CN107396933A - A kind of Pesticidal combination comprising cycolxylidin and Nylar - Google Patents

Abstract

The invention discloses a kind of Pesticidal combination comprising cycolxylidin and Nylar, the mass ratio of cycolxylidin and Nylar is 1 in the Pesticidal combination:30‑20:1, preferably 1:10‑10:1；The Pesticidal combination of the present invention can be prepared into any in missible oil, wettable powder, water dispersible granules, suspending agent, aqueous emulsion, microemulsion, preventing and treating of the Pesticidal combination of the present invention to various crop pests in the range of aforementioned proportion has obvious synergistic function, and be particularly suitable for use in preventing and treating planthopper, aphid, thrips, aleyrodid, bollworm.

Description

A kind of Pesticidal combination comprising cycolxylidin and Nylar

Technical field

The present invention relates to a kind of Pesticidal combination and its application, more particularly to one kind to include cycolxylidin and Nylar Pesticidal combination and its application for preventing and treating crop pests.

Background technology

In agricultural production, breeding amount is big, the obvious insect of generation overlap, such as plant hopper, aleyrodid, the production of aphid pest resistance Raw element it is very fast, and developing new varieties of pesticides has the shortcomings that input is big, the cycle is long, and therefore, new varieties of pesticides development rate is remote The remote resistance development speed for not catching up with insect.And agriculture chemical compounding has construction cycle short advantage, the particularly mechanism of action different Pesticide species compounded, can also often delay the development of pest resistance to insecticide, so as to extend the use of pesticide activity component Life-span, therefore, research and development agriculture chemical compounding pesticide species are particularly efficient, low toxicity, the pesticide species of environmental protection to agricultural chemicals sustainable development Have great importance.

Cycolxylidin is the new varieties of Wuhan Engineering Univ's initiative, available for homoptera pest etc. on preventing and treating crops, Show through field control effectiveness test, it has preferable pest controling effect, and its structure is as follows：

。

Nylar is a kind of chitin synthesis inhibitor of juvenile hormone type, has strong ovicidal action, also has Absorbability transfer activity, it can influence to be hidden in the larva of blade behind.The inhibitory action of insect, which is shown, which influences insect, sloughs off Become and breed, according to relevant document report, Nylar has efficiently, and to crop and ring to Homoptera, Thysanoptera, Diptera pest Border safety.However, in the Nylar product that China is registered at present, the overwhelming majority belongs to hygienic insecticide, is mainly used in preventing and treating Mosquito, fly, blattaria etc., the application on crops are considerably less.

Either cycolxylidin and Nylar, drug cost is high during single use, limits its popularization to a certain extent Using, and long-term single use will cause being continuously increased for pest resistance degree, the mixture of different pesticide species, be preventing and treating agriculture The common methods of industry insect, by the way that different pesticide activity components are compounded, rational formula is filtered out, reality can be effectively improved Border prevention effect, dosage is reduced, cost is reduced, delays the generation of pest resistance to insecticide.Present inventor is by substantial amounts of Toxicity screens and field control effectiveness test, is found surprisingly that after cycolxylidin and pyriproxyfen compound, in certain scope Preventing and treating to various agricultural insect shows obvious synergistic function, and there is no be related to cycolxylidin and Nylar at present The relevant report compounded.

The content of the invention

It is an object of the invention to for above-mentioned the deficiencies in the prior art, there is provided a kind of prevention effect is good, toxicity is low, can be with The Pesticidal combination of homoptera pest and lepidoptera pest is effectively prevented and treated, is not simple between the Pesticidal combination active component Addition, but there is synergistic function between each other.

Another object of the present invention is to provide the application of the Pesticidal combination, the Pesticidal combination can be used for preventing Control vegetables, cotton, fruit tree, the Homoptera of cereal crop and lepidoptera pest, particularly for preventing and treating planthopper, aphid, thrips, Aleyrodid, bollworm.

To reach above-mentioned purpose, the present invention adopts the following technical scheme that：

A kind of Pesticidal combination, its active component mainly include cycolxylidin and Nylar, and the Pesticidal combination also includes Appropriate surfactant and/or carrier.

Preferably, cycolxylidin and the weight of Nylar ratio are 1 in the Pesticidal combination:30-20:1.

Preferably, cycolxylidin and the weight of Nylar ratio are preferably 1 in the Pesticidal combination:10-10：1.

Preferably, the weight percentage of composition shared by active component is 5-80% in the Pesticidal combination, is preferably 12-60%, remaining is surfactant and/or carrier conventional in Pesticide formulation.

Preferably, the surfactant can be emulsifying agent, dispersant, wetting agent, stabilizer, defoamer, thickener In one or more.

Preferably, Pesticidal combination of the invention is prepared into suitable agricultural production by known method and auxiliary element Any one formulation used, including but not limited to missible oil, wettable powder, water dispersible granules, suspending agent, aqueous emulsion, micro emulsion Any one of agent etc..

Preferably, Pesticidal combination of the invention can also include other agricultural active compositions, including but not limited to other kinds Insecticide, bactericide, herbicide, plant growth regulator, the fertilizer of class.

Preferably, composition pesticide of the invention can be provided in the form of finished product preparation, i.e. active component in composition By evenly mixing, it can also be provided with unit dose form, directly be mixed in proportion in bucket or tank using preceding, then diluted To required concentration.

A kind of method prevented or control agricultural pests, including the Pesticidal combination containing cycolxylidin and Nylar is existed Plant or its propagating materials use by target pest infringement before and/or after.

Compared with prior art, Pesticidal combination of the invention has the beneficial effect that：

（1）Active component interaction is not simple addition in the Pesticidal combination of the present invention, one after both compoundings Preventing and treating in fixed scope to various agricultural insect shows obvious synergistic function；

（2）The active component mechanism of action is different in the Pesticidal combination of the present invention, and both can delay the anti-medicine of insect at compounding The occurrence and development of property；

（3）Pesticidal combination dosage of the invention is low, prevention effect is good, and Environmental compatibility is high.

Embodiment

In order to be better understood from the essence of the present invention, technical scheme is made specifically with reference to embodiment It is bright, but present disclosure is not limited thereto, it is impossible to therefore understands that be the limitation to the scope of the claims of the present invention, guarantor of the invention Shield scope is defined by the restriction of claim.

First, toxicity determines

1st, reagent agent：Brown plant-hopper（Nilaparvata lugens Stal）Nymph

2nd, test method：Using rice-stem dipping method, take the rice strain of the booting mid-term of healthy and strong suppression, clean, be cut into 15 cm length Even root rice stem, shines to surface without washmarking in shady place, standby.According to then result of the test, cycolxylidin and Nylar are prepared Into different concentration, using clear water as control, the rice stem got ready is respectively placed in the decoction of various concentrations and impregnates 30s, after taking-up Slightly dry, root is encased with the rayon balls soaked with clear water, is put into test tube, 3 consistent age nymphs of criteria for selection, be put into examination Guan Zhong, 20 are placed per test tube, supplies 20 after rejecting the individual of mechanical damage, upper end is sealed with wet gauze, each concentration weight It is multiple 3 times, totally 60.Connect the test tube after worm to be put into the insectary that temperature is 26 DEG C, relative humidity is 70%, checked after 48 h dead Borer population, the death rate is calculated, and be corrected with the death rate of control, then obtain lethal concentration of 50 LC with niqueMin analytic approach₅₀。

Co-toxicity coefficient CTC is calculated according to the abundant methods of Sun Yun, result of the test is as shown in table 1：

Table 1 can be seen that cycolxylidin and Nylar to the mixed ratio of rice hoppers 1:30-20:When 1, co-toxicity coefficient More than 120, synergistic function is shown；Wherein, when both compound proportions are 1:20-10:When 1, co-toxicity coefficient exists More than 150, synergistic effect is relative to be become apparent from.

2nd, example of formulations

1st, embodiment 1:21.6% cycolxylidin Nylar wettable powder（5：1）

Cycolxylidin 18%

Nylar 3.6%

Alkylaryl APEO 3%

Neopelex 4%

Dispersant NNO 3%

Kaolin surplus

The preparation method of the wettable powder is：The preparation method of the wettable powder is：By formula by each component it is dry, Cool down, be levigate, you can wettable powder of the present invention is made.

2nd, embodiment 2:36% cycolxylidin Nylar suspending agent（1:1）

Cycolxylidin 18%

Nylar 18%

AEO 4%

EO-PO block polyethers 4%

Aluminium-magnesium silicate 1.8%

Organic silicone 1.2%

Sodium benzoate 0.6%

Ethylene glycol 4%

Deionized water surplus

The preparation method of the suspending agent is：First other auxiliary agents are well mixed, are well mixed through high speed shear, add effectively into Divide cycolxylidin and Nylar, abrading-ball more than 3 hours in ball crusher so that preparation particle diameter is below 5 microns, you can be made Suspending agent of the present invention.

3rd, embodiment 3:24% cycolxylidin Nylar water dispersible granules（1:5）

Cycolxylidin 4%

Nylar 20%

Sodium lignin sulfonate 4%

Neopelex 4%

Ammonium sulfate 3%

Sodium alginate 2%

Bentonite surplus

The preparation method of the water dispersible granules is：By above-mentioned formula by cycolxylidin, Nylar and dispersant, wetting agent, collapse Solution agent and filler are well mixed, and are crushed with micro jet, through mediating, are then added fluidized-bed granulation dryer and are carried out Through sampling analysis after granulation, dry, screening, you can water dispersible granules of the present invention are made.

4th, embodiment 4:12.1% cycolxylidin Nylar missible oil（9:1）

Cycolxylidin 9.9%

Nylar 2.2%

Agriculture breast 2201# 8%

1-METHYLPYRROLIDONE 10%

Organic silicone 2%

Dimethylbenzene surplus

The preparation method of the missible oil is：Cycolxylidin, Nylar and solvent, emulsifying agent are mixed by above-mentioned formula, It is agitated uniformly to can be prepared by missible oil of the present invention.

3rd, field control effectiveness test

1st, controlling object：Rice hoppers

2nd, test method：Pesticidal preparations using 1-4 of the embodiment of the present invention are test medicine, with 25% cycolxylidin wettable powder Agent and 5% Nylar aqueous emulsion are comparison medicament.

Experimental field it is arranged on Guangdong Province Huadu District rice terrace, season is broken out for planthopper during dispenser, using the type of bodyguard's board 16 Hand sprayer is sprayed, and spraying is to be sprayed on rice middle and lower part with thick mist direct-injection head.Before dispenser Tanaka pour water 3-5 cm depth, ensure 7 It is not discharged, and allows it to fall naturally dry.

Using the point sampling of diagonal 3, each cell investigates 3 plants, and every 3 root and stem of certain plants of investigation are for 9 root and stem of certain plants of investigation.Experiment is for investigation 3 It is secondary, i.e., planthopper radix is investigated before dispenser, field planthopper work worm amount is investigated within 7,14 days after medicine, calculates each Revision insect recluced rate And Rectifying efficacies, result of the test are as shown in table 2：

As shown in Table 2, control single dose, and holding effect are better than to the prevention effect of rice hoppers after cycolxylidin and pyriproxyfen compound Property is considerably better than comparison medicament, shows that the preventing and treating after cycolxylidin and pyriproxyfen compound to rice hoppers shows as Synergistic Effect, and in scope of medication, the complex composition of cycolxylidin and Nylar does not find there is disease generation, table to rice crop Bright composition pesticide security of the invention is also preferable.

It is pointed out that the foregoing is only to explain the preferred embodiments of the invention, it is not intended to according to this to this Any formal limitation is made in invention, therefore, all any modifications or change for the present invention made under the spirit of the present invention More, should be included in the scope of the protection.

Claims (8)

1. a kind of Pesticidal combination, it is characterised in that its active component mainly includes cycolxylidin and Nylar.

2. Pesticidal combination according to claim 1, it is characterised in that the mass ratio of the cycolxylidin and Nylar is 1:30-20:1。

3. Pesticidal combination according to claim 2, it is characterised in that the mass ratio of the cycolxylidin and Nylar is 1:10-10：1.

4. according to the Pesticidal combination described in any one of claim 1-3 claim, it is characterised in that the Insecticidal combinations The formulation of thing is any in missible oil, wettable powder, water dispersible granules, suspending agent, aqueous emulsion, microemulsion.

5. Pesticidal combination according to claim 4, it is characterised in that the Pesticidal combination can also include other agricultural Active component.

6. the Pesticidal combination according to any one of claim 1-5 claim is used for the use for preventing and treating crop pests On the way.

7. purposes according to claim 6, it is characterised in that the crop pests are preferably Homoptera and Lepidoptera evil Worm.

8. purposes according to claim 7, it is characterised in that the crop pests are preferably planthopper, aphid, Ji Horse, aleyrodid, bollworm.