CN117546848A - Insecticidal material for spodoptera littoralis larvae and preparation method and application method thereof - Google Patents
Insecticidal material for spodoptera littoralis larvae and preparation method and application method thereof Download PDFInfo
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- CN117546848A CN117546848A CN202311545438.3A CN202311545438A CN117546848A CN 117546848 A CN117546848 A CN 117546848A CN 202311545438 A CN202311545438 A CN 202311545438A CN 117546848 A CN117546848 A CN 117546848A
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- insecticidal material
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- 230000000749 insecticidal effect Effects 0.000 title claims abstract description 87
- 239000000463 material Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 19
- 241000256250 Spodoptera littoralis Species 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 241000256251 Spodoptera frugiperda Species 0.000 claims abstract description 37
- 239000008157 edible vegetable oil Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 235000010489 acacia gum Nutrition 0.000 claims abstract description 19
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 19
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 19
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 19
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 14
- 239000000194 fatty acid Substances 0.000 claims abstract description 14
- 229930195729 fatty acid Natural products 0.000 claims abstract description 14
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 14
- 235000010643 Leucaena leucocephala Nutrition 0.000 claims abstract description 10
- 239000002562 thickening agent Substances 0.000 claims abstract description 10
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 8
- 239000011734 sodium Substances 0.000 claims abstract description 8
- -1 sodium fatty alcohol Chemical class 0.000 claims abstract description 8
- 229920000084 Gum arabic Polymers 0.000 claims abstract description 7
- 239000000205 acacia gum Substances 0.000 claims abstract description 7
- 239000003240 coconut oil Substances 0.000 claims abstract description 7
- 235000019864 coconut oil Nutrition 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims description 30
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical group [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 29
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 24
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 13
- 239000004202 carbamide Substances 0.000 claims description 13
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 13
- 239000001785 acacia senegal l. willd gum Substances 0.000 claims description 12
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 7
- 244000060011 Cocos nucifera Species 0.000 claims description 7
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 3
- 244000215068 Acacia senegal Species 0.000 claims 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 240000007472 Leucaena leucocephala Species 0.000 claims 1
- 239000004094 surface-active agent Substances 0.000 abstract description 31
- 241000238631 Hexapoda Species 0.000 abstract description 19
- 241000220479 Acacia Species 0.000 abstract description 9
- 239000011148 porous material Substances 0.000 abstract description 5
- 210000002615 epidermis Anatomy 0.000 abstract 1
- 241000607479 Yersinia pestis Species 0.000 description 28
- 239000000243 solution Substances 0.000 description 26
- 240000008042 Zea mays Species 0.000 description 19
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 19
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 18
- 235000005822 corn Nutrition 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 14
- 235000011181 potassium carbonates Nutrition 0.000 description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 11
- 229910052938 sodium sulfate Inorganic materials 0.000 description 11
- 235000011152 sodium sulphate Nutrition 0.000 description 11
- 150000002191 fatty alcohols Chemical class 0.000 description 10
- 230000006378 damage Effects 0.000 description 8
- 241000196324 Embryophyta Species 0.000 description 7
- 239000003337 fertilizer Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 239000000575 pesticide Substances 0.000 description 5
- 230000029058 respiratory gaseous exchange Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008719 thickening Effects 0.000 description 4
- 238000012271 agricultural production Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229940072033 potash Drugs 0.000 description 3
- 235000015320 potassium carbonate Nutrition 0.000 description 3
- 230000003938 response to stress Effects 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000035558 fertility Effects 0.000 description 2
- 239000000618 nitrogen fertilizer Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 208000003643 Callosities Diseases 0.000 description 1
- 244000048199 Hibiscus mutabilis Species 0.000 description 1
- 235000003973 Hibiscus mutabilis Nutrition 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 241000985245 Spodoptera litura Species 0.000 description 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000004495 emulsifiable concentrate Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001617 migratory effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P7/00—Arthropodicides
- A01P7/04—Insecticides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Dentistry (AREA)
- Toxicology (AREA)
- Insects & Arthropods (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses an insecticidal material for spodoptera littoralis larvae, which comprises the components of sodium fatty alcohol polyoxyethylene ether sulfate, coconut oil fatty acid diethanolamide, acacia, edible oil, an emulsifier, a thickener and water. The invention also discloses a preparation method and a using method of the insecticidal material. The invention is used in the insecticidal material of spodoptera frugiperda larva, the emulsifier combines with part of edible oil to generate a surfactant, the surfactant has both an oil-friendly end and a hydrophilic end, the oil-friendly end combines with the rest of edible oil, so that the adhesion between the insecticidal material and the wax layer on the surface of the insect body is enhanced, the surfactant is dispersed on the surface of the spodoptera frugiperda larva with waxy epidermis, the hydrophilic end of the surfactant can bring acacia gum to the surface of the spodoptera frugiperda, and the viscosity of the surfactant is utilized to block pores on the surface of the spodoptera frugiperda larva so as to cause the larva to be anoxic and choked.
Description
Technical Field
The invention relates to the field of pesticides, in particular to a pesticide material for spodoptera litura larvae, and a preparation method and a use method thereof.
Background
Spodoptera frugiperda diffuses more rapidly in the southern corn area. Spodoptera frugiperda is a major migratory pest on corn, corn seedling damage can be reduced by 10% -25% in general, and serious damage to fields can cause seed destruction and harvest failure. Compared with common insect pests, the spodoptera frugiperda has more serious harm, heavier degree and larger threat: firstly, the temperature suitability is wider, and the adaptive temperature range of spodoptera frugiperda is 11-30 ℃; secondly, the damage degree is heavier, spodoptera frugiperda can cause damage to corns in various stages such as seedling stage, spike stage and mature stage, and eating of the spodoptera frugiperda, leaves, stems and ears can be realized; thirdly, the difficulty of prevention and control is higher, the spodoptera frugiperda has stronger resistance, the spodoptera frugiperda has resistance to various chemical pesticides, and the advanced larva can also be drilled into the corn, so that the prevention and control effect is more compromised.
On the other hand, the safety of agricultural products has been a major concern for agricultural workers. Therefore, it is very necessary to research an insecticidal material which has good control effect on spodoptera frugiperda and can ensure the safety of crop products.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing an insecticidal material for spodoptera frugiperda larvae, and a preparation method and a use method thereof.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the insecticidal material for spodoptera littoralis larvae comprises sodium fatty alcohol polyoxyethylene ether sulfate, coconut oil fatty acid diethanolamide, edible oil, an emulsifying agent, a thickening agent, a film forming agent and water.
In the insecticidal material, preferably, the emulsifier is one or more of potassium hydroxide and sulfonic acid, and the mass addition amount of the emulsifier is not more than 5 per mill.
In the insecticidal material, preferably, the thickening agent is potassium carbonate, and the mass addition amount of the thickening agent is not more than 1 per mill.
In the insecticidal material, preferably, the film forming agent is Arabic gum, and the mass addition amount of the film forming agent is 0.1-5 per mill.
In the insecticidal material, the mass addition amount of the edible oil is preferably not more than 5 per mill.
In the insecticidal material, preferably, the mass addition amount of the fatty alcohol-polyoxyethylene ether sodium sulfate is not more than 5%.
In the insecticidal material, preferably, the mass addition amount of the coconut oil fatty acid diethanoyl is not more than 3%.
The insecticidal material preferably further comprises urea with the mass content of not more than 5%.
Although the Arabic gum has thickening property and adhesiveness, the Arabic gum is a hydrophilic material, and the surfaces of the larvae of the greedy night-eating moth are provided with water-repellent wax layers, so that Arabic gum can be prevented from degumming and entering respiratory pores to form blockage, and the Arabic gum alone cannot adhere to the greedy night-eating moth, so that the purpose of blocking the pores is realized. In order to enable the acacia gum to adhere to the body surface of the greedy night's larva and block the air holes of the greedy night's larva, the amphiphilicity of the surfactant is used for solving the problem, the oil is added at the oil-philic end of the surfactant to improve the affinity of the oil to the waxy layer on the larva body surface, the hydrophilic end of the surfactant can form a connection with the acacia gum, and the acacia gum is adhered to the body surface of the greedy night's larva by taking the surfactant as an intermediary. Although the acacia gum can block pores by adding a conventional surfactant, the water retention time is not long, and the insecticidal effect is poor. Therefore, the invention selects the potassium carbonate as the raw material of the thickener, on one hand, the thickening stability can be improved, and after the invention is combined with the edible oil, the water retention time of the insecticidal material can be increased, and the insecticidal effect can be improved; in another aspect, the potassium carbonate may also provide fertilizer for crops.
The mechanism of the invention is as follows: the acacia has good emulsifying property, thickening property and film forming property after drying, the acacia is utilized to increase the thick density of the solution to form stable emulsion, the film can be formed after drying, after adding a proper amount of emulsifying agent and fatty alcohol polyoxyethylene ether sodium sulfate, a small amount of oil is added to enable the oil-friendly end of the emulsifying agent to be combined with the oil so as to enable the oil-friendly end to be quickly combined with a waxy material of the air holes of the insect body surface, the other end of the emulsifying agent is combined with the acacia to form a viscous material which is easy to adhere to the insect body surface, and the emulsifying agent is sprayed on the insect body surface so as to quickly block the air holes of the insect body surface, prevent the insect from breathing and realize the insecticidal effect. The thickening formula consisting of crop fertilizers, such as potassium hydroxide, sulfonic acid, potassium chloride or potassium bicarbonate, is added in an auxiliary manner, so that fertility can be provided for plants, and agricultural production efficiency is greatly improved.
The invention also provides a preparation method of the insecticidal material, which comprises the following steps:
(1) Adding an emulsifier into edible oil accounting for 80% of the total amount of the edible oil, and stirring to compound to generate a surfactant;
(2) Adding sodium fatty alcohol polyoxyethylene ether sulfate, coconut fatty acid diethanolamide and a thickening agent into the solution obtained in the step (1), uniformly stirring, and combining to form a viscous surfactant;
(3) Adding the rest 20% of edible oil into the emulsified viscous liquid obtained in the step (2) and uniformly stirring;
(4) And (3) dissolving urea and Arabic gum in water, then adding the solution obtained in the step (3), and uniformly stirring to obtain the insecticidal material for spodoptera littoralis larvae.
As a general invention, the invention also provides a use method of the insecticidal material, the insecticidal material is filled into a sprayer to spray spodoptera frugiperda larvae, wherein the spodoptera frugiperda larvae are sprayed once before the 3-instar, and the spodoptera frugiperda larvae after the 3-instar are sprayed once again after three minutes after the first spraying.
The above application method is preferably selected to spray in cloudy days, small rainy days or evening.
Compared with the prior art, the invention has the advantages that:
(1) In the insecticidal material for spodoptera frugiperda larvae, the emulsifier is combined with part of edible oil to generate a surfactant, the surfactant has an oil-friendly end and a hydrophilic end, the oil-friendly end is combined with the rest of edible oil, so that the adhesion between the insecticidal material and a wax layer on the surface of a pest body is enhanced, the surfactant is dispersed on the surface of the spodoptera frugiperda larvae with waxy surfaces, the hydrophilic end of the surfactant can bring Arabic gum to the surface of the spodoptera frugiperda, and the viscosity of the surfactant is utilized to block pores on the surface of the spodoptera frugiperda larvae, so that the larvae are hypoxia and choked. The edible oil can prevent the water of the surfactant from evaporating, so that the air hole blocking time is prolonged, and the insecticidal effect is improved; the acacia has film forming property, and forms a gas-proof film along with the loss of water, and when the water of the surfactant evaporates, the acacia forms a sealing film which can prevent the respiration of larvae for a longer time so as to improve the effect of killing the greedy night. The surfactant alone cannot ensure adhesiveness and water retention, and has no film forming property; the edible oil is singly used, so that the emulsifiable concentrate cannot be formed and cannot be rapidly dispersed and covered on the surface of the insect; the unit uses the acacia gum, can not be combined with a wax layer on the surface of the pest body and is adhered to the surface of the pest body; the insecticidal material formed by combining the raw materials can be quickly adhered to the surface of a pest to form a lasting plug, so that the purpose of preventing the pest from breathing until the pest dies is realized.
(2) The insecticidal material disclosed by the invention has the advantages that the combination of the fatty alcohol polyoxyethylene ether sodium sulfate, the coconut fatty acid diethanolamide and the potassium carbonate thickener can form a surfactant with stronger viscosity, the oil-in end of the surfactant with stronger viscosity is combined with edible oil to form an adhesive material with good ductility, and the adhesive material can be better adhered and distributed on a waxy layer on the body surface of a pest to form an adhesive layer; the hydrophilic end of the viscous surfactant is combined with the acacia, so that not only can the adhesiveness be increased, but also the gum consistency can be increased, the blocking of the surface of the pest body is facilitated, and the effect of killing the pest is improved; and the potassium carbonate is a potash fertilizer, so that the yield of crops can be improved; in addition, the potassium carbonate can also prevent diseases of crops caused by the increase of humidity of the sprayed insecticidal material, plays a role in preventing diseases, improves the agricultural production efficiency and saves the agricultural production cost.
(3) The insecticidal material for spodoptera littoralis larvae selects the materials capable of providing the nitrogenous fertilizer and the potash fertilizer, so that the insecticidal material can also provide the nitrogenous fertilizer and the potash fertilizer, has the effect of fertilizing while killing insects, and improves the working efficiency.
(4) The urea is added into the insecticidal material, so that the water retention and water absorption of the material can be improved besides the fertility, the insecticidal material can be in a water-holding wet expansion state for a longer time, the blocking effect of the insecticidal material on the air holes of the night's insect can be better in the water-holding wet expansion state, and the insecticidal effect can be improved.
(5) The insecticidal material disclosed by the invention has no toxicity, does not harm insecticidal operators, does not pollute agricultural products, and improves the quality and safety of the agricultural products.
(6) The pesticide provided by the invention is a material capable of preventing pests from breathing by using rain or sprinkling water, can fully play the hydrophilic function of the pesticide during rain or sprinkling water, drains the water sprinkled on the surface of the pests during rain or sprinkling water to the air hole position of the Fangshi night, blocks the air hole to prevent the pests from breathing normally, realizes the insecticidal effect, and reduces the insecticidal cost and the labor capacity.
Drawings
FIG. 1 is a flow chart showing the use of the insecticidal material for spodoptera frugiperda larvae of the present invention in killing spodoptera frugiperda.
Detailed Description
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown, for the purpose of illustrating the invention, but the scope of the invention is not limited to the specific embodiments shown.
Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present invention.
The test protocols for each of the following examples and comparative examples are as follows:
experimental time: 2021, 7 and 25.
Experiment site: new maize variety test field of the cotton rose district Ma Poling of the long sand city of Hunan province.
Test crop: corn.
Test crop physiology period: and (5) a male silk sucking period.
Test protocol: the night-eating moth was found to harm the plants and the night-eating moth larvae were found, treatments and comparisons were set, and 4 replicates of each treatment and comparison were set.
Detecting items: the stress reaction time of the pests after spraying, the spraying times for killing the pests, and the growth performance of the crops after spraying.
The analysis method comprises the following steps: and comparing detection results.
The implementation effect is as follows: and (3) in-situ detection is carried out during spraying, the time of stress reaction generated by pests is observed, the pests die after spraying for how many times, and the growth performance of crops after spraying the material is detected on the seventh day after spraying.
Example 1:
the invention relates to an insecticidal material for spodoptera littoralis larvae, which comprises the following components of sodium fatty alcohol polyoxyethylene ether sulfate, coconut oil fatty acid diethanolamide, acacia, edible oil, an emulsifying agent, potassium carbonate, urea and water, wherein the emulsifying agent is potassium hydroxide and sulfonic acid, the mass addition amount of the emulsifying agent is 0.4 per mill, the mass addition amount of the potassium carbonate is 0.02 per mill, the mass addition amount of the acacia is 1.3 per mill, the mass addition amount of the edible oil is 5 per mill, the mass addition amount of the sodium fatty alcohol polyoxyethylene ether sulfate is 1 per mill, the mass addition amount of the coconut oil fatty acid diethanolamide is 0.4 per mill, and the mass content of the urea is 0.2 per mill.
The application method of the insecticidal material for spodoptera frugiperda larvae in killing corn spodoptera frugiperda in the embodiment is shown in the figure 1, and the specific process is as follows:
(1) Adding 0.8g of potassium hydroxide and 5g of sulfonic acid into 60g of edible oil, stirring and combining to form a surfactant;
(2) Stirring 15g of fatty alcohol polyoxyethylene ether sodium sulfate in the solution obtained in the step (1) to dissolve the fatty alcohol polyoxyethylene ether sodium sulfate;
(3) Adding 6g of coconut fatty acid diethanolamide and 0.3g of potassium carbonate into the solution obtained in the step (2), and uniformly stirring to prepare a viscous surfactant;
(4) 15g of edible oil is added into the viscous surfactant and stirred fully, and then 14Kg of water is added and stirred evenly;
(5) Adding 20g of Arabic gum and 3g of urea into 1000g of water for dissolution and dilution, then adding into the solution obtained in the step (4), and uniformly stirring to prepare an insecticidal material solution;
(6) Spraying the insecticidal material solution in the evening 15 days after first seeing the corn greedy night, and spraying the whole corn seedlings to ensure that the whole bodies of the larvae on the plants are fully stuck with the insecticidal solution. The next day the insecticidal effect is detected, if living pests are found, the accurate spraying of the pests is continued. The results are shown in Table 1.
Table 1: effect of example 1
| Detecting items | Detection result |
| Pest stress response time after spraying | Immediately |
| The spraying times for killing pests are completed | 1 |
| Crop growth performance after spraying | Vigorous growth |
Comparative example 1:
the insecticidal material for spodoptera frugiperda larvae of this comparative example is different from example 1 in that it does not contain edible oil and emulsifier.
The application method of the insecticidal material for spodoptera frugiperda larvae in the comparative example for killing corn spodoptera frugiperda comprises the following specific processes:
(1) Adding 15g of fatty alcohol polyoxyethylene ether sodium sulfate into 100g of water, and stirring to dissolve the fatty alcohol polyoxyethylene ether sodium sulfate;
(2) Adding 6g of coconut fatty acid diethanolamide and 0.3g of potassium carbonate into the solution obtained in the step (1), and uniformly stirring to prepare a viscous surfactant;
(3) Adding 14Kg of water after stirring fully, and stirring uniformly;
(5) Adding 20g of Arabic gum and 3g of urea into 1000g of water for dissolution and dilution, then adding into the solution obtained in the step (3), and uniformly stirring to prepare an insecticidal material solution;
(6) Spraying the insecticidal material solution in the evening 15 days after first seeing the corn greedy night, and spraying the whole corn seedlings to ensure that the whole bodies of the larvae on the plants are fully stuck with the insecticidal solution. The next day the insecticidal effect is detected, if living pests are found, the accurate spraying of the pests is continued. The detection results are shown in Table 2.
Table 2: effect of comparative example 1
| Detecting items | Detection result |
| Pest stress response time after spraying | After 30 seconds a small part has reaction |
| The spraying times for killing pests are completed | - |
| Crop growth performance after spraying | Slightly promote growth reaction |
The insecticidal material of comparative example 1 was hardly attached to the body of the insect and to the plant leaves, only a very small part was adhered to the leaves and the body of the insect, most of it was dropped to the ground, and the insecticidal effect could not be achieved by the continuous 4-day spraying.
Comparative example 2:
the insecticidal material for spodoptera frugiperda larvae of this comparative example is different from example 1 in that it does not contain potassium carbonate.
The application method of the insecticidal material for spodoptera frugiperda larvae in the comparative example for killing corn spodoptera frugiperda comprises the following specific processes:
(1) Adding 0.8g of potassium hydroxide and 5g of sulfonic acid into 60g of edible oil, stirring and synthesizing a surfactant;
(2) Adding 15g of fatty alcohol polyoxyethylene ether sodium sulfate into the solution obtained in the step (1) and stirring to dissolve the fatty alcohol polyoxyethylene ether sodium sulfate;
(3) Adding 6g of coconut oil fatty acid diethanolamide into the solution obtained in the step (2), and uniformly stirring to prepare a viscous surfactant;
(4) Adding 15g of edible oil into the emulsion thick liquid, stirring thoroughly, adding 14Kg of water, and stirring uniformly;
(5) Adding 20g of Arabic gum and 3g of urea into 1000g of water for dissolution and dilution, then adding into the solution obtained in the step (4), and uniformly stirring to prepare an insecticidal material solution;
(6) Spraying the insecticidal material solution in the evening 15 days after first seeing the corn greedy night, and spraying the whole corn seedlings to ensure that the whole bodies of the larvae on the plants are fully stuck with the insecticidal solution. The results are shown in Table 3.
Table 3: effect of comparative example 2
| Detecting items | Detection effect |
| Pest stress response time after spraying | Immediately |
| The spraying times for killing pests are completed | 3 |
| Crop growth performance after spraying | Slightly promote growth reaction |
The insecticidal material of comparative example 2 has low viscosity, and after the insecticidal material is sprayed on the surface of the insect body to adhere, the insect will react, but the death rate is low, and when the insecticidal material on the surface of the insect is not dried, the insecticidal material is continuously sprayed for more than 3 times, so that the air holes on the surface of the insect are always under the wrapping of water for about 10 minutes, and the insect can be killed by the surface tension blockage of the water.
Comparative example 3:
the insecticidal material for spodoptera frugiperda larvae of this comparative example is different from example 1 in that it does not contain urea.
The application method of the insecticidal material for spodoptera frugiperda larvae in killing corn spodoptera frugiperda in the embodiment comprises the following specific processes:
(1) Adding 0.8g of potassium hydroxide and 5g of sulfonic acid into 60g of edible oil, stirring and synthesizing a surfactant;
(2) Adding 15g of fatty alcohol polyoxyethylene ether sodium sulfate into the solution obtained in the step (1) and stirring to dissolve the fatty alcohol polyoxyethylene ether sodium sulfate;
(3) Adding 6g of coconut fatty acid diethanolamide and 0.3g of potassium carbonate into the solution obtained in the step (2), and uniformly stirring to prepare a viscous surfactant;
(4) Adding 15g of edible oil into the emulsion thick liquid, stirring thoroughly, adding 14Kg of water, and stirring uniformly;
(5) Adding 20g of Arabic gum into 1000g of water for dissolution and dilution, then adding into the solution obtained in the step (4), and uniformly stirring to prepare an insecticidal material solution;
(6) Spraying the insecticidal material solution in the evening 15 days after first seeing the corn greedy night, and spraying the whole corn seedlings to ensure that the whole bodies of the larvae on the plants are fully stuck with the insecticidal solution. The results are shown in Table 4.
Table 4: effect of comparative example 3
The insecticidal effect of the insecticidal material in comparative example 3 was slightly inferior to that of example 1, probably because the insecticidal material was dried faster, and sprayed in a dry season or in a sunny day when the air temperature was high, and because the insecticidal material was dried quickly without the water absorbing and retaining effects of urea, the water layer on the surface of the insect was quickly disappeared, the effect of blocking the air holes by the insecticidal material was reduced, and the mortality rate of the insect was affected. In addition, the fertilizer efficiency can be influenced when urea is not added, the fertilizer effect is not obvious after the insecticidal material is sprayed, and the aim of secondary efficiency of primary work can not be fulfilled.
Claims (10)
1. The insecticidal material for spodoptera littoralis larvae is characterized by comprising the components of sodium fatty alcohol polyoxyethylene ether sulfate, coconut oil fatty acid diethanolamide, acacia, edible oil, an emulsifier, a thickener and water.
2. The insecticidal material according to claim 1, wherein the emulsifier is one or more of potassium hydroxide and sulfonic acid, and the mass addition amount of the emulsifier is not more than 5 per mill.
3. The insecticidal material of claim 1, wherein said thickener is potassium carbonate and is added in an amount of not more than 1% by mass.
4. The insecticidal material according to claim 1, wherein the gum arabic is added in an amount of 0.1 to 5%.
5. The insecticidal material of claim 1, wherein said edible oil is added in an amount of no more than 5% by mass.
6. The insecticidal material according to claim 1 wherein said sodium fatty alcohol polyoxyethylene ether sulfate is added in an amount of not more than 5% by mass and said coconut fatty acid diethanoyl is added in an amount of not more than 3% by mass.
7. The insecticidal material of claim 1, further comprising urea in an amount of no more than 5% by mass.
8. A method of preparing an insecticidal material according to any one of claims 1 to 7, comprising the steps of:
(1) Adding an emulsifier into edible oil accounting for 80% of the total amount of the edible oil, and stirring;
(2) Adding sodium fatty alcohol-polyoxyethylene ether sulfate, coconut fatty acid diethanolamide and a thickening agent into the solution obtained in the step (1), and uniformly stirring;
(3) Adding the rest 20% edible oil into the solution obtained in the step (2) and uniformly stirring;
(4) And (3) dissolving urea and Arabic gum in water, then adding the solution obtained in the step (3), and uniformly stirring to obtain the insecticidal material for spodoptera littoralis larvae.
9. A method of using the insecticidal material of any one of claims 1 to 7 or the insecticidal material produced by the method of claim 8, wherein the insecticidal material is sprayed on spodoptera frugiperda larvae in a spray container, wherein the spodoptera frugiperda larvae are sprayed once before the 3 rd instar, and the spodoptera frugiperda larvae after the 3 instar are sprayed once again three minutes after the first spraying.
10. The method of claim 9, wherein the spraying is selected on cloudy days, rainy days, or evening.
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| CN202311545438.3A CN117546848A (en) | 2023-11-17 | 2023-11-17 | Insecticidal material for spodoptera littoralis larvae and preparation method and application method thereof |
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| CN202311545438.3A CN117546848A (en) | 2023-11-17 | 2023-11-17 | Insecticidal material for spodoptera littoralis larvae and preparation method and application method thereof |
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