Background technology
Thiophene worm piperazine, English common name (thiamethoxam), chemical name 3-(2-chloro-1,3-thiazoles-5-ylmethyl)-5-methyl isophthalic acid, 3,5-oxadiazines-4-base fork (nitro) amine.This medicine is a kind of novel high-efficiency low-toxicity broad spectrum pesticide.Be second generation anabasine insecticide, the mechanism of action is similar to first generation anabasine insecticides such as Imidacloprids, but has higher activity.To insect have stomach toxicity, tag, systemic action, characteristics such as speed of action is fast, the lasting period is long.Better to preventive effects such as sucking pest such as aphid, plant hopper, leafhopper, aleyrodids.
Fipronil bisamide, English common name flubendiamide, chemical name be 3-iodo-N '-(2-mesyl-1,1-dimethyl ethyl group-N-{4-[1,2,2,2-tetrafluoro-1-(trifluoromethyl) ethyl]-the 0-tolyl phthalamide, molecular formula is C
23H
22F
7IN
2O
4S.Belong to novel phthalic amide insecticides, activate calcium release channel in blue Buddhist nun's alkali recipient cell, the property out of control release that causes storing calcium ion.It is the compound that acts on blue Buddhist nun's alkali (Ryanodine) acceptor of insect cell at present few in number.Lepidoptera pest there is the wide spectrum preventive effect, does not have cross resistance with existing insecticide and produce, be suitable for very much the control that existing insecticide produces the insect of resistance.Larva there is very outstanding preventive effect, limited to the adult preventive effect, there is not ovicidal action.Slightly conduct by xylem the back in the infiltration plant body.Resistance of rainwater washing against.
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.Important insect such as lepidoptera pest are because its breeding cycle is short, and breeding amount is big, and mobility is little on the agricultural, and selfing degree height is easy to generate resistance especially.
Go up the insect that produces resistance for control agricultural, a kind of way is to release the new component that new and existing kind do not have cross resistance.But, the development cost height of new active ingredient, the construction cycle is long, and all produces the speed of resistance forever less than insect.Other method such as crop allocation adjustment, different agricultural chemicals are rotated etc., in the process of practical operation, are difficult to really play obvious effects.
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 thiophene worm piperazine and fipronil bisamide can produce good synergistic effect after composite, and still unexposed about the composite relevant report of thiophene worm piperazine and fipronil bisamide.
Summary of the invention
The objective of the invention is to:, provide a kind of composite thiophene worm piperazine and fipronil bisamide Pesticidal combination at the practical problem of using thiophene worm piperazine at present separately and fipronil bisamide pest control dosage is big, cost is high, the repeated use insect easily produces resistance.Because thiophene worm piperazine is different fully to the mechanism of action of target pest with fipronil bisamide, both composite uses can fully improve drug effect, 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: a kind of thiophene worm piperazine and fipronil bisamide complex insecticidal composition comprise effective active component, auxiliary agent and fill out agent that the weight proportion of effective active composition thiophene worm piperazine and fipronil bisamide is 1~30: 50~1.
Described thiophene worm piperazine and fipronil bisamide complex insecticidal composition, the percentage by weight of thiophene worm piperazine and fipronil bisamide are 5~25: 40~5.
Described thiophene worm piperazine and fipronil bisamide complex insecticidal composition, the percentage by weight of thiophene worm piperazine and fipronil bisamide are 5~20: 30~10.
Described thiophene worm piperazine and fipronil bisamide complex insecticidal composition can be made into wetting powder, water dispersible granules, suspending agent.
When making wetting powder, composition comprises following constituent content: thiophene worm piperazine 1~30%, fipronil bisamide 1~50%, wetting agent 2~10%, dispersant 5~10%, filler 8~90%.
The former medicine of thiophene worm piperazine, the former medicine of fipronil bisamide, wetting agent, dispersant, filler are mixed, in mixed cylinder, mix, after airslide disintegrating mill is pulverized, mix again, promptly can be made into thiophene worm piperazine fipronil bisamide wetting powder product.
When making water dispersible granules, composition comprises following constituent content: thiophene worm piperazine 1~30%, fipronil bisamide 1~50%, dispersant 3~12%, wetting agent 1~8%, disintegrant 1~10%, binding agent 1~8%, filler 10~90%.
The former medicine of thiophene worm piperazine, the former medicine of fipronil bisamide, 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 thiophene worm piperazine fipronil bisamide water dispersible granules product.
Comprise following constituent content when composition is made suspending agent: thiophene worm piperazine 1~20%, fipronil bisamide 1~30%, dispersant 2~10%, wetting agent 2~10%, defoamer 0.1~1%, thickener 0.1~2%, antifreeze 0.1~8%, deionized water add to 100%.
Dispersant, wetting agent, defoamer, thickener, antifreeze in the above-mentioned formulation material are mixed through high speed shear, add the former medicine of thiophene worm piperazine, the former medicine of fipronil bisamide, ball milling is 2~3 hours in ball mill, make diameter of particle all below 5 μ m, make thiophene worm piperazine fipronil bisamide suspension agent product.
The invention has the advantages that: after (1) thiophene worm piperazine and fipronil bisamide are composite, have notable synergistic and lasting effect; (2) enlarged insecticidal spectrum, aphid, rice fulgorid, rice leaf roller, diamond-back moth, beet armyworm have been had greater activity; (3) reduce the dosage of agricultural chemicals, reduced the residual quantity of agricultural chemicals on crop, alleviated environmental pollution; (4), insect good to person poultry safety, Environmental compatibility 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
Prevent and treat the rice hoppers test of pesticide effectiveness:
Add to 100g by thiophene worm piperazine 10g, fipronil bisamide 20g, two sodium naphthasulfonate 5g, spaonin powder 3g, urea 3g, ammonium sulfate 2g, polyethylene glycol 1g, kaolin, production technology makes 30% thiophene worm piperazine fipronil bisamide 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 96.3%, 25% thiophene worm piperazine water dispersible granules and 20% fipronil bisamide water dispersible granules are according to same quadrat method, dilute 3500 times and 3000 times of uses respectively, 72 hours preventive effects are respectively 70.3% and 76.4% behind the medicine.
Application example two
The control cotton aphid test of pesticide effectiveness:
Add to 100g by thiophene worm piperazine 10g, fipronil bisamide 40g, neopelex 2g, sodium lignin sulfonate 0.8g, urea 1g, ammonium sulfate 10g, polyvinylpyrrolidone 0.3g, kaolin, join production technology routinely and make 50% thiophene worm piperazine fipronil bisamide water dispersible granules.This proportioning is by 5000 times of dilution sprayings, 72 hours control cotton aphid effects are 94.2% behind the medicine, 25% thiophene worm piperazine water dispersible granules and 20% fipronil bisamide water dispersible granules are according to same quadrat method, dilute 1500 times and 3500 times of uses respectively, 72 hours preventive effects are respectively 72.1% and 76.4% behind the medicine.
Application example three
The control wild cabbage beet armyworm test of pesticide effectiveness:
By thiophene worm piperazine 10g, fipronil bisamide 10g, neopelex 8g, dispersing agent NNO 8g, draw back powder 3g, white carbon 8g, kaolin adds to 100g, joins production technology routinely and makes 20% thiophene worm piperazine fipronil bisamide wetting powder.This proportioning is by 2000 times of dilution sprayings, 72 hours control wild cabbage beet armyworm effects are 95.6% behind the medicine, 25% thiophene worm piperazine water dispersible granules and 20% fipronil bisamide water dispersible granules are according to same quadrat method, dilute 2500 times and 3000 times of uses respectively, 72 hours preventive effects are respectively 75.8% and 77.3% behind the medicine.
Application example four
The control paddy rice rice leaf roller test of pesticide effectiveness:
Add to 100g by thiophene worm piperazine 5g, fipronil bisamide 40g, neopelex 2g, alkylnaphthalene sulfonate formaldehyde condensation products 1g, white carbon 2g, kaolin, production technology makes 45% thiophene worm piperazine fipronil bisamide wetting powder routinely.This proportioning is by 4000 times of dilution sprayings, 72 hours control paddy rice rice leaf roller effects are 95.8% behind the medicine, 25% thiophene worm piperazine water dispersible granules and 20% fipronil bisamide water dispersible granules are according to same quadrat method, dilute 2000 times and 3000 times of uses respectively, 72 hours preventive effects are respectively 70.2% and 79.5% behind the medicine.
The application example five control wild cabbage diamond-back moth tests of pesticide effectiveness
Thiophene worm piperazine 15%, fipronil bisamide 25%, naphthalene sulfonic acid-formaldehyde condensation product sodium salt 6%, draw back powder 3%, silicone oil 0.1%, sodium carboxymethylcellulose 0.4%, deionized water adds to 100%, mixed 40% thiophene worm piperazine fipronil bisamide suspension agent.This proportioning is by 4000 times of dilution sprayings, 72 hours control wild cabbage diamond-back moth effects are 95.92% behind the medicine, 25% thiophene worm piperazine water dispersible granules and 20% fipronil bisamide water dispersible granules are according to same quadrat method, dilute 1500 times and 3000 times of uses respectively, 72 hours preventive effects are respectively 78.13% and 85.50% behind the medicine.Find that in test the present composition has no adverse effects to the target crop, to beneficial insect safety.
Application example six is prevented and treated the rice hoppers test of pesticide effectiveness
Thiophene worm piperazine 3%, fipronil bisamide 7%, sodium lignin sulfonate 4%, spaonin powder 4%, silicone compound 0.1%, polyvinyl alcohol 0.3%, propane diols 3%, deionized water add to 100%, the mixed 10% thiophene worm piperazine fipronil bisamide suspension agent that gets.This proportioning is by 1000 times of dilution sprayings, 72 hours control effect rice hoppers really are 98.26% behind the medicine, 25% thiophene worm piperazine water dispersible granules, 20% fipronil bisamide water dispersible granules is according to same quadrat method, dilute 1500 times and 3000 times of uses respectively, 72 hours preventive effects are respectively 82.74% and 81.15% behind the medicine.In experiment, the inventor does not find that test medicine has harmful effect to crop, to beneficial insect safety.
Application Example one
For the examination insect: pupa of diamond-back moth and mature larva all pick up from wild cabbage ground, suburb, Xi'an, turn into adult in the solarium, and mate and oviposit grows to behind 3 instar larvaes standby on potted plant wild cabbage.
Tested medicine: preparation of the present invention;
Drugs compared: 25% thiophene worm piperazine water dispersible granules (commercial); 20% fipronil bisamide water dispersible granules (commercial).
Experimental scheme: effective lethal concentration scope of determining thiophene worm piperazine, fipronil bisamide two single agent and the two different proportioning mixture through preliminary experiment, each medicament designs five gradient concentrations respectively by active constituent content and handles, do contrast with the space management that does not contain former medicine, concrete concentration is handled as follows:
1, thiophene worm piperazine 0.25,0.5,1,2,4 μ g/mL
2, fipronil bisamide 0.5,1,2,4,8 μ g/mL
3, thiophene worm piperazine: fipronil bisamide=1: 6 0.4,0.8,1.6,3.2,6.4 μ g/mL
4, thiophene worm piperazine: fipronil bisamide=1: 4 0.4,0.8,1.6,3.2,6.4 μ g/mL
5, thiophene worm piperazine: fipronil bisamide=1: 2 0.4,0.8,1.6,3.2,6.4 μ g/mL
6, thiophene worm piperazine: fipronil bisamide=2: 1 0.4,0.8,1.6,3.2,6.4 μ g/mL
7, thiophene worm piperazine: fipronil bisamide=4: 1 0.4,0.8,1.6,3.2,6.4 μ g/mL
8, blank
Test method: respectively the mother liquor of thiophene worm piperazine, fipronil bisamide and each mixed agent is diluted to above 5 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 cabbage leaves 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:
The diamond-back moth 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 thiophene worm piperazine is the standard medicament, and its toxicity index is 100):
TI * the P of the theoretical toxicity index (TTI) of M=thiophene worm piperazine
Thiophene worm piperazineTI * the P of+fipronil bisamide
Fipronil bisamide
In the formula: M is the mixture of different proportionings
P
Fipronil bisamideBe fipronil bisamide shared ratio in composition
P
Thiophene worm piperazineBe thiophene worm piperazine shared ratio in composition
The different proportionings with fipronil bisamide of table 1 thiophene worm piperazine are to the toxicity test of wild cabbage diamond-back moth
As shown in Table 1, thiophene worm piperazine and fipronil bisamide and composite product are to rice hoppers Toxicity Determination experiment discovery, the virulence of thiophene worm piperazine is higher than fipronil bisamide, co-toxicity coefficient is all greater than 120 when thiophene worm piperazine and fipronil bisamide proportioning are 1: 6,1: 4,1: 2,2: 1,4: 1, show obvious synergistic effect, thiophene worm piperazine thus: fipronil bisamide all had synergistic function between 1: 6 to 4: 1, especially when thiophene worm piperazine: during fipronil bisamide=1: 2, co-toxicity coefficient maximum, synergistic effect are the most obvious.So research and extension of the present invention is significant.