter paper at the bottom of the culture dish.In same culture dish, put into and handle the leaf dish and contrast each 4 pieces in leaf dish.Contrast leaf dish is then put into another culture dish.All insert the confession examination larva of 1 hungry 4h, establish 6 repetitions.Take out remaining blade at 24h and 48h respectively, measure the quilt of leaf dish with squared paper and get the food area.
The calculating of food refusal rate: non-selective food refusal rate=(S
Ck-S)/S
Ck, wherein: S
CkOn average get the food area for contrast leaf dish; S on average gets the food area for what handle the leaf dish.
The result shows (table 1), and product of the present invention has good food refusal effect to the santal white butterfly, and the food refusal rate increases along with the increase of dosage; Along with the prolongation of time, the food refusal rate changes little, and it is long-lasting preferably to show that product of the present invention has.
Table 1 Herba Pogostemonis essential oil slow-release pesticide is to the non-selective food refusal effect of santal white butterfly larva
Embodiment 10 Herba Pogostemonis essential oil slow-release pesticides are to the non-selective food refusal effect of lichee leaf roller larva
Supply the examination insect: the brown belt length leaf roller of the lichee larva of firm hatching, put into big plastic casing, feed with the tender lychee leaf of children, treat to supply when larva grew to for 5 ages examination.
Method: with embodiment 9.
The result shows (table 2), and product of the present invention is to planting the face powder butterfly and lichee leaf roller larva all has food refusal effect preferably, and the food refusal rate increases along with the increase of dosage; Along with the prolongation of time, the food refusal rate changes little, and it is long-lasting preferably to show that product of the present invention has, and santal white butterfly larva is more responsive to this insecticide.
Table 2 Herba Pogostemonis essential oil slow-release pesticide is to the non-selective food refusal effect of lichee leaf roller larva
Embodiment 11 Herba Pogostemonis essential oil slow-release pesticides are to the selectivity food refusal effect of santal white butterfly larva
Supply the examination insect: the santal larva of firm hatching, put into big plastic casing, feed with the tender santal leaf of children, treat to supply when larva grew to for 5 ages examination.
Method: cut-off is the culture dish of 9cm directly, preserves moisture with wet filter paper at the bottom of the culture dish.In same culture dish, put into and handle the leaf dish and contrast each 2 pieces in leaf dish, cross arrangement.Insert the confession examination larva of 1 hungry 4h, establish 6 repetitions.72h takes out remaining blade, measures the quilt of leaf dish with squared paper and gets the food area.
The food refusal rate is calculated: selectivity food refusal rate=(S
Ck-S)/(S
Ck+ S).
The result shows (table 3), and product of the present invention is very strong to the selectivity food refusal effect of santal white butterfly larva.
Table 3 Herba Pogostemonis essential oil slow-release pesticide is to the selectivity food refusal effect of santal white butterfly larva
Embodiment 12 Herba Pogostemonis essential oil slow-release pesticides are to the selectivity food refusal effect of lichee leaf roller larva
Supply the examination insect: the brown belt length leaf roller of the lichee larva of firm hatching, put into big plastic casing, feed with the tender lychee leaf of children, treat to supply when larva grew to for 5 ages examination.
Method: with embodiment 11.
The result shows (table 4), and product of the present invention has clearly effect to the selectivity food refusal effect of lichee leaf roller larva.
Table 4 Herba Pogostemonis essential oil slow-release pesticide is to the selectivity food refusal effect of lichee leaf roller larva
Embodiment 13 Herba Pogostemonis essential oil slow-release pesticides are to the deterrent effect of santal white butterfly larva
Supply the examination insect: the santal larva of firm hatching, put into big plastic casing, feed with the tender santal leaf of children, treat to supply when larva grew to for 5 ages examination.
Method: get the branch of fresh and tender no worm, this product evenly is coated with glues thereon, get the 250mL beaker, rim of a cup is put a circular hard paper, the place's of keeping to the side relative direction is made a call to two holes, gets one and handles a branch and a contrast branch (top sticking a little this product), and insert in the beaker in the hole of passing on the scraps of paper.Clip contains several in the blade of santal white butterfly larva, place in the middle of the scraps of paper, by the time blade withered after, the santal white butterfly just can be fled from by larva automatically.Behind the certain hour, judge the deterrent effect of this processing to the santal white butterfly with the santal white butterfly larva number of handling and contrast land on the branch.
Avoiding the rate of keeping away calculates as follows: avoid the rate of keeping away (%)=(contrast branch borer population-processing branch borer population)/contrast branch borer population * 100%.
The result shows (table 5), and product of the present invention has deterrent effect to santal white butterfly larva.
Table 5 Herba Pogostemonis essential oil slow-release pesticide is to the deterrent effect of santal white butterfly larva
Embodiment 14 Herba Pogostemonis essential oil slow-release pesticides are to the deterrent effect of lichee leaf roller larva
Supply the examination insect: the brown belt length leaf roller of the lichee larva of firm hatching, put into big plastic casing, feed with the tender lychee leaf of children, treat to supply when larva grew to for 5 ages examination.
Method: be divided into two halves with rectangle 5 * 10cm filter paper, half is for handling, and half is contrast.Get the Pogostemon cablin insecticide and evenly stick on the filter paper, make the zone leveling pharmaceutical quantities on the filter paper reach 0.5mg/cm respectively
2, 1.0mg/cm
2, 2.0mg/cm
2, 4.0mg/cm
2, 8.0mg/cm
2, sticking 1mg insecticide will be handled and contrast two half of filter paper and couple together with transparent adhesive tape at reverse side in the contrast, put into the rectangular plastic magazine.20 lichee leaf rollers are inserted in the plastic casing, be allowed to condition on the filter paper and freely creep.Each is checked and once contrasts and handle the borer population that distributes in two zones after 4 hours and 24 o'clock.Avoiding the rate of keeping away calculates as follows:
Avoid the rate of keeping away (%)=(check plot borer population-treatment region borer population)/check plot borer population * 100%.
The result shows (table 6), and product of the present invention has deterrent effect to lichee leaf roller larva.
Table 6 Herba Pogostemonis essential oil slow-release pesticide is to the deterrent effect of lichee leaf roller larva
Embodiment 15 Herba Pogostemonis essential oil slow-release pesticides are to the non-selective food refusal effect of feeding of Spodoptera litura larvae
For trying insect: Spodoptera litura larvae.Adopt back the prodenia litura pieces of an egg from the field and be put in the culture dish of preserving moisture, treat that the ovum hatching for behind the larva, changes in the big glass jar, feed with cassava leaves, when larva grew to for 3 ages, the larva of picking neat and consistent was for trying.
Method: with embodiment 9.
The result shows (table 7), and product of the present invention has the food refusal effect to Spodoptera litura larvae.
Table 7 Herba Pogostemonis essential oil slow-release pesticide is to the non-selective food refusal effect of Spodoptera litura larvae
Embodiment 16 Herba Pogostemonis essential oil slow-release pesticides are to the food refusal effect of feeding of the selectivity of Spodoptera litura larvae
For trying insect: Spodoptera litura larvae.
Method: with embodiment 11.
The result shows (table 8), and product of the present invention shows tangible food refusal effect to Spodoptera litura larvae.
Table 8 Herba Pogostemonis essential oil slow-release pesticide is to the selectivity food refusal effect of Spodoptera litura larvae
Embodiment 17 Herba Pogostemonis essential oil slow-release pesticides are to the non-selective food refusal effect of cabbage caterpillar
For trying insect: cabbage caterpillar.Imported cabbageworm pupa and the high instar larvae adopted are back raised, be collected in behind the larvae pupation in the big culture dish, move in the dependent insect cage of long 50cm, wide 60cm, high 80cm during emergence, put into potted plant Jie's indigo plant in the cage, and in cage, flood 10% honey liquid, supplement the nutrients for adult with cotton, allow adult on cabbage mustard, lay eggs, take out after 2 days, treat that ovum hatches into behind the larva a collection of larva is collected in the big glass jar to feed, treat that it is used for testing when growing to 4 instar larvaes with Jie's indigo plant or wild cabbage.
Method: with embodiment 9.
The result shows that product of the present invention has significant food refusal effect to cabbage caterpillar.
Table 9 Herba Pogostemonis essential oil slow-release pesticide is to the non-selective food refusal effect of cabbage caterpillar
Embodiment 18 Herba Pogostemonis essential oil slow-release pesticides are to the non-selective food refusal effect of diamondback moth larvae
For trying insect: diamondback moth larvae.Getting high instar larvae breeds at indoor feeding, treat to collect when it is pupated pupa in culture dish, connect culture dish after the emergence and put into the little dependent insect cage of long 50cm, wide 60cm, high 80cm together, be placed with the plastic casing of long 30cm, wide 20cm, high scm in the cage, it is the adult extra-nutrition that the interior kind of basin has the dish stem seedling of 2 leaf sizes and 10% honey, allow adult on potted plant dish falls seedling, lay eggs, treat to supply when larva grew to for 3 ages examination.
Method: with example 9.
The result shows (table 10), and product of the present invention has strong food refusal effect to diamondback moth larvae.
Table 10 Herba Pogostemonis essential oil slow-release pesticide is to the non-selective food refusal effect of diamondback moth larvae
Embodiment 19 Herba Pogostemonis essential oil slow-release pesticides are to the selectivity food refusal effect of cabbage caterpillar
For trying insect: cabbage caterpillar.
Method: with embodiment 11.
The result shows (table 11), and product of the present invention shows strong food refusal effect to cabbage caterpillar.
Table 11 Herba Pogostemonis essential oil slow-release pesticide is to the selectivity food refusal effect of cabbage caterpillar
Claims (11)
1. a slow-release natural insecticide is made up of Herba Pogostemonis essential oil, emulsifier, sustained release agent.
2. slow-release natural insecticide as claimed in claim 1, it is characterized in that described emulsifier is a non-ionic surface active agent, comprise aliphatic alcohol polyethenoxy class, polyoxyethylene alkylphenol ether class, Sulfonates, sulfonic acid esters, amide-type, silicone based any or more than one mixture.
3. slow-release natural insecticide as claimed in claim 2 is characterized in that described emulsifier is a polyoxyethylene fatty acid ester,
4. slow-release natural insecticide as claimed in claim 3 is characterized in that described emulsifier is a Polyoxyethylene Sorbitol Fatty Acid Esters.
5. slow-release natural insecticide as claimed in claim 1 is characterized in that described sustained release agent is one or more the mixture in alginate, cellulose or the cyclodextrin,
6. slow-release natural insecticide as claimed in claim 1 is characterized in that described sustained release agent is any of sodium alginate, carboxymethyl cellulose or beta-schardinger dextrin-or more than one mixture.
7. the preparation method of a slow-release natural insecticide, it is characterized in that Herba Pogostemonis essential oil is dispersed in 0.20%～5.00% ratio in 1.0%～20.0% the non-ionic surface active agent, under 10～100 ℃, 500～2000r/min with alginate, cellulose or cyclodextrin in any or more than one mixture mix 5～20min after, carry out drying and granulating.
8. want the preparation method of 7 described slow-release natural insecticides as right, it is characterized in that Herba Pogostemonis essential oil is dispersed in 0.20%～5.00% ratio in 1.0%～20.0% the polyoxyethylene fatty acid ester, under 10～100 ℃, 500～2000r/min with sodium alginate, carboxymethyl cellulose or beta-schardinger dextrin-in any or more than one mixture mix 5～20min after, carry out drying and granulating.
9. the preparation method of slow-release natural insecticide as claimed in claim 8, it is characterized in that described preparation method is for being dispersed in greater than 95% Herba Pogostemonis essential oil purity in 2.0%～12.0% the Polyoxyethylene Sorbitol Fatty Acid Esters with 0.25%～4.00% ratio, under 10～100 ℃, 500～2000r/min with sodium alginate or carboxymethyl cellulose or beta-schardinger dextrin-in one or more mixture mix 5～20min after, carry out drying, granulation.
10. the preparation method of slow-release natural insecticide as claimed in claim 9, it is characterized in that described preparation method is dispersed in 4.0%～10.0% the polyoxyethylenesorbitan sorbitan monooleate with 0.25%～4.00% ratio for being 98% Herba Pogostemonis essential oil with purity, after under 30～60 ℃, 1000～2000r/min, mixing 5～20min, carry out drying, granulation with sodium alginate or carboxymethyl cellulose or beta-schardinger dextrin-.
11, a kind of slow-release natural insecticide is used for the purposes of medicine aspect the extermination of disease and insect pest of crops in preparation, it is characterized in that slow-release natural insecticide, is made up of Herba Pogostemonis essential oil, emulsifier, sustained release agent.
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| CN102084863A (en) * | 2011-03-01 | 2011-06-08 | 刘鹏 | Slow-release preparation of slow-release thiadiazine substances |
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| CN102084863A (en) * | 2011-03-01 | 2011-06-08 | 刘鹏 | Slow-release preparation of slow-release thiadiazine substances |
| CN102165952A (en) * | 2011-03-01 | 2011-08-31 | 刘鹏 | Sustained-release benzothiazole ammonium salt |
| CN105994273A (en) * | 2016-06-14 | 2016-10-12 | 青岛博智汇力生物科技有限公司 | Efficient ecological insecticidal fungicide with slow release function and using method and application thereof |
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