CN104365656B - A kind of highly efficiency compositional composition pesticide containing MTI-446 - Google Patents
A kind of highly efficiency compositional composition pesticide containing MTI-446 Download PDFInfo
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- CN104365656B CN104365656B CN201410032969.7A CN201410032969A CN104365656B CN 104365656 B CN104365656 B CN 104365656B CN 201410032969 A CN201410032969 A CN 201410032969A CN 104365656 B CN104365656 B CN 104365656B
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Abstract
A kind of highly efficiency compositional composition pesticide containing MTI-446, belongs to Chemical Control of Harmful Insects technical field。Being composited by MTI-446 and phenthoate dimephenthoate cidial, the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1～30: 1～50。The 1%-70% that the cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is described composition total weight。The invention has the beneficial effects as follows: the compounded combination of the present invention compared with prior art, produces following beneficial effect: (1), compared with single dose, said composition is obvious to planthopper and striped rice borer potentiation, can improve prevention effect；(2) alternative high toxicity pesticide, and reduce dosage, effectively reduce ecological environmental pollution and pesticide residues in rice；(3) quick-acting and long holding effect characteristic is had concurrently；(4) insect such as planthopper and the striped rice borer Drug resistance to single medicament is suppressed；(5) compared with single dose, two kinds of single dose combinations can reduce application cost。
Description
Technical field
The invention belongs to Chemical Control of Harmful Insects technical field, be specifically related to a kind of pesticide compositional combination that planthopper and snout moths larva are had potentiation。
Technical background
Oryza sativa L. is the cereal crops that China is important, and rice safety produces and Chinese national economy development and Ensuring Food Safety tool are of great significance。
In recent years, planthopper and snout moths larva have become the significant threat of China's Rice Production。The mid-90 in last century, due to the large scale application of imidacloprid, the efficient and long-lasting nature of this medicine makes Planthopper Outbreaks risk be greatly reduced, and however as the long-term unreasonable use of this medicine, causes that brown paddy plant hopper is to which creating serious Drug resistance。Currently, chemical control is still and controls the Main Means that planthopper is caused harm, and whether prevention and control medication is made an accurate selection of, and is directly connected to the success or failure of prevention and control。The medicaments such as MTI-446, pymetrozine, Diacloden and Nitenpyram become the major pharmaceutical agent of preventing and treating planthopper, although these medicaments are higher to the preventive effect of planthopper, but, the preventive effect of the snout moth's larvas of rice such as striped rice borer is undesirable。
Snout moths larva is an endogenic rice grub of class, Oryza sativa L. of causing harm causes the withered heart and dead ears, the medicaments such as the Rynaxypyr that the du pont company of introduction in recent years produces, the lepidoptera pests such as the preventing and treating snout moth's larva of rice, dosage is few, and preventive effect is good, but pesticide price is higher, spread uses also certain difficulty and the anti-heterodyne to planthopper。Need exploitation that planthopper and striped rice borer is quick-acting and long-acting have both and cheap medicament, to guarantee the safe and efficient production of Oryza sativa L.。
Summary of the invention
It is an object of the invention to for defect described above, it is provided that a kind of that planthopper and snout moths larva is all efficient, have quick-acting and long-acting Pest control efficacy concurrently and suppress insect to the drug-fast highly efficiency compositional composition pesticide containing MTI-446 of single insecticide (MTI-446, phenthoate dimephenthoate cidial)。
It is an object of the invention to be achieved by the following technical programs。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1～30: 1～50, it is preferred that the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1～20: 1～50。
The 1%-70% that the cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is described composition total weight, it is preferred to 5%-40%。
The invention has the beneficial effects as follows: the compounded combination of the present invention compared with prior art, produces following beneficial effect: (1), compared with single dose, said composition is obvious to planthopper and striped rice borer potentiation, can improve prevention effect；(2) alternative high toxicity pesticide, and reduce dosage, effectively reduce ecological environmental pollution and pesticide residues in rice；(3) quick-acting and long holding effect characteristic is had concurrently；(4) insect such as planthopper and the striped rice borer Drug resistance to single medicament is suppressed；(5) compared with single dose, two kinds of single dose combinations can reduce application cost。
Detailed description of the invention
Below by way of specific embodiment, the invention will be further described, and the corresponding test of combination further illustrates beneficial effects of the present invention。
Embodiment 1。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1: 29。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 30% of described composition total weight。
Embodiment 2。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1: 14。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 30% of described composition total weight。
Embodiment 3。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1: 9。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 30% of described composition total weight。
Embodiment 4。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1: 7。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 30% of described composition total weight。
Embodiment 5。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1: 5。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 30% of described composition total weight。
Embodiment 6。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1: 3。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 30% of described composition total weight。
Embodiment 7。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 29: 1。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 70% of described composition total weight。
Embodiment 8。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 14: 1。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 60% of described composition total weight。
Embodiment 9。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 9: 1。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 50% of described composition total weight。
Embodiment 10。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 7: 1。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 40% of described composition total weight。
Embodiment 11。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 5: 1。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 30% of described composition total weight。
Embodiment 12。
A kind of highly efficiency compositional composition pesticide containing MTI-446, is composited by MTI-446 and phenthoate dimephenthoate cidial, and the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 3: 1。The cumulant of described MTI-446 and phenthoate dimephenthoate cidial (weight add and) is the 70% of described composition total weight。
Test one (indoor bioassay)。
1. reagent agent preparation。
The 95% former medicine of MTI-446 is produced by Hubei Sheng Long Chemical Co., Ltd.；95% phenthoate dimephenthoate cidial crude oil is produced by Jiangsu Tenglong Biological Pharmaceutical Co., Ltd.。Weigh a certain amount of phenthoate dimephenthoate cidial and the former medicine of MTI-446, after phenthoate dimephenthoate cidial acetone solution, be made into 40% phenthoate dimephenthoate cidial single dose with the distilled water containing 1% Tween 80；MTI-446 water dissolution is made into 20% MTI-446 single dose, then by different ratio, MTI-446 and phenthoate dimephenthoate cidial is mixed (see table 1 and table 2)。
2. for examination insecticide。
Planthopper is gather brown paddy plant hopper 3 nymph in age after indoor feeding 1 generation from field, and snout moths larva is gather striped rice borer 4 instar larvae after indoor feeding 1 generation from field。
3. assay method。
A, brown paddy plant hopper: adopt rice-stem dipping method。Accurate quantitative analysis weighs reagent agent, phenthoate dimephenthoate cidial acetone solution, MTI-446 water dissolution is diluted to certain density mother solution, add the TritonX-100 of 10%, 5 series concentration are become by proportional diluted again with distilled water, grub out the rice strain taking healthy and strong consistent tillering regularity to the booting initial stage, clean, it is cut into company's root rice stem of about 10cm length, 3 strains 1 group, dry in the air to surface without washmarking in shady and cool place, take out after rice stem is soaked 30s in medicinal liquid and dry, encase root with the absorbent cotton of dipping and put in disposal plastic cup, support from field label taking the Oryza sativa L. of worm net accurate consistent 3 mid-term in age nymph, in the disposal plastic cup that the level of putting into is sidelong, often pipe 20, all climb up rice stem or wall of cup until nymph after vertical again, reject the individuality of mechanical damage, and supply 20, each concentration repeats 4 times, with clear water for comparison。Put into temperature after connecing worm for (26 ± 1) DEG C, the photoperiod be L:D=16:8h constant temperature culture room in cultivate。Noting the absorbent cotton moisturizing of rice rhizome after process, anti-rice stem is withered, checks dead borer population after 120h。With the mortality rate of Abbott formula correction process group, seek virulence regression equation with DPS software。Calculate LC50Value and 95% confidence limit, and press the method calculating co-toxicity coefficient of Sun Yunpei。
B, striped rice borer: feedstuff mixed poison method。MTI-446 water dissolution, phenthoate dimephenthoate cidial acetone solution。First accurately pipette above-mentioned medicinal liquid by the accurate pipettor of desired concn some in plastics by microwave bowl, and mix with the dilution of the 30ml sterilizing distilled water containing 1% tween 80。Then by the man-made feeds formula formula feed of Institute of Plant Protection of the Chinese Academy of Agricultural Sciences invention, when feedstuff cooled and solidified (non-scald on hand) not yet completely, the above-mentioned plastic bowl being ready for medicinal liquid adds 270g feedstuff and immediately with the mixing of hand electric agitator, be positioned in refrigerator after its cooled and solidified and save backup。Mixed poison feedstuff is cut into thickness be the block of about 5mm gripping to the culture dish of 6cm, every ware is chosen into 4 age Chilo spp larvae 10, the black cotton of ware lid, finally cover culture dish upper cover, being placed in temperature 27 ± 1 DEG C, relative humidity 70%, in the incubator of L:D=16:8。The dead borer population of 48h investigation after process。Each concentration sets 4 repetitions, often repeats 10, and sets the CK comparison of not pastille。Calculate virulence regression equation and the LC50 of each process, and the method pressing Sun Yunpei calculates co-toxicity coefficient。
4, result of the test。
The virulence of 4.1 pairs of brown paddy plant hoppers。
Result of the test is in Table。As can be seen from Table 1, the potentiation bioassay results of brown paddy plant hopper is shown: phenthoate dimephenthoate cidial and MTI-446 are at active ingredient ratio during more than 3:1, brown paddy plant hopper is all shown potentiation, wherein phenthoate dimephenthoate cidial and MTI-446 in active ingredient ratio be 29:1,14:1,9:1,7:1,5:1 and 3:1 composite time, its co-toxicity coefficient respectively 226,251,330,403,276 and 229, it was shown that after two kinds of pesticide compositionals, brown paddy plant hopper is had significant potentiation。
Table 1. MTI-446, phenthoate dimephenthoate cidial and different ratio thereof the toxicity test result to planthopper
The virulence of 4.2 pairs of striped rice borer。
The potentiation bioassay results of striped rice borer is shown: striped rice borer is shown potentiation by the part proportioning of MTI-446 and phenthoate dimephenthoate cidial, wherein MTI-446 and phenthoate dimephenthoate cidial in active ingredient ratio be 1:7,1:9 and 1:14 composite time, its co-toxicity coefficient is all higher, respectively 183,235 and 143, it was shown that after these two kinds of composite reagents, striped rice borer is had significant potentiation (table 2)。
Table 2. MTI-446, phenthoate dimephenthoate cidial and different ratio thereof the toxicity test result to striped rice borer
Test two (field control effectiveness tests)。
For verifying the reliability of proportioning screening, according to the requirement of pesticide field efficacy medicine test criterion (one) GB/T17980.1-2000, part formulation is carried out the test of pesticide effectiveness of field control striped rice borer in May, 2013；According to the requirement of pesticide field efficacy medicine test criterion (one) GB/T17980.4-2000, part formulation was carried out on semilate rice (two line system) in mid-August, 2013 field control effectiveness test of preventing and treating planthopper。
1, striped rice borer field control effectiveness test。
1., test medicine and consumption:
2., test method: adopting random district, field group to arrange community, plot area is 50m2/ community, often processes and repeats 4 times。Striped rice borer 1-2 instar larvae occurrence in peak period, add water 750 liters by per hectare dosage and after diluting, adopt power sprayer even spraying dispenser 1 time, when field snout moths larva is caused harm basicly stable (when shape of being injured in blank district is obvious), parallel jump method is adopted to sample, 50 clumps of Oryza sativa L. of every community investigation。Investigation Oryza sativa L. total strain number, withered heart strain number and remaining larva number, add up withered heart rate and larval mortality。Calculate prevention effect。
3., result of the test: result is in Table 3。
Table 3. MTI-446 phenthoate dimephenthoate cidial mixed agent preventing and treating striped rice borer result of the test statistical table
Result of the test shows: the withered heart preventive effect of striped rice borer is 79.15% by 20% MTI-446 50ml/ mu, and larva preventive effect is 80.71%, and the withered heart preventive effect of striped rice borer is 84.38% by 40% phenthoate dimephenthoate cidial 150ml/ mu, and larva preventive effect is 85.71%。The withered heart preventive effect of formula 1150 and 100ml/ mu respectively 89.27% and 84.71%, to the preventive effect of larva respectively 91.07% and 88.57%；The withered heart preventive effect of formula 2150 and 100ml/ mu respectively 98.89% and 96.83%, to the preventive effect of larva respectively 99.64% and 98.93%；The withered heart preventive effect of formula 3150 and 100ml/ mu respectively 96.52% and 94.23%, to the preventive effect of larva respectively 97.14% and 97.14%。The above results shows, the preventive effect of striped rice borer is above two single doses by 3 mixed agents, additionally, mixed agent and two single dose applying areas, paddy growth is normal, occurs without symptom of chemical damage。
2, planthopper field control effectiveness test。
1., test medicine and consumption。
2., test method: adopting random district, field group to arrange community, plot area is 60m2/ community。Often process and repeat 4 times。When hundred clumps of worm amounts of planthopper reach 1000, add water 750 liters by per hectare dosage and after diluting, adopt power sprayer even spraying dispenser 1 time, before medicine, investigate insect population radix, 3,7 and 14 days difference sampling survey population number after medicine。Adopting parallel jump method to sample, 10 points are investigated in every community, every 2 clumps of Oryza sativa L., and method clapped by dish, add up plant hopper quantity, calculate prevention effect。
3., result of the test: result is in Table 4。
Table 4. MTI-446 phenthoate dimephenthoate cidial mixed agent preventing and treating planthopper result of the test statistical table
Result of the test shows: after medicine 3 days, and the preventive effect of planthopper is 85.23% by 20% MTI-446 50ml/ mu, and the preventive effect of 40% phenthoate dimephenthoate cidial 150ml/ mu is 86.11%。(formula 1) 150 and 100ml/ mu are to the preventive effect of planthopper respectively 89.30% and 85.70%；Formula 2150 and 100ml/ mu are to the preventive effect of planthopper respectively 88.07% and 84%；Formula 3150 and 100ml/ mu are to the preventive effect of planthopper respectively 90.71% and 86.37%。
After medicine 7 days, the preventive effect of planthopper was 90.88% by 20% MTI-446 50ml/ mu, and the preventive effect of 40% phenthoate dimephenthoate cidial 150ml/ mu is 83.27%。Formula 1150 and 100ml/ mu are to the preventive effect of planthopper respectively 83.86% and 82.95%；Formula 2150 and 100ml/ mu are to the preventive effect of planthopper respectively 92.11% and 89.47%；Formula 3150 and 100ml/ mu are to the preventive effect of planthopper respectively 94.37% and 91.59%。
After medicine 14 days, the preventive effect of planthopper was 86.31% by 20% MTI-446 50ml/ mu, and the preventive effect of 40% phenthoate dimephenthoate cidial 150ml/ mu is 74.73%。Formula 1150 and 100ml/ mu are to the preventive effect of planthopper respectively 80.14% and 79.62%；Formula 2150 and 100ml/ mu are to the preventive effect of planthopper respectively 89.6% and 85.82%；Formula 3150 and 100ml/ mu are to the preventive effect of planthopper respectively 92.07% and 88.08%。
Additionally, mixed agent and two single dose applying areas, paddy growth is normal, occurs without poisoning。
Claims (3)
1. the highly efficiency compositional composition pesticide containing MTI-446, it is characterised in that: being composited by MTI-446 and phenthoate dimephenthoate cidial, the mass ratio of MTI-446 and phenthoate dimephenthoate cidial is 1: 3～29。
2. a kind of highly efficiency compositional composition pesticide containing MTI-446 according to claim 1, it is characterised in that: the weight of described MTI-446 and phenthoate dimephenthoate cidial adds and is the 1%-70% of described composition total weight。
3. a kind of highly efficiency compositional composition pesticide containing MTI-446 according to claim 2, it is characterised in that: the weight of described MTI-446 and phenthoate dimephenthoate cidial adds and is the 5%-40% of described composition total weight。
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