Background technology
The rice leaf roller (Cnaphalocrocis medinalis Guenee) and the snout moth's larva of rice (comprising striped rice borer, paddy stem borer and pink rice borer) are the primary pests in the Rice Production, generally can cause 2~3 one-tenth of the underproduction, can reach 5 one-tenth when serious more than.Especially in recent years owing to reasons such as climatic variation, pattern of farming changes, take place and cause harm particularly serious.The main medicament of preventing and treating above-mentioned insect for a long time is desinsection list, Hostathion, chlopyrifos, fluorine worm nitrile etc., wherein desinsection list (two) belongs to the bio-imitability low toxic pesticide, but its to 2 ages above rice leaf roller control efficiency relatively poor, and use because of long-term, rice leaf roller, striped rice borer and paddy stem borer have all produced tangible resistance to desinsection list (two), and control efficiency significantly descends.In recent years, especially under the situation that rice leaf roller breaks out on a large scale, existing single control medicaments such as desinsection list, Hostathion, chlopyrifos, fluorine worm nitrile, Avermectin all fail to control effectively causing harm of the rice leaf roller and the snout moth's larva of rice, produce to paddy rice and bring heavy losses.
The chemical name of metaflumizone is (E+Z)-2-[2-(4-cyano group benzene)-1-(3-trifluoromethylbenzene) ethylidene]-N-(4-trifluomethoxybenzene) hydrazine carbonyl oxamides, be a kind of novel pesticide of developing jointly by BASF Aktiengesellschaft and Japanese agricultural chemicals company.It is a kind of insecticide with brand-new mechanism of action, gets food by insect and enters in its body and stomach toxicity to take place kill off the insect pests, and action of contace poison is less, no systemic action.This medicine all has the better prevention effect for the target pest in each length of time, this medicine enters polypide behind the insect's food-taking, by the sodium-ion channel on the mechanism of action blocking-up insect neuron axon film of uniqueness, make sodium ion can not pass through axolemma, and then suppress nerve impulse and make excessive the loosening of polypide, paralysis is behind the several hrs, insect promptly stops to get food, and is dead in 1~3d.Metaflumizone has tangible control efficiency to Lepidoptera and coleoptera, there are rice leaf roller, rice-stem borer, beet armyworm, cotton bollworm, pink bollworm, imported cabbageworm, tomato moth, diamond-back moth, Hellula undalis, black cutworm, potato leaf first-class as common, it can prevent and treat all vegetative stages of Lepidoptera and coleoptera larvae widely, has characteristics such as dosage is low, stability and high efficiency.Most of paddy fields in China, the rice leaf roller and the snout moth's larva of rice (striped rice borer, paddy stem borer and pink rice borer etc.) usually take place the same period, cause serious compound causing harm.Though metaflumizone is mainly brought into play stomach poison function to insect, the lasting period is long, because action of contace poison is less, and no systemic action, desinsection speed is relatively slow.
Chlopyrifos is the fast-acting insecticide of a kind of common employing of China's paddy fields, has the infiltration insecticidal action, it is the main medicament of the current control snout moth's larva of rice, but its lasting period is shorter, and relatively low to the insecticidal activity of rice leaf roller above larva in 2 age, thereby the rice leaf roller control efficiency that the single agent of chlopyrifos mixes the length of time to the field is relatively poor.
Summary of the invention
The present invention seeks to, though it is long at the metaflumizone list agent lasting period, but its desinsection speed is slower, can not control rapidly and cause harm, though and single its desinsection speed of agent of chlopyrifos is fast but deficiency that the lasting period is short by network analysis, utilizes both in the advantage of killing on the target pest separately, by complementation, the synergistic effect that scientific and reasonable compounded technology produces, propose that a kind of insecticidal spectrum is wide, synergy obviously, cost is lower, especially to rice leaf roller and the specific Recompounded pesticide new varieties of the snout moth's larva of rice.
The object of the invention is achieved by the following technical programs:
A kind of metaflumizone and chlorpyrifos mixture insecticide, the component of this insecticide and the weight percent content of each component are:
Metaflumizone 0.5-10%,
Chlopyrifos 20-40%,
Emulsifier 8-15%,
Cosolvent 5-15%,
Antifreezing agent 1-5%,
Stabilizing agent 0.3-8%,
Synergist 0.2-4%,
Solvent 20-60%,
PH value conditioning agent 0.1-0.3%, pH value 3-7.
The optimization formula of described compounded pesticides is: 1.0 kilograms of metaflumizones, 30.0 kilograms of chlopyrifos, 220114.7 kilograms of farming breasts, 9.1 kilograms of ethanol, 3.0 kilograms of propane diols, 2.0 kilograms of glycerine, 0.6 kilogram of xanthan gum, 0.6 kilogram of CMC, 2.0 kilograms of Butacides, C
920.0 kilograms in aromatic hydrocarbons, C
1016.7 kilograms in aromatic hydrocarbons, 0.2 kilogram of acetic acid, 0.1 kilogram of hydrochloric acid, the pH value is 3.
Described emulsifier is any one or any two kinds mixture that is selected from the farming breast 2201,650,0201,3208 and 0204.
Described cosolvent is any one or any two kinds mixture that is selected from ethanol, methyl alcohol, isoamyl alcohol, dimethyl formamide, hexanone and the acetone.
Described antifreezing agent is any one or any two kinds mixture that is selected from ethylene glycol, propane diols, glycerine and the urea.
Described stabilizing agent is to be any one or any two kinds mixture that is selected from xanthan gum, CMC, Sodium Polyacrylate and the aluminium-magnesium silicate.
Described synergist is any one or any two kinds mixture that is selected from Butacide, Piprotal, the sulfoxide.
Described solvent is to be selected from dimethylbenzene, toluene, C
9Aromatic hydrocarbons, C
10In aromatic hydrocarbons, ethanol, methyl alcohol and the acetone any one or any two kinds mixture.
Described pH regulator agent is any one or any two kinds mixture that is selected from acetic acid, hydrochloric acid, sodium hydroxide and the potassium hydroxide.
The preparation of metaflumizone and chlorpyrifos mixture cream pesticide is, earlier with in former medicinal cosolvent dissolving and the input modulation kettle, have high input again behind the partial solvent under agitation, drop into emulsifier, stabilizing agent, synergist, antifreezing agent and remaining solvent successively, regulate the pH value, stir to 3-7, analyze, filter, packing promptly gets the compounded cream agent.
Above-mentioned metaflumizone and chlorpyrifos mixture insecticide also can be processed into other formulations such as soluble liquid, microemulsion according to a conventional method except that emulsifiable concentrate.
The invention has the advantages that:
(1) metaflumizone and chlopyrifos are mixed according to the above ratio, when keeping the advantage of single agent own, synergistic function is obvious, the complex preparation co-toxicity coefficient can reach more than 170, better than metaflumizone list agent quick-acting, longer than the single agent lasting effect of chlopyrifos, the insecticidal activity of rice leaf roller, pink rice borer, striped rice borer is obviously strengthened;
(2) this composite product was especially in recent years, and most of agricultural chemicals having been produced has drug-fast rice leaf roller and striped rice borer, and this product still has the control efficiency more than 90%;
(3) utilize two kinds of agricultural chemicals that the different mode of action of insect, the mechanism of action reasonably are mixed, both prolonged the service life of agricultural chemicals, delayed the generation of pest resistance to insecticide again;
(4) above-mentioned mixture reasonable mixture ratio is compared with the agent of metaflumizone list, and its agricultural chemicals use cost descends more than 30%;
(5) this composite dose of insecticidal spectrum is wide, effective drug duration prolongs, a dispenser can prevent and treat various pests simultaneously, thereby can effectively avoid repeatedly using agricultural chemicals, significantly reduce the injected volume of agricultural chemicals to environment, therefore compounded pesticides of the present invention meets the requirement that present pollution-less agriculture is produced, and application prospect is comparatively wide.
Embodiment
The present invention is described in further detail by following examples, but should be appreciated that the present invention is not limited by these contents.
In each of the embodiments described below:
The former medicine of 98% metaflumizone: available from Basf China Co., Ltd;
The former medicine of 98% chlopyrifos: available from Zhejiang Xinnong Chemical Co.,Ltd.
Embodiment 1:(metaflumizone, chlorpyrifos mixture missible oil product one)
Take by weighing 10.0 kilograms of metaflumizones respectively, 20.0 kilograms of chlopyrifos, 0,201 4.0 kilogram of farming breast, 0,204 4.2 kilogram of farming breast, 2.4 kilograms of isoamyl alcohol, 4.8 kilograms of dimethyl formamides, 2.5 kilograms of glycerine, Sodium Polyacrylate, 3.7 kilograms, 4.2 kilograms of aluminium-magnesium silicates, 0.7 kilogram of sulfoxide, 0.5 kilogram of Piprotal, 30.0 kilograms of dimethylbenzene, 12.9 kilograms in C10 aromatic hydrocarbons, 0.1 kilogram in sodium hydroxide; With in former medicinal cosolvent dissolving of powdery and the input modulation kettle, under agitation, drop into emulsifier, stabilizing agent, synergist, antifreezing agent and remaining solvent successively behind the partial solvent that has high input again earlier, regulate pH value to 5.1, stir, analyze, filter, packing promptly gets the compounded cream agent.
Embodiment 2:(metaflumizone, chlorpyrifos mixture missible oil product two)
Its prescription is: 8.0 kilograms of metaflumizones, 40.0 kilograms of chlopyrifos, 3,208 6.0 kilograms of farming breasts, 650 2.0 kilograms of farming breasts, 14.8 kilograms of dimethyl formamides, 4.0 kilograms in urea, 4.2 kilograms of aluminium-magnesium silicates, 0.5 kilogram of Piprotal, 10.0 kilograms of dimethylbenzene, 10.3 kilograms of toluene, 0.2 kilogram of hydrochloric acid; Adjust pH to 3.4; All the other preparation methods are with embodiment 1.
Embodiment 3:(metaflumizone, chlorpyrifos mixture missible oil product three)
Its prescription is: 4.0 kilograms of metaflumizones, 40.0 kilograms of chlopyrifos, 0,204 10.0 kilogram of farming breast, 2.0 kilograms of methyl alcohol, 3.0 kilograms of isoamyl alcohol, 2.0 kilograms of propane diols, 1.0 kilograms in urea, 3.0 kilograms of CMCs, 0.1 kilogram of Piprotal, 0.1 kilogram of sulfoxide, C
926.6 kilograms in aromatic hydrocarbons, C
108.0 kilograms in aromatic hydrocarbons, 0.2 kilogram of hydrochloric acid; Adjust pH to 4.1; All the other preparation methods are with embodiment 1.
Embodiment 4:(metaflumizone, chlorpyrifos mixture missible oil product four)
Its prescription is: 1.8 kilograms of metaflumizones, 36.0 kilograms of chlopyrifos, 0,201 15.0 kilogram of farming breast, 7.0 kilograms of isoamyl alcohol, 1.1 kilograms of glycerine, 3.9 kilograms of Sodium Polyacrylates, 3.1 kilograms of sulfoxides, 12.0 kilograms in acetone, 19.8 kilograms of dimethylbenzene, 0.3 kilogram in potassium hydroxide; Adjust pH to 6.9; All the other preparation methods are with embodiment 1.
Embodiment 5:(metaflumizone, chlorpyrifos mixture missible oil product five)
Its prescription is: 1.0 kilograms of metaflumizones, 30.0 kilograms of chlopyrifos, 2,201 14.7 kilograms of farming breasts, 9.1 kilograms of ethanol, 3.0 kilograms of propane diols, 2.0 kilograms of glycerine, 0.6 kilogram of xanthan gum, 0.6 kilogram of CMC, 2.0 kilograms of Butacides, C
920.0 kilograms in aromatic hydrocarbons, C
1016.7 kilograms in aromatic hydrocarbons, 0.2 kilogram of acetic acid, 0.1 kilogram of hydrochloric acid; Adjust pH to 3; All the other preparation methods are with embodiment 1.
Embodiment 6:(metaflumizone, chlorpyrifos mixture missible oil product six)
Its prescription is: 0.8 kilogram of metaflumizone, 32.0 kilograms of chlopyrifos, 3,208 6.0 kilograms of farming breasts, 2.2 kilograms in acetone, 6.5 kilograms of methyl alcohol, 3.0 kilograms of ethylene glycol, 4.0 kilograms of xanthan gums, 1.0 kilograms of CMCs, 1.3 kilograms of Butacides, 43.0 kilograms of dimethylbenzene, 0.2 kilogram in sodium hydroxide; Adjust pH to 6.2; All the other preparation methods are with embodiment 1.
Embodiment 7:(metaflumizone, chlorpyrifos mixture missible oil product seven)
Its prescription is: 0.5 kilogram of metaflumizone, 25.0 kilograms of chlopyrifos, 2,201 8.0 kilograms of farming breasts, 5.0 kilograms of ethanol, 1.0 kilograms of ethylene glycol, 1.0 kilograms of glycerine, 0.2 kilogram of xanthan gum, 0.1 kilogram of CMC, 2.0 kilograms of Butacides, 43.1 kilograms in C9 aromatic hydrocarbons, 14.0 kilograms in C10 aromatic hydrocarbons, 0.1 kilogram in sodium hydroxide; Adjust pH to 4.8; All the other preparation methods are with embodiment 1.
Through indoor bioassay, metaflumizone and the chlorpyrifos mixture insecticidal emulsifiable concentrate of containing provided by the present invention has good synergistic effect to the insecticidal activity of rice leaf roller.
Table 1 metaflumizone and the agent of chlorpyrifos mixture insecticidal emulsifiable concentrate are to the synergistic effect to rice leaf roller
The medicament title |
LC
50(mg/L)
|
Proportioning |
Co-toxicity coefficient (CTC) |
Metaflumizone |
18.52 |
/ |
|
Chlopyrifos |
9.96 |
/ |
|
Embodiment 1 |
9.22 |
Cyanogen: poison=1: 2 |
176.5 |
Embodiment 2 |
9.31 |
Cyanogen: poison=1: 5 |
174.6 |
Embodiment 3 |
6.67 |
Cyanogen: poison=1: 10 |
223.2 |
Embodiment 4 |
6.65 |
Cyanogen: poison=1: 20 |
265.7 |
Embodiment 5 |
5.58 |
Cyanogen: poison=1: 30 |
283.6 |
Embodiment 6 |
6.34 |
Cyanogen: poison=1: 40 |
238.3 |
Embodiment 7 |
8.03 |
Cyanogen: poison=1: 50 |
198.9 |
As can be seen from Table 1, metaflumizone and chlopyrifos can be worked in coordination with well and be played a role, and make insecticidal effect be far longer than independent use metaflumizone or chlorpyrifos pesticide.
Test serves as the examination worm with rice leaf roller 3 instar larvaes (field collection), and biological activity determination is an infusion process.Contrast medicament 48% chlorpyrifos ec (EC), 24% metaflumizone suspending agent (SC); Each medicament is diluted to 6 concentration for examination with running water geometric ratio form.Get third-instar larvae and flood after 5 seconds to take out in reagent agent and put into the culture dish that is placed with fresh rice straw, each concentration repeats 3 times, each 20.28 ℃ of cultivation temperature, relative moisture 90%.Handle check result after 24 hours.Check result is utilized software SPSS platform, adopts dosage logarithm-dead probability value curve method to calculate and tries to achieve corresponding LC
50Value, (Co-toxicity coefficient CTC) contains the synergy situation of metaflumizone and chlorpyrifos ec with judgement to calculate co-toxicity coefficient with Sun Yunpei (Yun-peisun) method again.
Test routine 1:(metaflumizone and chlorpyrifos ec field control effectiveness test) to rice leaf roller
Test period: in July, 2008
Test site: Zhejiang Hangzhou
Subjects: rice leaf roller
Test medicine: 31% metaflumizone. chlorpyrifos ec (product five)
Application method: complete stool spraying
Contrast medicament: 48% chlorpyrifos ec (Xianju Pesticide Factory, Zhejiang Prov.); 24% metaflumizone suspending agent (BASF Aktiengesellschaft)
Table 2 compounded cream agent of the present invention and former prescription agent control rice leaf roller effect comparative trial
Test routine 2:(metaflumizone and chlorpyrifos ec field control effectiveness test) to striped rice borer and pink rice borer
Test period: in August, 2008
Test site: Jinhua, Zhejiang
Subjects: striped rice borer, pink rice borer
Test medicine: 31% metaflumizone. chlorpyrifos ec (product five)
Application method: complete stool spraying
Contrast medicament: 48% chlorpyrifos ec (Xianju Pesticide Factory, Zhejiang Prov.); 24% metaflumizone suspending agent (BASF Aktiengesellschaft)
Table 3 compounded cream agent of the present invention and former prescription agent control striped rice borer and pink rice borer effect comparative trial
Table 2, table 3 show that all composite dose of the present invention compares with chlopyrifos, significant prolongation the lasting period; And compare with metaflumizone, then significantly strengthened quick-acting.Therefore, this composite dose all has quick-acting and long-acting characteristic concurrently to rice leaf roller, striped rice borer and pink rice borer, becomes a kind of brand-new omnidistance efficient medicament, can reduce the field rotating medicine number of times.