CN104488882B - The mixed pesticide synergistic formula of field bucket and spraying method thereof for Oryza sativa L. rice blast, false smut - Google Patents
The mixed pesticide synergistic formula of field bucket and spraying method thereof for Oryza sativa L. rice blast, false smut Download PDFInfo
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Abstract
The present invention relates to the mixed pesticide synergistic formula of a kind of field bucket for Oryza sativa L. rice blast, false smut and spraying method thereof, three kinds of pesticidal preparations mix, the active component of three kinds of pesticidal preparations respectively oxime bacterium Tebuconazole, benzene first Fluoxastrobin, kasugarnycin；The weight of oxime bacterium Tebuconazole accounts for the 10-35% of active component gross weight, and the weight of benzene first Fluoxastrobin accounts for the 10-35% of active component gross weight, and the weight of kasugarnycin accounts for the 30-80% of active component gross weight；Active component gross weight is the weight sum of oxime bacterium Tebuconazole, benzene first Fluoxastrobin, kasugarnycin three.On spraying method, before carrying out cut 5 ~ 7 days, full heading time prevent and treat twice step.The present invention is suitable in the mixed use of field bucket, take full advantage of that oxime bacterium Tebuconazole, benzene first Fluoxastrobin be high to the prevention of false smut and therapeutic activity, the kasugarnycin complementary advantage to panicle blast lasting period length, can efficiently prevent and treat Oryza sativa L. rice blast, false smut, significantly improve prevention effect, overcome the defect of single agent activity difference；Decrease field rotating medicine number of times, dosage and drug cost, reduce the pesticide pollution to paddy environment.
Description
Technical field
The present invention relates to the mixed pesticide synergistic formula of a kind of field bucket for Oryza sativa L. rice blast, false smut and spraying method thereof, especially a kind of field bucket containing oxime bacterium Tebuconazole, benzene first Fluoxastrobin, three kinds of active component of kasugarnycin mixes pesticide synergistic formula, and before Oryza sativa L. cut 5 ~ 7 days, full heading time perform twice at preventing and treating.Belong to pesticide science and use technical field.
Background technology
The Monitoring of Paddy Rice Plant Area of China accounts for the 1/3 of cereal crops, and the disease of hazard rice, worm, crop smothering kind are more, and many overlapping occurs.Rice field chemical pesticide is of a great variety, and spraying times increases to more than 10 times for 2-3 time suddenly from the rice field medication of per season in 20th century, and simultaneously insecticide-applying way is transformed into by original single pharmacy application and is used after scene, field bucket mixes by Multiple Pesticides preparation.But, the mixed existence randomness of bucket that field is on-the-spot, it is theoretically unsound, it is easy to problems with occurs: show as the superposition even antagonism of drug effect after (1) some medicament barrel is mixed, make drug effect reduce, cause that pesticide is excessively used；(2) after some medicament barrel mixes, making the original physicochemical property of pesticidal preparations change, after bucket is mixed compared with original unitary agent, preparation stability is deteriorated, it is easy to cause the generation of poisoning.
Rice blast is normal property, gas transmissibility Major Diseases on Oryza sativa L., occurs at Oryza sativa L. cut to neat fringe blooming stage, and owing to weather conditions are suitable for, Oryza sativa L. is easy to generation panicle blast.Particularly a run of wet weather, sunshine is not enough, time fine time rain, when sooner or later having cloud and mist and dew, state of an illness extension is rapidly.After catching an illness, originally forming water stain shape chlorisis scab, last blackening brown, panicle neck is downright bad, and plant is transported to the nutrient passage in fringe portion and is blocked, thus forming dead ears or flat grain, causes hollow kernels increase, mass of 1000 kernel to reduce, and the general underproduction 10% ~ 30% is even had no harvest time serious.In conjunction with the various factors of panicle blast disease occurrence injury, the preventing and treating of panicle blast disease is except selecting disease-resistant variety, seed disinfection, reinforcement field liquid manure management on producing, and outside growth promotion stalwartness is disease-resistant, medicament prevention and treatment are major measure.
False smut is one of Common Diseases of Oryza sativa L., main harm grain, forms blackish green or yellow powder ball, not only affects yield, the general underproduction 20% ~ 30%, more seriously pollutes Oryza glutinosa, endangers health of human body.False smut mainly occurs at heading flowering period, and weather conditions, field humidity, nitrogen application situation are very big on the impact of disease generation weight.Rice Heading blooming stage such as continuous rainfall weather, is beneficial to infecting and breeding of pathogenic bacteria, and disease is by generation weight.Field humidity is big, dew weight and the morning dew dry late when occur heavier.Applied nitrogen is excessive, excessively slow, and leaf growth is roomy and hangs down loosely, and field covers, and ventilation and penetrating light is poor, and rice strain carbon-nitrogen ratio is lacked of proper care, and resistance declines, it is easy to morbidity and degree increase the weight of.False smut preventing and treating is except selecting disease-resistant variety, seed disinfection, reinforcement field liquid manure management on producing, and outside growth promotion stalwartness is disease-resistant, medicament prevention and treatment are major measure.
Rice field booting non-phase to the cut phase, Oryza sativa L. rice blast, false smut overlap occur, and study the mixed pesticide synergistic formula of a kind of field bucket for Oryza sativa L. rice blast, false smut and spraying method thereof, the decrement of the raising and pesticide that are beneficial to pesticide efficacy are used.
As far as the applicant is aware, oxime bacterium Tebuconazole belongs to real wide spectrum systemic fungicide, most main plant pathogenic fungi are all effective, and biological activity is high, and preventive effect is good, and the lasting period is long, and effect stability；Outstanding system conductive, have excellent protection and therapeutic concurrently；Toxicity is low, it is low very friendly to user, consumer and environment to remain；Regulate the absorption of calcium, alleviate physiological disturbance.
Benzene first Fluoxastrobin belongs to wide spectrum methoxy acrylic bactericide, and almost all of mycota disease such as banded sclerotial blight, glume blight, false smut, rice blast etc. are respectively provided with good preventive effect, has sterilization protection double effects, and its bactericidal range is extremely wide.When being particularly well-suited to bad climate, the disease emergence period uses.Therapeutic effect is good, lasting period length and to crop safety, improve yield and quality.
Kasugarnycin is agricultural antibiotic, there is interior absorption, there is prevention and the effect for the treatment of, its therapeutic effect is more notable, kasugarnycin is sprayed on rice plant, the penetration of plant (Oryza sativa L.) is strong, Herb can be caused by the quickly interior suction of plant conduction, some Gram-positive internal and negative bacteria there is inhibitory action, its mechanism of action mainly disturbs the amino acid whose metabolism of thalline esterase system, significantly affect the synthesis of protein, become fertilizer after making in rice strain mycelia contact medicine and expand abnormity, stop growing, horizontal edge branch, cytoplasmic granule, thus playing the effect controlling Spot expansion and the appearance of new focus, this antibiotics is very strong to the therapeutical effect of rice blast fungus.
Summary of the invention
The goal of the invention that the present invention to realize is: overcome prior art Problems existing, it is provided that the mixed pesticide synergistic formula of a kind of field bucket for Oryza sativa L. rice blast, false smut and spraying method thereof, can strengthen drug effect, improve preventive effect, be conducive to pesticide reduction to use.
The technology of the present invention design is as follows: study through systematicness test, applicant filters out oxime bacterium Tebuconazole, benzene first Fluoxastrobin, three kinds of pesticidal preparations of kasugarnycin from Multiple Pesticides preparation, mix at scene, field bucket by a certain percentage, strengthen the drug effect to Oryza sativa L. rice blast, false smut；And from multiple dosage form, filter out the combination of each preparation formulation, it is ensured that the stability of preparation after bucket is mixed；On the basis of the studies above, applicant studies further from spraying method, it is ensured that the preparation excellent preventive effect to Oryza sativa L. rice blast, false smut after bucket is mixed.
For achieving the above object, technical scheme is as follows:
For the mixed pesticide synergistic formula of field bucket of Oryza sativa L. rice blast, false smut, three kinds of pesticidal preparations mix, it is characterized in that, the active component of described three kinds of pesticidal preparations respectively oxime bacterium Tebuconazole, benzene first Fluoxastrobin, kasugarnycin；After mixing, the weight of oxime bacterium Tebuconazole accounts for the 10-35% of described active component gross weight, and the weight of benzene first Fluoxastrobin accounts for the 10-35% of described active component gross weight, and the weight of kasugarnycin accounts for the 30-80% of described active component gross weight；Described active component gross weight is the weight sum of oxime bacterium Tebuconazole, benzene first Fluoxastrobin, kasugarnycin three.
The technical scheme that the present invention is perfect further is: active component is the pesticidal preparations dosage form of oxime bacterium Tebuconazole is water dispersible granules；Active component is the pesticidal preparations dosage form of benzene first Fluoxastrobin is suspending agent；Active component is the pesticidal preparations dosage form of kasugarnycin is water preparation.
Adopt above-mentioned dosage form combination can ensure the stability of the mixed rear preparation of bucket, thus avoiding poisoning.
Preferably, the weight of oxime bacterium Tebuconazole accounts for the 20-35% of described active component gross weight, and the weight of benzene first Fluoxastrobin accounts for the 10-35% of described active component gross weight, and the weight of kasugarnycin accounts for the 30-70% of described active component gross weight.
Preferably, the weight of oxime bacterium Tebuconazole accounts for the 20-35% of described active component gross weight, and the weight of benzene first Fluoxastrobin accounts for the 20-35% of described active component gross weight, and the weight of kasugarnycin accounts for the 30-60% of described active component gross weight.
Preferably, the weight of oxime bacterium Tebuconazole accounts for the 15-35% of described active component gross weight, and the weight of benzene first Fluoxastrobin accounts for the 20-35% of described active component gross weight, and the weight of kasugarnycin accounts for the 30-65% of described active component gross weight.
Preferably, the weight of oxime bacterium Tebuconazole accounts for the 25-35% of described active component gross weight, and the weight of benzene first Fluoxastrobin accounts for the 25-35% of described active component gross weight, and the weight of kasugarnycin accounts for the 30-50% of described active component gross weight.
Above-mentioned formula is suitable in the mixed use of field bucket, take full advantage of that oxime bacterium Tebuconazole, benzene first Fluoxastrobin be high to the prevention of false smut and therapeutic activity, the kasugarnycin complementary advantage to panicle blast lasting period length, can efficiently prevent and treat Oryza sativa L. rice blast, false smut, significantly improve prevention effect, overcome the defect of single agent activity difference；Decrease field rotating medicine number of times, dosage and drug cost, reduce the pesticide pollution to paddy environment.
Above-mentioned formula preventing and treating in 5 ~ 7 days and Oryza sativa L. full heading time before Oryza sativa L. cut prevent and treat twice preventing and treating, adopt the mode of spraying to spray in Oryza sativa L. middle and upper part, and the time that sprays controls before fine day 9 or after fine day 16, prevent preferably and treatment Oryza sativa L. rice blast, false smut.
Detailed description of the invention
Embodiment 1: the field control effectiveness test to Oryza sativa L. rice blast, false smut
75% oxime bacterium tebuconazole water dispersible granule is weighed in active ingredient ratio, 32.5% benzene first Fluoxastrobin suspending agent, totally 50 grams of 2% kasugarnycin powder, mix and be substantially dissolved in 1 kg water, the water stirring of 29 kilograms is added again after stirring, ultimately form prevention and the treatment Oryza sativa L. rice blast of 30 kilograms, the field bucket of false smut mixes medicinal liquid, in JIUYUE in 2014 3 days and JIUYUE 12 days in lotus throne village of Qiu Jiang office, Guichi District of Chizhou City, Anhui Province to susceptible Oryza sativa L. rice blast, the Taihu Lake of false smut is glutinous tests, comparison medicament is 75% oxime bacterium tebuconazole water dispersible granule, 32.5% benzene first Fluoxastrobin suspending agent, 2% kasugarnycin water preparation, before Oryza sativa L. cut during 5 ~ 7 days and Oryza sativa L. all neat fringes, adopt knapsack sprayer 16 methods later carrying out the spraying of full field in the afternoon, spray at Rice Panicle.Field adopts three times repeats, 15 days investigation panicle blast preventive effects after medicine, and 25 days investigation false smut preventive effects after medicine, result is in Table 1.
Table 1: the mixed result of the test table of field bucket of a kind of prevention and treatment Oryza sativa L. rice blast, false smut
Note: A is 75% oxime bacterium tebuconazole water dispersible granule；B is 32.5% benzene first Fluoxastrobin suspending agent；C is 2% kasugarnycin water preparation.The actual amount of its correspondence of A:B:C=20:10:70 is 10g:5ml:35ml, the actual amount of its correspondence of A:B:C=20:30:50 is 10g:15ml:25ml, the actual amount of its correspondence of A:B:C=25:25:50 is the actual amount of its correspondence of 12.5g:12.5ml:25ml, A:B:C=30:30:40 is 15g:15ml:20ml.
Investigation in 15 days and 25 days after medicine, field efficacy is it is shown that Oryza sativa L. rice blast, false smut are had excellent prevention and therapeutic effect by the mixed potentiation medicament of this field bucket, and preventive effect all reaches more than 86%, and prevention effect pole is significantly better than the effect of single product.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to replacement or the technical scheme of equivalent transformation formation, all fall within the protection domain of application claims.
Claims (5)
1. for the mixed pesticide synergistic compositions of the field bucket of Oryza sativa L. rice blast, false smut, three kinds of pesticidal preparations mix, it is characterized in that, the active component of described three kinds of pesticidal preparations respectively oxime bacterium Tebuconazole, benzene first Fluoxastrobin, kasugarnycin；The weight of oxime bacterium Tebuconazole accounts for the 15-35% of active component gross weight, and the weight of benzene first Fluoxastrobin accounts for the 20-35% of active component gross weight, and the weight of kasugarnycin accounts for the 30-65% of active component gross weight；Described active component gross weight is the weight sum of oxime bacterium Tebuconazole, benzene first Fluoxastrobin, kasugarnycin three.
2. according to claim 1 for the mixed pesticide synergistic compositions of the field bucket of Oryza sativa L. rice blast, false smut, it is characterized in that, active component is the pesticidal preparations dosage form of oxime bacterium Tebuconazole is water dispersible granules；Active component is the pesticidal preparations dosage form of benzene first Fluoxastrobin is suspending agent；Active component is the pesticidal preparations dosage form of kasugarnycin is water preparation.
3. according to claim 1 for the mixed pesticide synergistic compositions of the field bucket of Oryza sativa L. rice blast, false smut, it is characterized in that, the weight of oxime bacterium Tebuconazole accounts for the 20-35% of described active component gross weight, the weight of benzene first Fluoxastrobin accounts for the 20-35% of described active component gross weight, and the weight of kasugarnycin accounts for the 30-60% of described active component gross weight.
4. according to claim 1 for the mixed pesticide synergistic compositions of the field bucket of Oryza sativa L. rice blast, false smut, it is characterized in that, the weight of oxime bacterium Tebuconazole accounts for the 20-35% of described active component gross weight, the weight of benzene first Fluoxastrobin accounts for the 25-35% of described active component gross weight, and the weight of kasugarnycin accounts for the 30-50% of described active component gross weight.
5. it is used for preventing and treating the purposes of disease for the mixed pesticide synergistic compositions of the field bucket of Oryza sativa L. rice blast, false smut as claimed in claim 1.
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