A kind of Pesticidal combination that contains MTI-446 and desinsection list
Technical field
The invention belongs to technical field of pesticide, relate to a kind of Pesticidal combination that contains MTI-446 and desinsection list.
Background technology
MTI-446, English common name (dinotefuran), chemical name 1-methyl-2-nitro-3-(tetrahydrochysene-3-furfuryl) guanidine.The chemical constitution of itself and existing nicotinic insecticide is far from each other, and chloro-pyridine base, chloro thiazolyl before its tetrahydrofuran base has replaced do not contain the halogen family element.Simultaneously, also different at aspect of performance with nicotine.So people are referred to as " furans nicotine " at present.This medicament insecticidal spectrum is wide, has remarkable interior suction osmosis, and has promptly shown very high insecticidal activity at very low dosage.This medicament is fool proof to mammal, birds and aquatile, and crop is not had poisoning, can be used for numerous crops such as paddy rice, fruit tree, vegetables.
The desinsection list, English common name monosultap, chemical name are 2-N, N dimethylamine base-1-sodium thiosulfate base-3-propane thiosulfate, molecular formula is C
5H
14O
7S
4Na, structural formula:
The desinsection list is a kind of analog of nereistoxin of synthetic, enters and is converted into clam worm element or dihydro nereistoxin in the insect bodies rapidly.This medicine is the acetylcholine competitive inhibitor, have stronger tag, stomach toxicity and interior suction conduction, the larva of lepidoptera pest is had the better prevention effect, this medicine is mainly used in the insect on the crops such as control sugarcane, paddy rice.
Yet, in the real process of agricultural production, the problem that pest control is easy to generate most is the generation of pest resistance to insecticide, the shortcoming of desinsection list is that dosage is big, quick-acting is relatively poor relatively, because this medicine has used in agricultural production for many years, at present, the desinsection list has made insect produce serious pesticide resistance.
The different cultivars composition carries out composite, is the very common method of control resistant insect.Heterogeneity is carried out composite, according to practical application effect, judge certain composite be synergy, add and or antagonism.In most cases, the composite effect of agricultural chemicals all is an additive effect, and the seldom composite of synergistic effect really arranged, especially synergistic effect very obviously, co-toxicity coefficient very high composite just still less.Through inventor research, find MTI-446 and desinsection list can produce good synergistic effect after composite, and still unexposed about the composite relevant report of MTI-446 and desinsection list.
Summary of the invention
The objective of the invention is to:, provide a kind of composite MTI-446 and desinsection list Pesticidal combination at the practical problem of using MTI-446 at present separately and desinsection list pest control dosage is big, cost is high, the repeated use insect easily produces resistance.Because MTI-446 is different fully to the mechanism of action of target pest with the desinsection list, both composite uses can fully improve drug effect, enlarge insecticidal spectrum, improve insecticidal effect, reduce dosage, reduce cost, and delay the generation of pest resistance to insecticide.
The object of the present invention is achieved like this: contain the Pesticidal combination of MTI-446 and desinsection list, comprise effective active component, auxiliary agent and fill out agent, the weight proportion of effective active composition MTI-446 and desinsection list is 1~40: 1~80.
The described Pesticidal combination that contains MTI-446 and desinsection list, the percentage by weight of MTI-446 and desinsection list is 1~25: 5~60.
The described Pesticidal combination that contains MTI-446 and desinsection list, the percentage by weight of MTI-446 and desinsection list is 5~20: 10~40.
The described Pesticidal combination that contains MTI-446 and desinsection list can be made into wetting powder, water dispersible granules and suspending agent.
When making wetting powder, composition comprises following constituent content: MTI-446 1~40%, desinsection list 1~80%, dispersant 5~10%, wetting agent 2~10%, filler 9~91%.
The former medicine of MTI-446, the former medicine of desinsection list, dispersant, wetting agent, filler are mixed, in mixed cylinder, mix, after airslide disintegrating mill is pulverized, mix again, promptly can be made into MTI-446 desinsection list wetting powder product.
Described dispersant is selected from polycarboxylate, lignosulfonates, the phonetic formaldehyde condensation products sulphate of alkylphenol-polyethenoxy, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol-polyethenoxy is phonetic, aliphatic amine polyoxyethylene is phonetic, in phonetic one or more of polyoxyethylene carboxylate, ester polyoxyethylene.
Described wetting agent is selected from: one or more in lauryl sodium sulfate, neopelex, Nekal BX, wetting and penetrating agent F, spaonin powder, silkworm excrement, the soapberry powder.
Described filler is selected from: one or more in kaolin, diatomite, bentonite, attapulgite, white carbon, starch, the precipitated calcium carbonate.
When making water dispersible granules, composition comprises following constituent content: MTI-446 1~40%, desinsection list 1~80%, dispersant 3~12%, wetting agent 1~8%, disintegrant 1~10%, binding agent 1~8%, filler 8~92%.
MTI-446, desinsection list, dispersant, wetting agent, disintegrant, filler etc. are obtained the particle diameter that needs through comminution by gas stream together, add other auxiliary agents such as adhesive again, obtain the materials of granulating.It is interior through after granulation and the drying to expect that product are quantitatively sent the fluidized bed granulation dryer to, makes MTI-446 desinsection list water dispersible granules product.
Described dispersant is selected from polycarboxylate, lignosulfonates, the phonetic formaldehyde condensation products sulphate of alkylphenol-polyethenoxy, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol-polyethenoxy is phonetic, aliphatic amine polyoxyethylene is phonetic, in phonetic one or more of polyoxyethylene carboxylate, ester polyoxyethylene.
Described wetting agent is selected from: one or more in lauryl sodium sulfate, neopelex, Nekal BX, wetting and penetrating agent F, spaonin powder, silkworm excrement, the soapberry powder.
Described disintegrant is selected from: one or more in bentonite, urea, ammonium sulfate, the aluminium chloride.
Described filler is selected from: one or more in kaolin, diatomite, bentonite, attapulgite, white carbon, starch, the precipitated calcium carbonate.
Comprise following constituent content when composition is made suspending agent: MTI-446 1~20%, desinsection list 1~40%, dispersant 2~10%, wetting agent 2~10%, defoamer 0.1~1%, thickener 0.1~2%, antifreeze 0.1~8%, emulsifier 0.5%~5%, deionized water add to 100%.
Dispersant, wetting agent, defoamer, thickener, antifreeze, emulsifier in the above-mentioned formulation material are mixed through high speed shear, add MTI-446, desinsection list, ball milling is 2~3 hours in ball mill, makes diameter of particle all below 5 μ m, makes MTI-446 desinsection list suspending agent product.
Described dispersant is selected from polycarboxylate, lignosulfonates, the phonetic formaldehyde condensation products sulphate of alkylphenol-polyethenoxy, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol-polyethenoxy is phonetic, aliphatic amine polyoxyethylene is phonetic, in phonetic one or more of polyoxyethylene carboxylate, ester polyoxyethylene.
Described wetting agent is selected from: one or more in lauryl sodium sulfate, neopelex, Nekal BX, wetting and penetrating agent F, spaonin powder, silkworm excrement, the soapberry powder.
Described antifreeze is selected from: one or more in ethylene glycol, propane diols, glycerine, the polyethylene glycol.
Described defoamer is selected from: one or more in silicone oil, silicone compound, C10 one 20 saturated fat acid compounds, the C8-10 aliphatic alcohols compound.
Described thickener is selected from: one or more in xanthans, melon glue, gelatin, gum Arabic, polyvinyl alcohol, the polyethylene glycol.
The invention has the advantages that: after (1) MTI-446 and desinsection list are composite, have notable synergistic and lasting effect; (2) enlarged insecticidal spectrum, to paddy rice rice hoppers, paddy stem borer, striped rice borer, rice leaf roller, brassicaceous vegetable diamond-back moth, aphid, and the sugarcane insect greater activity is arranged; (3) reduce the dosage of agricultural chemicals, reduced the residual quantity of agricultural chemicals on crop, alleviated environmental pollution; (4) speed of action is fast: (5) are good to person poultry safety, Environmental compatibility, insect is difficult for developing immunity to drugs.
Embodiment
To further instruction of the present invention, the percentage among the embodiment all is weight percentage below in conjunction with embodiment, but the present invention is not limited thereto.
The embodiment of the invention is the method that adopts Toxicity Determination and field trial to combine.Pass through Toxicity Determination earlier, the co-toxicity coefficient (CTC) after clear and definite two kinds of medicaments are composite by a certain percentage, CTC<80 are antagonism, and 80≤CTC≤120 are summation action, and CTC>120 are synergistic effect, on this basis, carry out field trial again.
Application example one
The control paddy rice rice leaf roller test of pesticide effectiveness:
MTI-446 5%, desinsection list 35%, lauryl sodium sulfate 6%, Negel 5%, draw back powder 3%, kaolin adds to 100%, production technology makes 40% MTI-446 desinsection list wetting powder routinely.This proportioning is by 3500 times of dilution sprayings, 72 hours control efficiency are 95.6% behind the medicine, 20% MTI-446 wetting powder and 90% desinsection list soluble powder dilute 3000 times and 1000 times of uses respectively according to same quadrat method, and 72 hours preventive effects are respectively 67.8% and 46.3% behind the medicine.
Application example two
The control Chinese cabbage beet armyworm test of pesticide effectiveness:
Add to 100% by MTI-446 10%, desinsection list 40%, neopelex 8%, sodium lignin sulfonate 4%, white carbon 3%, kaolin, production technology makes 50% MTI-446 desinsection list wetting powder routinely.This proportioning is by 4000 times of dilution sprayings, 72 hours control efficiency are 97.8% behind the medicine, 20% MTI-446 wetting powder and 90% desinsection list soluble powder dilute 3000 times and 1000 times of uses respectively according to same quadrat method, and 72 hours preventive effects are respectively 81.2% and 65.5% behind the medicine.
Application example three
The control wild cabbage diamond-back moth test of pesticide effectiveness:
Add to 100% by MTI-446 40%, desinsection list 20%, neopelex 8%, sldium lauryl sulfate 4%, white carbon 8%, bentonite, production technology makes 60% MTI-446 desinsection list wetting powder routinely.This proportioning is by 7000 times of dilution sprayings, 72 hours control efficiency are 94.2% behind the medicine, 20% MTI-446 water dispersible granules and 90% desinsection list soluble powder dilute 3000 times and 1000 times of uses respectively according to same quadrat method, and 72 hours preventive effects are respectively 80.3% and 61.8% behind the medicine.
Application example four
The control paddy rice paddy stem borer test of pesticide effectiveness:
Add to 100% by MTI-446 2%, desinsection list 80%, lignosulfonates 4%, lauryl sodium sulfate 4%, white carbon 3%, bentonite, production technology makes 82% MTI-446 desinsection list wetting powder routinely.This proportioning is by 6000 times of dilution sprayings, 72 hours control efficiency are 97.57% behind the medicine, 20% MTI-446 wetting powder and 90% desinsection list soluble powder dilute 3000 times and 1000 times of uses respectively according to same quadrat method, and 72 hours preventive effects are respectively 81.4% and 61.5% behind the medicine.
Application example five
Prevent and treat the rice hoppers test of pesticide effectiveness:
Add to 100% by MTI-446 2%, desinsection list 40%, two sodium naphthasulfonate 5%, spaonin powder 3%, urea 3%, ammonium sulfate 2%, polyethylene glycol 1%, kaolin, production technology makes 42% MTI-446 desinsection list water dispersible granules routinely.This proportioning is by 3500 times of dilution sprayings, preventing and treating the rice hoppers effect in 72 hours behind the medicine is 97.3%, 25% MTI-446 water dispersible granules and 90% desinsection list water dispersible granules dilute 3000 times and 1000 times of uses respectively according to same quadrat method, and 72 hours preventive effects are respectively 70.3% and 76.4% behind the medicine.
Application example six
The control cotton aphid test of pesticide effectiveness:
Add to 100% by MTI-446 3%, desinsection list 46%, neopelex 2%, sodium lignin sulfonate 0.8%, urea 1%, sodium carbonate 5%, polyvinylpyrrolidone 0.3%, kaolin, join production technology routinely and make 49% MTI-446 desinsection list water dispersible granules.This proportioning is by 5000 times of dilution sprayings, 72 hours control cotton aphid effects are 95.2% behind the medicine, 25% MTI-446 water dispersible granules and 90% desinsection list water dispersible granules dilute 3000 times and 1000 times of uses respectively according to same quadrat method, and 72 hours preventive effects are respectively 72.1% and 76.4% behind the medicine.
The application example seven control rice-stem borer tests of pesticide effectiveness
MTI-446 25%, desinsection list 45%, polycarboxylate 4%, spaonin powder 4%, white carbon 10%, ammonium sulfate 6%, kaolin add to 100%, and mixture carries out comminution by gas stream, make 70% MTI-446 desinsection list water dispersible granules.This prescription is by 6000 times of dilution sprayings, and 72 hours control rice-stem borer effects are 91.94%~95.76% behind the medicine.25% MTI-446 wetting powder and 90% desinsection list soluble powder dilute 3000 times and 1000 times of uses respectively according to same quadrat method, and 72 hours preventive effects are respectively 78.75% and 85.27% behind the medicine.In experiment, the inventor does not find that test medicine has harmful effect to crop, to beneficial insect safety.
The application example eight control paddy rice paddy stem borer tests of pesticide effectiveness
MTI-446 20%, desinsection list 60%, neopelex 4%, alkylnaphthalene sulfonate formaldehyde condensation products 2%, polycarboxylate 4%, crospolyvinylpyrrolidone 2%, bentonite add to 100%, the mixed 80% MTI-446 desinsection list water dispersible granules that gets.This proportioning is by 6000 times of dilution sprayings, 72 hours control paddy rice paddy stem borer effects are 93.02%~97.54% behind the medicine, 25% MTI-446 wetting powder and 90% desinsection list soluble powder are according to same quadrat method, dilute 1500 times and 3000 times of uses respectively, 72 hours preventive effects are respectively 80.20% and 82.14% behind the medicine.In experiment, the inventor does not find that test medicine has harmful effect to crop, to beneficial insect safety.
Application example nine
Prevent and treat the rice hoppers test of pesticide effectiveness:
MTI-446 1%, desinsection list 20%, neopelex 8%, ethylnaphthalene sodium sulfonate 5%, lauric acid 1%, xanthans 2%, propane diols 8%, water add to 100%, and the aforementioned formula material is mixed, and promptly make 21% MTI-446 desinsection list suspending agent.This prescription is by 1500 times of liquid dilution sprayings, preventing and treating the rice hoppers effect in 72 hours behind the medicine is 96.86%, and 20% MTI-446 wetting powder and 90% desinsection list soluble powder dilute use according to dilute 3000 times and 1000 times respectively with quadrat method, and 72 hours control efficiency are respectively 76.31% and 63.32% behind the medicine.
Application example ten
The control sugarcane aphid test of pesticide effectiveness:
MTI-446 5%, desinsection list 30%, alkylbenzenesulfonate 4%, sodium lignin sulfonate 5%, SDS 5%, melon glue 0.8%, polyethylene glycol 3%, lauric acid 1%, water add to 100%, through the mixed 35% MTI-446 desinsection list suspending agent that gets.This prescription is by 2500 times of liquid dilution sprayings, 72 hours control efficiency are 92.74% behind the medicine, and 20% MTI-446 wetting powder and 90% desinsection list soluble powder be according to diluting 3000 times and 1000 times of uses respectively with quadrat method, and 72 hours control efficiency are respectively 78.53% and 64.14% behind the medicine.
Application example 11
The control brassicaceous vegetable cabbage caterpillar test of pesticide effectiveness:
MTI-446 5%, desinsection list 40%, alkylphenol polyoxyethylene class 3%, lignosulfonates 5%, neopelex 3%, glycerine 2%, gelatin 2%, water add to 100%, the mixed 45% MTI-446 desinsection list suspending agent that gets.This proportioning is by 3500 times of dilution sprayings, 72 hours control efficiency are 97.72% behind the medicine, 20% MTI-446 wetting powder and 90% desinsection list soluble powder dilute 3000 times and 1000 times of uses respectively according to same quadrat method, and 72 hours preventive effects are respectively 76.27% and 63.62% behind the medicine.
Application example 12
The control vegetables diamond-back moth test of pesticide effectiveness:
MTI-446 10%, desinsection list 35%, alkyl benzene sulfonate calcium salt 5%, alkylphenol-polyethenoxy is phonetic 5%, lauryl sodium sulfate 3%, xanthans 2%, phosphite ester 2%, water adds to 100%, mixed 45% MTI-446 desinsection list suspending agent.This prescription is by 3500 times of liquid dilution sprayings, 72 hours control vegetables diamond-back moth effects are 94.54% behind the medicine, and 20% MTI-446 wetting powder and 90% desinsection list soluble powder be according to diluting 3000 times and 1000 times of uses respectively with quadrat method, and 72 hours control efficiency are respectively 74.31% and 61.83% behind the medicine.
Application Example one
For trying insect: the paddy rice rice leaf roller.
Tested medicine: preparation of the present invention;
Test medicine all has Shaanxi Welch Crop Protection Co., Ltd. to provide
Test method: respectively the mother liquor of each mixed agent of MTI-446 desinsection list is diluted to above five series concentration during test, places beaker standby respectively.Adopt and to soak the method that connects worm behind the leaf earlier, the of the same size fresh paddy rice leaf that does not contact any medicament soaked in the soup that configures behind the 5s take out, dry naturally, put into insect box, connect then, under 25 ℃ of conditions, raise for examination 3 instar larvaes, every processing repeats for 3 times, every to repeat used examination borer population be 20, establishes blank simultaneously, checks dead borer population in 72h, calculate lethality and corrected mortality, try to achieve virulence regression equation and calculate LC
50Value.If the contrast lethality then is considered as invalid test greater than 10%.Computing formula is as follows:
Paddy rice rice leaf roller corrected mortality is converted into probit value (y), and concentration of treatment (μ g/ml) converts logarithm value (x) to, draws virulence regression equation with method of least squares, and calculates the value of every kind of medicament thus.Calculate co-toxicity coefficient CTC according to the abundant equation of Sun Yun.Computing formula following (with the MTI-446 is the standard medicament, and its toxicity index is 100):
TI * the P of theoretical toxicity index (TTI)=MTI-446 of M
MTI-446TI * the P of+desinsection list
The desinsection list
In the formula: M is the mixture of different proportionings
P
The desinsection listBe the single shared ratio in composition of desinsection
P
MTI-446Be MTI-446 shared ratio in composition
Experimental result is as shown in table 1:
Table 1 MTI-446 and desinsection list and composite toxicity test thereof to the paddy rice rice leaf roller
As shown in Table 1, MTI-446, desinsection list are composite to paddy rice rice leaf roller Toxicity Determination, the two between 40: 1 to 1: 80 co-toxicity coefficient all greater than 120, be synergistic function, especially MTI-446: singly at 1: 1 between 1: 20 the time, synergistic effect was more obvious outstanding for desinsection, when the two proportioning during at 1: 10, the co-toxicity coefficient maximum, synergistic effect is the most obvious.