The Pesticidal combination of a kind of indoxacarb and betacyfluthrin
Technical field
The Pesticidal combination that the present invention relates to is with indoxacarb and betacyfluthrin for active ingredient, for preventing and treating crops Lepidoptera class pest.
Background technology
The resistance problem of pest is global problems, is the emphasis problem that agricultural science and technology worker pays close attention to always.Along with the continuity year in year out of Chemical Control of Harmful Insects, the increase of Pesticide use amount and not scientifical use agricultural chemicals, pest resistance is day by day serious, and the pest species producing resistance is on the increase.Particularly endanger serious Lepidoptera class pest to agricultural production, resistance level is higher, and resistance development speed is relatively very fast.Meanwhile, the use agricultural chemicals of high strength, causes Practice for Pesticide Residue in Agricultural Products to exceed standard, environmental pollution and the increase of peasant's drug cost etc., is unfavorable for agricultural sustainable development.Therefore, the pesticide of efficient, the low toxicity of research and development, environmental protection has positive effect to agricultural sustainable development.
Indoxacarb (indoxacarb); chemical name: 7-chloro-2,3,4a; 5-tetrahydrochysene-2-[methoxycarbonyl (4-Trifluoromethoxyphen-l) carbamoyl] indeno [1; 2-e] [1,3,4-] oxadiazines-4a-carboxylate methyl ester; belong to oxadiazines class broad spectrum pesticide; be with sodium channel for main target, neuron nAchRs and GABA acceptor etc. are had to the novel green agricultural chemicals of multiple action, there is the features such as efficient, high selectivity, low-residual.With other insecticides without cross resistance.Effectively can prevent and treat grain, cotton, various pests really, on the crop such as vegetables.
Betacyfluthrin (beta-cyfluthrin), chemical name: cyano group-(4-fluoro-3-benzyloxy phenoxy base)-methyl-(2,2-dichloroethylene)-2,2-dimethyl cyclopropane carboxylic acid's esters are pyrethroid insecticideses of a kind of synthesis, this medicine is to the very effective a kind of broad spectrum pesticide of public health insect, insecticidal activity is high, belongs to never poison, to tag and stomach poison function, and have certain avoidance effect, without interior suction and fumigation action.There is the advantages such as the speed of knocking down is fast, power of knocking down is strong, dosage is few.Quick-acting, the lasting period is grown, the drip washing of ability rainwater.Pathophorous vector pests and the various sanitary insect pest of control can be eliminated.For preventing and treating the insects such as Lepidoptera, diptera, Homoptera and mite class.
In the real process of agricultural production, the problem that pest control the most easily produces is the generation of pest resistance to insecticide.Agriculturally important insect is as lepidoptera pest because its breeding cycle is short, and breeding amount is large, and mobility is little, and selfing degree is high, especially easily produces resistance.
Different cultivars composition carries out composite, is to prevent and treat the very common method of resistant insect.Heterogeneity is carried out composite, according to practical application effect, judge certain composite be synergy, add and or antagonism.Through inventor's research, find indoxacarb and betacyfluthrin is composite according to a certain ratio after have synergistic effect, and about indoxacarb and the composite relevant report of betacyfluthrin not yet open.
Summary of the invention
The object of the present invention is to provide a kind of efficient, low toxicity and the lasting period long, effectively can prevent and treat crops Lepidoptera class pest, be conducive to the indoxacarb of integrated pest management and the Pesticidal combination of betacyfluthrin.
The technical solution adopted in the present invention is: the Pesticidal combination of a kind of indoxacarb and betacyfluthrin, comprise usual auxiliaries, indoxacarb and betacyfluthrin, indoxacarb and betacyfluthrin ratio of weight and number is in the composition 10:1-1:10, and indoxacarb and the percentage by weight of betacyfluthrin weight summation in composition pesticide are 2-60%.
Indoxacarb and the weight preferred percent of betacyfluthrin weight summation in composition pesticide are 5-30%.
Described Pesticidal combination according to well known to a person skilled in the art method, can be configured to the application forms of the applicable agricultural uses such as missible oil, microemulsion, aqueous emulsion, suspending agent, wetting powder or water dispersible granules.
Described Pesticidal combination is also containing the usual auxiliaries of preparation needed for pesticidal preparations, usual auxiliaries is the mixing of one or more in solvent, emulsifier, wetting agent, stabilizing agent, dispersant, thickener, pH adjusting agent, defoamer, antifreezing agent, packing agent etc., be known substance, various auxiliary agents conventional in pesticidal preparations, can change to some extent according to different situations, be not particularly limited.
Described Pesticidal combination, for preventing and treating crops Lepidoptera class pest.
Pesticidal combination provided by the invention, usually adopts the method for spraying to use, also can adopt other operation techniques agriculturally applied as required.
Pesticidal combination provided by the invention has following beneficial effect.
1, Pesticidal combination provided by the invention, shows obvious synergistic effect in certain ratio range, and the control efficiency of composition is significantly improved than single dose, reduces the using dosage of agricultural chemicals, decreases the impact of agricultural chemicals on environment, reduces drug cost.
2, the active ingredient mechanism of action of Pesticidal combination provided by the invention is different, and the application of composition can delay or overcome the generation of disease drug resistance, extends the service life of medicament, is conducive to the comprehensive regulation of insect.
Embodiment
In order to understand essence of the present invention better, below in conjunction with embodiment, content of the present invention is described in further detail, content mentioned in embodiment is not limitation of the invention, and in preparation method, the selection of the process conditions such as temperature, time can be suited measures to local conditions and there is no substantial effect to result.Embodiment each component proportioning is all weight percentage.
Embodiment 1: synergy mensuration is carried out to diamond-back moth.
Examination insect is supplied to be diamond-back moth 2-3 instar larvae; Test method reference People's Republic of China (PRC) agricultural industry criteria NY/T1154.2-2006, stomach poison activity test clamp poison blade method.The co-toxicity coefficient (CTC) >=120 of built agent shows as synergistic effect; CTC ﹤ 80 shows as antagonism; CTC ﹤ 80 ﹤ 120 shows as summation action.
Table 1: indoxacarb betacyfluthrin is to the toxicity test result of diamond-back moth.
As can be seen from result of the test table 1, indoxacarb and betacyfluthrin are 10:1-1:10(weight ratio at mixed ratio) between, all synergistic effect is shown as to diamond-back moth.
Embodiment 2:12% indoxacarb betacyfluthrin suspending agent.
Indoxacarb 10%, betacyfluthrin 2%, emulsifier 1601# 10%, wetting agent LS, dispersant SOPA-270 3%, bentonite 2%, xanthans 0.2%, silicone defoaming agent 0.5%, glycerine 5%, surplus is deionized water.Above-mentioned formula is pulverized in proportion in advance, then adds in sand mill and grind, the obtained 12% indoxacarb betacyfluthrin suspending agent of allotment after high shear mixing.
Table 2:12% indoxacarb betacyfluthrin suspending agent is watered spraying control diamond-back moth result of the test.
As can be seen from Table 2, the present invention 12% indoxacarb betacyfluthrin suspending agent control diamond-back moth drug effect is excellent, 12% indoxacarb betacyfluthrin suspending agent than 15% indoxacarb suspending agent and 5% betacyfluthrin suspending agent effective, illustrate that 12% indoxacarb betacyfluthrin suspending agent can prevent and treat diamond-back moth preferably, improve preventive effect, reduce Pesticide use amount, reduce cost and the pollution to environment.
Embodiment 3:8% indoxacarb betacyfluthrin missible oil.
Indoxacarb 5%, betacyfluthrin 3%, the APEO 4% of nonionic, epoxidized soybean oil 2%, p-aminobenzoic acid 0.5%, emulsifier 1601# 10%, emulsifier 500# 5%, surplus is ethanol and dimethylbenzene.Above-mentioned formula is added in mixing kettle in proportion successively, after stirring, namely obtains 8% indoxacarb betacyfluthrin missible oil.
Table 3:8% indoxacarb betacyfluthrin missible oil is watered spraying control cotton bollworm result of the test.
As can be seen from Table 3, the present invention 8% indoxacarb betacyfluthrin EC cotton bollworm drug effect is excellent, 8% indoxacarb betacyfluthrin missible oil than 150g/L indoxacarb missible oil and 5% betacyfluthrin missible oil effective.Illustrate that 8% indoxacarb betacyfluthrin missible oil can prevent and treat cotton bollworm preferably, improve preventive effect, reduce Pesticide use amount, reduce cost and the pollution to environment.