CN103651616A - Pesticide containing potato and derris elliptica extracts, and preparation method and application thereof - Google Patents
Pesticide containing potato and derris elliptica extracts, and preparation method and application thereof Download PDFInfo
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Abstract
The invention relates to the field of pesticides, in particular to a pesticide containing potato and derris elliptica extracts, and a preparation method and application thereof. Active ingredients of the pesticide containing the potato and derris elliptica extracts are extracted from 1 weight part of potato and 1 to 8 weight parts of derris elliptica. The pesticide containing the potato and derris elliptica extracts has a synergistic effect, has an obvious effect of controlling Homoptera and Lepidoptera pests, can strengthen immune systems of plants while quickly killing the pests, and can obviously improve plant vitality; the pesticide is prepared from Chinese herbal medicines, so the problem of pesticide residue is solved and the pests hardly generate resistance; during use, the effective concentration is low and the cost is low.
Description
Technical field
The present invention relates to pesticide field, particularly a kind of agricultural chemicals that contains potato and Derris ellipta extract and its production and use.
Background technology
In recent years, in agriculture and forestry field, due to single drug and Scientific Usage of Drugs not, plant pest has produced pesticide resistance in various degree, and agriculture and forestry are produced still with chemical pesticide as mainly preventing and treating kind, have caused the destruction increasingly of environmental pollution and ecotope.Along with the raising of people's living standard and the enhancing of health perception, the development of biopesticide and exploitation just progressively receive agricultural chemicals R&D worker's concern, become the focus of agriculture and forestry sustainable development, simultaneously, also be to improve environment, the effective way of minimizing or delaying drug resistance and raising drug effect.Wherein, botanical pesticide has become one of focus of biopesticide research.
Potato is important in the world crops, China is as the plantation big country of potato, in recent years, owing to being subject to potato edible consumption demand and the excitation of the sought-after growth of industrial processes and providing powerful support for of government policy, potatoes cultivated area and output increase rapidly.2013, national potato planting area surpassed 4,670,000 m
2, become an important channel that solves food problem and increasing peasant income.Yet the stem of potato, leaf etc. are also underutilized, and have caused the waste of resource.
For the present situation of a large amount of plantations of potato, the cauline leaf solving before potato is received is all generally give it up or burn.Research shows, every kilogram of potato haulm is containing 0.12 fodder unit, digestible protein 20～40g, carotin 80mg, dry matter content can reach 18.4%, and gross protein value accounts for 16.2% of dry matter, crude fiber content accounts for 20.8% of dry matter, crude fat content accounts for 1.8% of dry matter, and calcium content accounts for 1.39% of dry matter, and phosphorus content accounts for 0.14% of dry matter.But the noxious materials such as potato haulm content solanine, are machined directly to feed, and livestock is had to larger toxicity.
If utilize these discarded objects to produce agricultural chemicals, both increased quantity and the raw material sources of agricultural insecticide, further developed resource.Have not yet to see potato for the preparation of the report of agricultural insecticide.
Summary of the invention
Technical problem to be solved by this invention has been to provide a kind of agricultural chemicals that contains potato and Derris ellipta extract, and this agricultural chemicals is for the control to insect pests such as Homoptera, lepidoptera pests.
Technical scheme of the present invention is:
The agricultural chemicals that contains potato and Derris ellipta extract, its active component is formed by the crude drug extraction of following weight portion: 1 part of potato, 1～8 part of Derris ellipta.
Wherein, active component is preferably formed by the crude drug extraction of following weight portion: 1 part of potato, 1～5 part of Derris ellipta; The crude drug extraction being preferably again by following weight portion forms: 1 part of potato, 1～3 part of Derris ellipta; The more preferably crude drug extraction by following weight portion forms: 1 part of potato, 1 part of Derris ellipta.
Wherein, in order to improve the present invention containing the activity of the agricultural chemicals of potato and Derris ellipta extract, Derris ellipta preferably uses dry root, and potato is preferably used dry stem, leaf portion.
Agricultural chemicals of the present invention, after its active component can be mixed by crude drug potato and Derris ellipta, common extraction forms; Also potato can be extracted and obtains potato extract separately, Derris ellipta extracts and obtains Derris ellipta extract separately, then two kinds of extracts are mixed.In order to improve the insecticidal properties of agricultural chemicals of the present invention, after its active component is preferably and is mixed by potato and Derris ellipta, common extraction forms.
Further, in order to improve the stability containing the agricultural chemicals of potato and Derris ellipta extract, in agricultural chemicals containing potato and Derris ellipta extract of the present invention, also comprise auxiliary agent, described auxiliary agent can adopt the usual auxiliaries in agricultural chemicals, as at least one in emulsifier, antifreeze, solvent, defoamer, dispersant, wetting agent, stabilizing agent.
Wherein, emulsifier can adopt at least one in non-ionic surface active agent or anion surfactant, described non-ionic surface active agent can be dibenzyl xenyl APEO, styryl phenyl APEO, styryl phenyl APEO, phenethyl phenyl polyoxyethylene one polyethenoxy ether, OPEO, alkylphenol polyoxyethylene sulfosuccinate, aliphatic acid polyethenoxy ether, fatty alcohol-polyoxyethylene ether, aliphatic amine polyoxyethylene ether, castor oil ethylene oxide adduct and derivative thereof, at least one in polyol fatty acid ester and ethylene oxide adduct etc. thereof, described anion surfactant is at least one in calcium dodecyl benzene sulfonate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy ether phosphate etc., as emulsifier 500,601p, 602p etc., in addition, can also use commercially available emulsifier production.
Wherein, solvent can adopt at least one in water, ethanol, isopropyl alcohol, n-butanol, ethyl acetate, butyl acetate, methyl-sulfoxide, turpentine oil, solvent naphtha, 1-METHYLPYRROLIDONE, dimethyl formamide etc.
Wherein, antifreeze can be glycerine, propane diols, ethylene glycol, sodium chloride, calcium chloride, sorbierite etc.
Wherein, defoamer is silicone defoaming agent etc.; Described dispersant is at least one in lignosulfonates, PAA and propionamide copolymer, alkylnaphthalene sulfonate, polycarboxylic acid salt's condensation product, methyl sodiosul foaliphatate etc.
Wherein, wetting agent can be alkyl sulfate, alkylbenzenesulfonate, alkylnaphthalene sulfonate, aliphatic alcohol polyethenoxy base ether, alkylphenol-polyethenoxy base ether, sorbitan fatty acid ester etc.
Wherein, stabilizing agent can be 2-expoxy propane, butyl glycidyl ether, isopropyl alcohol, n-butanol, polyethylene glycol etc.
Agricultural chemicals containing potato and Derris ellipta extract of the present invention can be made microemulsion, aqua or soluble concentrate.
Further, when the agricultural chemicals that contains potato and Derris ellipta extract is made aqua, by the component of following weight portion, formed: 40 parts of potato and Derris ellipta extracts, 19 parts of emulsifier, 10 parts of solvents, 5 parts of antifreezes, water adds to 100 parts; Wherein, potato and Derris ellipta extract are that potato and Derris ellipta mix in proportion rear common extraction and obtain; Also can take in proportion potato and Derris ellipta, after extracting separately, be mixed to get.
Further, for the ease of storing and transportation, extract can be concentrated and obtains concentrate, and then be prepared into various formulations, cycles of concentration can be adjusted voluntarily according to needs of production.Wherein, the concentration of potato and Derris ellipta extract is preferably potato and the Derris ellipta extract after extracting to be concentrated into weight identical with crude drug weight.
Second technical problem that the present invention solves is to provide preparation containing the method for the agricultural chemicals of potato and Derris ellipta extract.
The preparation method of the agricultural chemicals containing potato and Derris ellipta extract of the present invention is comprised of following steps:
A, extraction: take Derris ellipta and potato granular, mix, by solid-liquid ratio, 1:3～12g/ml adds solvent, in 60～95 ℃ of refluxing extraction, filter, and obtains extract, and wherein, described solvent is organic solvent or water;
B, preparation: extract is made to microemulsion, soluble concentrate or aqua.
Wherein, Derris ellipta particle and potato granular can adopt commercially available particle, also can adopt conventional method pulverizing Derris ellipta root and potato haulm to obtain.In order to improve the effect of extraction, simultaneously cost-saving, Derris ellipta and potato granular are crossed 60～100 mesh sieves, preferred mistake 80 mesh sieves.
Further, for cost-saving, simultaneously also in order to improve extraction efficiency, the solid-liquid ratio in a step is preferably 1:4～10g/ml, more preferably 1:9g/ml.The Derris ellipta and the potato that are lg can add 3～12ml solvent extraction, preferably add 4～10ml, more preferably add 9ml.
Conventional organic solvent all can be used for the present invention, for cost-saving, improves dissolution rate, guarantees extraction efficiency simultaneously, and organic solvent is preferably methyl alcohol, ethanol, ethyl acetate, at least one of acetone, chloroform or water, more preferably absolute ethyl alcohol.
In order to shorten preparation time, accelerate extraction rate, can when adding hot reflux, stir, mixing speed is preferably 80～100 revs/min.
Further, reflux temperature is preferably 75～85 ℃, more preferably 82 ℃; Reflow's cycle is twice, and each return time is 2 hours, and merging filtrate, obtains extract.
The present invention also provides the application of the agricultural chemicals containing Derris ellipta and potato extract of the present invention in control crop pest.Agricultural chemicals containing Derris ellipta and potato extract of the present invention, has good preventive effect to homoptera pest, lepidoptera pest.
Beneficial effect of the present invention:
1, the agricultural chemicals containing potato and Derris ellipta extract of the present invention has synergistic function, obvious to the control efficiency of the insects such as Homoptera, Lepidoptera.
2, potato of the present invention and Derris ellipta are common extracts or extracts respectively rear mixing, and the agricultural chemicals of making can improve crop immune system ability in quick-acting tagging, and can significantly improve its vigor.
3, the present invention be take Chinese herbal medicine as raw material, thereby does not have Pesticide Residue, and insect is difficult to produce resistance; Compare with independent use chemical source agricultural chemicals, environmentally friendly.
When 4, the agricultural chemicals containing potato and Derris ellipta extract of the present invention is used, valid density is low, with low cost.
Embodiment
Agricultural chemicals containing Derris ellipta and potato extract of the present invention, to homoptera pest as aphid, scale insect, trialeurodes vaporariorum etc.; Lepidoptera pest has good preventive effect as cabbage caterpillar, diamond-back moth, prodenia litura etc.
Agricultural chemicals containing Derris ellipta and potato extract of the present invention can be used by common method, sprays on plant leaf surface.As preferred version, while using, the present invention is diluted with water to containing the agricultural chemicals of Derris ellipta and potato extract to take the activity component concentration of crude drug weighing scale be 10～100ppm, it is the agricultural chemicals making after 1g crude drug extracts, when using, be diluted with water to 10kg, its activity component concentration equals 100ppm; Further preferably be diluted to that to take the active ingredient concentration of crude drug weighing scale be 20～50ppm, spray in plant blade face, to occur water membrane on blade face, not lower of liquid is advisable; After being preferable over 5～7 days, carry out secondary dispenser, the preferred continuous administration of a season crop 2～3 times.
In the present invention, alone potato extract insecticidal effect is limited, after composite Derris ellipta, can increase significantly preventive effect.Its active ingredient derives from the agricultural chemicals of plant corpus.That botanical pesticide has in crop pest control is environmentally friendly, toxicity generally lower, be difficult for making the advantages such as disease worm develops immunity to drugs.With edible ethanol, extract after active insecticidal components, residue can be processed as feed or biological organic fertilizer.
Derris ellipta is the root of dicotyledon medicine leguminous plant Derris ellipta.
In order to understand better the present invention, below in conjunction with embodiment, further illustrate the present invention.
Embodiment 1 is containing the preparation of the agricultural chemicals of potato and Derris ellipta extract
Preparation method:
A, extraction: take dry potato haulm and Derris ellipta root, mix, pulverize, cross 80 mesh sieves, add extraction solution, refluxing extraction twice, filters, and merging filtrate is concentrated, makes extract weight equal the weight of crude drug, obtains extract lm-01～lm-05; Wherein, each parameter is in Table 1;
B, preparation: in extract lm-01～lm-06, add the auxiliary agent in table 2, stir, must be containing the agricultural chemicals LM-01～LM-06 of potato and Derris ellipta extract.
The preparation technology parameter of table 1 potato and Derris ellipta extract
Table 2 is containing the formula of the agricultural chemicals of potato and Derris ellipta extract
Embodiment 2 is containing the preparation of the agricultural chemicals of potato and Derris ellipta extract
Preparation method:
A, extraction: take dry potato haulm, pulverize, cross 80 mesh sieves, add extraction solution, refluxing extraction twice, filters, and merging filtrate, obtains extract d1-01～d1-03, and wherein, each parameter is in Table 3;
Take dry Derris ellipta, pulverize, cross 80 mesh sieves, add extraction solution, refluxing extraction twice, filters, and merging filtrate, obtains extract d2-01～d2-03, and wherein, each parameter is in Table 4;
B, preparation: take potato extract, Derris ellipta extract and auxiliary agent, stirring and evenly mixing, obtains the agricultural chemicals LM-07～LM-12 containing potato and Derris ellipta extract, and wherein, each parameter is in Table 5.
Table 3
| Extract numbering | Potato (g) | Solid-liquid ratio | Extract solution | Extraction temperature (℃) | Each extraction time (h) |
| d1-01 | 10 | 1:3 | Water | 95 | 1 |
| d1-02 | 10 | 1:12 | Acetone | 60 | 4 |
| d1-03 | 10 | 1:9 | Absolute ethyl alcohol | 82 | 2 |
Table 4
| Extract numbering | Derris ellipta (g) | Solid-liquid ratio | Extract solution | Extraction temperature (℃) | Each extraction time (h) |
| d2-01 | 10 | 1:3 | Water | 95 | 1 |
| d2-02 | 10 | 1:12 | Acetone | 60 | 4 |
| d2-03 | 10 | 1:9 | Absolute ethyl alcohol | 82 | 2 |
Table 5
The agricultural chemicals that test example 1 contains potato and Derris ellipta extract is for the efficiency test of cucumber aphid
For clearly putting into field efficacy situation containing the agricultural chemicals of potato and Derris ellipta extract, applicant has carried out field control effectiveness test at sky, Pujiang County, Chengdu, Sichuan Province Hua Zhen to this medicament.
1, test material
1.1 for studying thing and object: cucumber aphid
1.2 reagent agent
Product in embodiment: LM-01～LM-12;
Potato extract aqua (numbering D1), Derris ellipta extract aqua (numbering D2);
Chemical reagent contrast: Imidacloprid WDG(Bayer), numbering is designated as D3; Clear water contrast (CK).
Wherein, the preparation method of potato extract aqua is: get the d1-0340g in embodiment 2, add 16g emulsifier 1601, and 3g emulsifier 500,10g ethanol, 5g ethylene glycol, water adds to 100g, makes potato extract aqua.
The preparation method of Derris ellipta extract aqua is: gets the d2-0340g in embodiment 2, adds 16g emulsifier 1601, and 3g emulsifier 500,10g ethanol, 5g ethylene glycol, water adds to 100g, makes Derris ellipta extract aqua.
1.3 test sites: sky, Pujiang County, Chengdu, Sichuan Province Hua Zhen
2, experimental scheme and method
12 medicaments of this test, 2 single dose contrasts, 1 contrast medicament, 1 blank, repeats Gong48Ge community for three times.Minizone and surrounding all leave isolation strip, community area 20m2, and randomized arrangement is respectively processed in community.
By reagent agent thin up, to activity component concentration, be 50ppm, spray application to plant blade face, to occur water membrane on blade face, not lower of liquid is advisable.
Before test, carry out Aphed population statistics the listing mark of fixed blade.Within 5 days after dispenser, investigate and record the aphid number alive on each blade.Calculate insect population decline rate and preventive effect, calculate and adopt following formula:
Ta: the individual amount of survival after treatment region control; Tb: the individual amount of survival before treatment region control
Ca: the individual amount of survival after the control of check plot; Cb: the individual amount of survival before the control of check plot
3, result of the test
Within 5 days after dispenser, investigate and record the borer population alive on each blade, each group meter that repeats to average, calculates insect population decline rate and preventive effect, and it the results are shown in Table 6.
The control efficiency of table 6 product of the present invention to cucumber aphid
| Test medicine | Radix before medicine | 5 days borer populations alive after medicine | Insect population decline rate (%) | Preventive effect (%) |
| LM-01 | 1020 | 119 | 88.33 | 89.06 |
| LM-02 | 950 | 106 | 88.84 | 89.54 |
| LM-03 | 920 | 86 | 90.65 | 91.24 |
| LM-04 | 946 | 108 | 88.58 | 89.30 |
| LM-05 | 922 | 116 | 87.42 | 88.20 |
| LM-06 | 916 | 134 | 85.37 | 86.29 |
| LM-07 | 965 | 222 | 76.99 | 78.43 |
| LM-08 | 900 | 205 | 77.22 | 78.65 |
| LM-09 | 980 | 196 | 80.00 | 81.25 |
| LM-10 | 934 | 230 | 75.37 | 76.91 |
| LM-11 | 956 | 256 | 73.22 | 74.90 |
| LM-12 | 967 | 272 | 71.87 | 73.63 |
| D1 | 920 | 608 | 33.91 | 38.04 |
| D2 | 920 | 520 | 43.48 | 47.01 |
| D3 | 763 | 148 | 80.60 | 81.82 |
| CK | 900 | 960 | -6.67 | —— |
As can be seen from Table 6, product of the present invention has good preventive effect to cucumber aphid, and better, visible than the control efficiency of single potato extract and Derris ellipta extract, between product compositions of the present invention, has synergistic function.And the preventive effect of adopt mixing the product that extracting method makes is apparently higher than blended product after independent extraction, visible mix to extract contribute to improve dissolution rate, improve insecticide efficiency.In addition, during dispenser, have no plant is had to poisoning performance.
In addition by form, can be drawn: the agricultural chemicals that gained of the present invention contains potato and Derris ellipta extract has good control efficiency to cucumber aphid, after medicine 5 days control efficiency all in 85% left and right, have up to 90%, higher than Imidacloprid Insecticide.
Test example 2 the present invention blow the continuous efficiency test being situated between containing the agricultural chemicals of potato and Derris ellipta extract for oranges and tangerines
Product LM-01～LM-12 of the present invention is used for preventing and treating oranges and tangerines and blows continuous Jie.12 medicaments of this test, 2 single doses, 1 blank, repeats Gong45Ge community for three times.Minizone and surrounding all leave isolation strip, community area 20m
2, randomized arrangement is respectively processed in community.
By reagent agent thin up, to activity component concentration, be 50ppm, spray application to plant blade face, to occur water membrane on blade face, not lower of liquid is advisable.
Before test, carry out the work of fixed blade and blow continuous Jie's quantity statistics listing mark.Within 5 days after dispenser, investigate and record the borer population alive on each blade.Calculate insect population decline rate and preventive effect, calculate and adopt following formula:
Ta: the individual amount of survival after treatment region control; Tb: the individual amount of survival before treatment region control
Ca: the individual amount of survival after the control of check plot; Cb: the individual amount of survival before the control of check plot
Within 5 days after dispenser, investigate and record the borer population alive on each blade, each group meter that repeats to average, calculates insect population decline rate and preventive effect, and its result is as shown in table 7.
Table 7 product of the present invention blows the continuous control efficiency being situated between to oranges and tangerines
| Test medicine | Radix before medicine | 5 days borer populations alive after medicine | Insect population decline rate (%) | Preventive effect (%) |
| LM-01 | 820 | 267 | 67.44 | 70.78 |
| LM-02 | 750 | 214 | 71.47 | 74.39 |
| LM-03 | 720 | 160 | 77.78 | 80.06 |
| LM-04 | 764 | 202 | 73.56 | 76.27 |
| LM-05 | 722 | 200 | 72.30 | 75.14 |
| LM-06 | 761 | 218 | 71.35 | 74.29 |
| LM-07 | 756 | 249 | 67.06 | 70.44 |
| LM-08 | 700 | 246 | 64.86 | 68.46 |
| LM-09 | 708 | 164 | 76.84 | 79.21 |
| LM-10 | 743 | 274 | 63.12 | 66.90 |
| LM-11 | 765 | 292 | 61.83 | 65.74 |
| LM-12 | 776 | 306 | 60.57 | 64.61 |
| D1 | 702 | 563 | 19.80 | 28.03 |
| D2 | 702 | 501 | 28.63 | 35.95 |
| CK | 700 | 780 | -11.43 | —— |
As can be seen from Table 7, product of the present invention blows continuous Jie to oranges and tangerines and has good preventive effect, and better, visible than the control efficiency of single potato extract and Derris ellipta extract, between product compositions of the present invention, has synergistic function.And the preventive effect of adopt mixing the product that extracting method makes is apparently higher than blended product after independent extraction, visible mix to extract contribute to improve dissolution rate, improve insecticide efficiency.In addition, during dispenser, have no plant is had to poisoning performance.
Test example 3 the present invention are used for the efficiency test of a variety of Chinese cabbage diamond-back moth containing the agricultural chemicals of potato and Derris ellipta extract
Product LM-01～LM-12 of the present invention is used for preventing and treating a variety of Chinese cabbage diamond-back moth.12 medicaments of this test, 2 single doses, 1 blank, repeats Gong45Ge community for three times.Minizone and surrounding all leave isolation strip, community area 10m
2, randomized arrangement is respectively processed in community.
By reagent agent thin up, to activity component concentration, be 50ppm, spray application to plant blade face, to occur water membrane on blade face, not lower of liquid is advisable.
Before test, carry out diamond-back moth quantity statistics alive the listing mark of fixed blade.Within 5 days after dispenser, investigate and record the borer population alive on each blade.Calculate insect population decline rate and preventive effect, calculate and adopt following formula:
Ta: the individual amount of survival after treatment region control; Tb: the individual amount of survival before treatment region control
Ca: the individual amount of survival after the control of check plot; Cb: the individual amount of survival before the control of check plot
Within 5 days after dispenser, investigate and record the borer population alive on each blade, each group meter that repeats to average, calculates insect population decline rate and preventive effect, and its result is as shown in table 8.
The control efficiency of table 8 product of the present invention to a variety of Chinese cabbage diamond-back moth
| Test medicine | Radix before medicine | 5 days borer populations alive after medicine | Insect population decline rate (%) | Preventive effect (%) |
| LM-01 | 720 | 108 | 85.00 | 86.76 |
| LM-02 | 605 | 87 | 85.62 | 87.31 |
| LM-03 | 702 | 67 | 90.46 | 91.58 |
| LM-04 | 746 | 116 | 84.45 | 86.28 |
| LM-05 | 687 | 123 | 82.10 | 84.20 |
| LM-06 | 616 | 123 | 80.03 | 82.38 |
| LM-07 | 665 | 155 | 76.69 | 79.43 |
| LM-08 | 650 | 151 | 76.77 | 79.50 |
| LM-09 | 680 | 129 | 81.03 | 83.26 |
| LM-10 | 634 | 159 | 74.92 | 77.87 |
| LM-11 | 656 | 187 | 71.49 | 74.85 |
| LM-12 | 667 | 199 | 70.16 | 73.67 |
| D1 | 620 | 443 | 28.55 | 36.95 |
| D2 | 620 | 379 | 38.87 | 46.06 |
| CK | 600 | 680 | -13.33 | —— |
As can be seen from Table 8, product of the present invention has good preventive effect to a variety of Chinese cabbage diamond-back moth, and better, visible than the control efficiency of single potato extract and Derris ellipta extract, between product compositions of the present invention, has synergistic function.And the preventive effect of adopt mixing the product that extracting method makes is apparently higher than blended product after independent extraction, visible mix to extract contribute to improve dissolution rate, improve insecticide efficiency.In addition, during dispenser, have no plant is had to poisoning performance.
Test example 4 the present invention are containing the efficiency test of the agricultural chemicals cotton cotton bollworm of potato and Derris ellipta extract
Product LM-01～LM-12 of the present invention is used for preventing and treating cotton cotton bollworm.12 medicaments of this test, 2 single doses, 1 blank, repeats Gong45Ge community for three times.Minizone and surrounding all leave isolation strip, community area 10m
2, randomized arrangement is respectively processed in community.
By reagent agent thin up, to activity component concentration, be 50ppm, spray application to plant blade face, to occur water membrane on blade face, not lower of liquid is advisable.
Before test, carry out cotton bollworm quantity statistics alive the listing mark of fixed blade.Within 5 days after dispenser, investigate and record the borer population alive on each blade.Calculate insect population decline rate and preventive effect, calculate and adopt following formula:
Ta: the individual amount of survival after treatment region control; Tb: the individual amount of survival before treatment region control
Ca: the individual amount of survival after the control of check plot; Cb: the individual amount of survival before the control of check plot
Within 5 days after dispenser, investigate and record the borer population alive on each blade, each group meter that repeats to average, calculates insect population decline rate and preventive effect, and its result is as shown in table 9.
The control efficiency of table 10 product of the present invention to cotton cotton bollworm
| Test medicine | Radix before medicine | 5 days borer populations alive after medicine | Insect population decline rate (%) | Preventive effect (%) |
| LM-01 | 620 | 102 | 83.55 | 85.82 |
| LM-02 | 505 | 92 | 81.78 | 84.29 |
| LM-03 | 502 | 75 | 85.06 | 87.12 |
| LM-04 | 546 | 100 | 81.68 | 84.21 |
| LM-05 | 587 | 114 | 80.58 | 83.26 |
| LM-06 | 516 | 112 | 78.29 | 81.29 |
| LM-07 | 565 | 135 | 76.11 | 79.40 |
| LM-08 | 550 | 137 | 75.09 | 78.53 |
| LM-09 | 580 | 120 | 79.31 | 82.16 |
| LM-10 | 534 | 143 | 73.22 | 76.91 |
| LM-11 | 556 | 156 | 71.94 | 75.81 |
| LM-12 | 567 | 167 | 70.55 | 74.61 |
| D1 | 520 | 404 | 22.31 | 33.02 |
| D2 | 520 | 350 | 32.69 | 41.98 |
| CK | 500 | 580 | -16.00 | —— |
As can be seen from Table 9, product of the present invention has good preventive effect to cotton cotton bollworm, and better, visible than the control efficiency of single potato extract and Derris ellipta extract, between product compositions of the present invention, has synergistic function.And the preventive effect of adopt mixing the product that extracting method makes is apparently higher than blended product after independent extraction, visible mix to extract contribute to improve dissolution rate, improve insecticide efficiency.In addition, during dispenser, have no plant is had to poisoning performance.
To sum up show, product of the present invention to Homoptera, lepidopterous insect pest by good preventive and therapeutic effect.Simultaneously, experiment also finds, gained agricultural chemicals of the present invention to the different insect pests of Different Crop to put efficiency as follows: wild cabbage diamond-back moth 80-90%, a variety of Chinese cabbage diamond-back moth 80-90%, wild cabbage prodenia litura 75-85%, cabbage pieris 85% left and right, cucumber beet snout moth's larva 80-90%, cotton cotton bollworm 80-87%, oranges and tangerines cottonycushion scale 70-80%, eggplant trialeurodes vaporariorum 70-80%, aphid 80-90%(oranges and tangerines, pumpkin, wild cabbage, cucumber, eggplant).
Claims (10)
1. containing the agricultural chemicals of potato and Derris ellipta extract, it is characterized in that, its active component is formed by the crude drug extraction of following weight portion: 1 part of potato, 1～8 part of Derris ellipta.
2. the agricultural chemicals containing potato and Derris ellipta extract according to claim 1, is characterized in that, its active component is formed by the crude drug extraction of following weight portion: 1 part of potato, 1～5 part of Derris ellipta; Be preferably 1 part of potato, 1～3 part of Derris ellipta; More preferably potato is 1 part, 1 part of Derris ellipta.
3. the agricultural chemicals containing potato and Derris ellipta extract according to claim 1, is characterized in that: after its active component is mixed by potato and Derris ellipta, common extraction forms; Or by potato, extract the potato extract, the Derris ellipta that obtain and extract the Derris ellipta extract obtaining and mix.
4. according to the agricultural chemicals containing potato and Derris ellipta extract described in claim 1～3 any one, it is characterized in that: the described agricultural chemicals containing potato and Derris ellipta extract is microemulsion, aqua or soluble concentrate.
5. according to the agricultural chemicals containing potato and Derris ellipta extract described in claim 1～4 any one, it is characterized in that: in the described agricultural chemicals containing potato and Derris ellipta extract, also comprise auxiliary agent, described auxiliary agent is at least one in emulsifier, antifreeze, solvent, defoamer, dispersant, wetting agent, stabilizing agent.
6. the agricultural chemicals containing potato and Derris ellipta extract according to claim 4, it is characterized in that: when the agricultural chemicals that contains potato and Derris ellipta extract is made aqua, component by following weight portion forms: potato and Derris ellipta extract are with 40 parts of crude drug weighing scales, 19 parts of emulsifier, 10 parts of solvents, 5 parts of antifreezes, water adds to 100 parts; Wherein, potato and Derris ellipta extract are that after potato and Derris ellipta mix, common extraction forms; Or by potato, extract the potato extract, the Derris ellipta that obtain and extract the Derris ellipta extract obtaining and mix; Wherein, the concentration of potato and Derris ellipta extract is preferably potato and the Derris ellipta extract after extracting to be concentrated into weight identical with crude drug weight.
7. the method for the agricultural chemicals containing potato and Derris ellipta extract of preparation described in claim 1～6, is characterized in that being comprised of following steps:
A, extraction: take potato granular and Derris ellipta particle, mix, by solid-liquid ratio, 1:3～12g/ml adds solvent, in 60～95 ℃ of refluxing extraction, filter, and obtains extract, and wherein, described solvent is organic solvent or water;
B, preparation: extract is made to microemulsion, soluble concentrate or aqua.
8. preparation according to claim 7, containing the method for the agricultural chemicals of potato and Derris ellipta extract, is characterized in that: in described a step, potato granular and Derris ellipta particle are crossed 60～100 mesh sieves preferred mistake 80 mesh sieves; Solid-liquid ratio is 1:4～10g/ml, is preferably 1:9g/ml; Organic solvent is methyl alcohol, ethanol, ethyl acetate, acetone, chloroform, is preferably absolute ethyl alcohol; Reflux temperature is 75～85 ℃, is preferably 82 ℃; Reflow's cycle is twice, and merging filtrate, obtains extract.
9. the application of the agricultural chemicals containing potato and Derris ellipta extract described in claim 1～6 in control crop pest.
10. the application of the agricultural chemicals containing potato and Derris ellipta extract according to claim 9 in control crop pest, is characterized in that: described insect pest is homoptera pest, lepidoptera pest; During application, be diluted with water to that to take the activity component concentration of crude drug weighing scale be 10～100ppm, preferably 20～50ppm.
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