CN1698437A - Pesticide for preventing mollusks such as snail and slug - Google Patents

Abstract

The invention provides a pesticide for preventing mollusks such as snail and slug, which comprises cupric sulfate pentahydrate 70.0-78.5 wt%, meta-toly-N-methylcarbamate 0.05-0.55%, WPA 1.0-5.5%, and balancing anhydrous sodium carbonate (or other foreign matter). The medicament provided by the invention has strong eradication efficiency and long-acting prevention action.

Description

A kind of agricultural chemicals of preventing and treating mollusks such as snail and slug

Affiliated technical field

The present invention is a kind of for molluscan highly effective pesticides such as control snail, slugs.

Technical background

According to interrelated data retrieval, the agricultural chemicals of also not filling a prescription control snail slug identical with the present invention at present.It is that (trade name gram snail is clean for copper sulphate meta-tolyl-N-methylcarbamate (MTMC) wetting powder that the agricultural chemicals of present control snail has denomination of invention, original name snail gram), patent of invention number: ZL94111510.0, by cupric sulfate pentahydrate, meta-tolyl-N-methylcarbamate (MTMC) and natrium carbonicum calcinatum mix to be formed, cupric sulfate pentahydrate content is 77.7～80.2% by weight, and meta-tolyl-N-methylcarbamate (MTMC) content is 0.3～0.7%, and all the other are natrium carbonicum calcinatum.The gram snail is only with spray method control snail, its weak point snail efficient of going out is on the low side, drug effect descends fast, to snail mainly is to refuse the effect of keeping away, 1 control efficiency of medication in seedling stage has only 55～65%, and its dosage big (260 gram/mu) has increased pesticide cost, cause poisoning easily, the useful natural enemy of people and animals and insect is had certain injury and easily causes the pollution of ecological environment of soil crops.At present both at home and abroad mainly with granule poison bait control snail, slug; domestic have 6% snail go out good, abroad have 6% closely reach, the 2% non-irrigated spiral shell granule etc. that goes out; all be limited to before the crop seedling and the use in seedling stage; crops there is not direct protective action; because of dosage big (500 gram/mu); be sprinkled upon again in the farmland, useful natural enemy of crops and poultry (chicken and duck etc.) are all had certain toxic action.

Summary of the invention

The objective of the invention is to overcome the weak point of existing control snail, slug agricultural chemicals, a kind of low toxicity low content, low consumption low cost are provided, the insect killing efficiency high-drug-effect phase is long, to crops, person poultry safety, environmental ecology is polluted few a kind of agricultural chemicals of preventing and treating mollusks such as snail and slug.

The present invention is achieved by the following technical solutions, and it is filled a prescription by cupric sulfate pentahydrate (CUSO ₄5H ₂O), meta-tolyl-N-methylcarbamate (MTMC) (C _gH ₁₁NO ₂) or Methomyl (C ₅H ₁₀N ₂O ₂S), the auxiliary agent WPA of wetting powder and natrium carbonicum calcinatum (NO ₂CO ₃) mix and form, cupric sulfate pentahydrate content is 70.0～78.5% by weight, and the content of meta-tolyl-N-methylcarbamate (MTMC) or Methomyl is 0.05～0.55%, and WPA content is 1.0～5.5%, and all the other are (containing other impurity, down together) such as natrium carbonicum calcinatums.According to the above ratio after the weighing, cupric sulfate pentahydrate is made drying and crushing earlier and is handled, make it lose chemical combination attitude water 8-11%, mix the back assembly packaging with agravic agitator again, the water addition ratio example is 1: 180～200 times liquid, fully the dissolving back with manual sprayer to being subjected to the crops control of spraying of causing harm of snail, slug.

The present invention is because of adding wettable powder agent aid WPA, strengthened medicament to the wetting dispersion of target, opening up the adhesion infiltration capacity, though cupric sulfate pentahydrate, meta-tolyl-N-methylcarbamate (MTMC) or Methomyl effective content descend and the dilution multiple proportions increases, but the present invention compares with existing control snail, slug agricultural chemicals, has the eradicative rate height, the drug effect phase is long, prolong the safe-use period, enlarge the scope of application, double fungi bacteriosis, the stimulation plant growth volume increase highly significant controlled, reduce dosage and save pesticide cost, strengthen advantage the environmental ecology safety.Its notable feature; Further improved the snail effect of increasing production of going out: crops are sprayed the snail rate 75.0～90.8% of going out after 1 time 7 days, 8.5～15.6 percentage points of Bick snail clear height, than close reach high 21.5～27.2 percentage points, substantially not having snail on the plant in 13 days behind the spray medicine causes harm, the drug effect phase reaches 20～25, clean long 3～5 days of Bick snail reaches long 12～17 than close.For example academy of agricultural sciences, Jiangxi Province plant protection research institute tests soybean field control snail in June, 2004; (the trade name snail of going out is good with 74% copper sulphate meta-tolyl-N-methylcarbamate (MTMC) wetting powder; wherein cupric sulfate pentahydrate content accounts for 73.9%; meta-tolyl-N-methylcarbamate (MTMC) content accounts for 0.1%; WPA accounts for 1.5%; Carbon Dioxide content 24.5%), every mu of spraying liquid is prevented and treated for 50 kilograms, 20 days 180 times of liquid (3083.3 gram ai/hm behind the spray medicine ²) the snail effect of going out 97.84%, 200 times of liquid (2775 gram ai/hm ²) 86.77%; Jiangsu Qidong City Plant Protection ﹠ Plant Quarantine Station in June, 2003 is when every mu of snail 4.0～4.8 ten thousand head height density, respectively account for 0.05～0.4% with meta-tolyl-N-methylcarbamate (MTMC), Methomyl content, respectively with cupric sulfate pentahydrate 73.0～75.1%, wettable powder agent aid WPA1.3～3.5%, all the other carry out multiple assembly for natrium carbonicum calcinatum, in soybean, cotton, rape, peanut and other crops field, carry out multiple spot control demonstration, the snail effect 85.5～98.2% of going out after the equal medication of each demonstration pilot project 2 times, the leaf effect 80.5～90.3% of keeping a full stand of seedings.Wherein soybean yield-increasing is 6.5～8 one-tenth, and many reaches more than 1.5 times, average every mu of big 50～58kg of volume increase, and control investment reaches 1: 8 with the income ratio～9, and the harm reduction obvious effect of increasing production is better than restraining snail reaches only, close, snail is gone out snail, the slug agricultural chemicals of killing such as good.Alleviated the pollution to environmental ecology: the copper ion in the cupric sulfate pentahydrate has contamination to soil, long-term excessive use is accumulated in the soil, easily cause poisoning to crops, injure useful natural enemy and cause person poultry poisoning's accident, for example 74% go out snail good with 80.3% gram snail clean wetting powder (cupric sulfate pentahydrate content 80%, meta-tolyl-N-methylcarbamate (MTMC) content 0.3%, all the other are natrium carbonicum calcinatum) compare, cupric sulfate pentahydrate reduces 6.1 percentage points, meta-tolyl-N-methylcarbamate (MTMC) reduces 0.2 percentage point, because the decline of poisonous chemical content has alleviated the pollution to environmental ecology.Prolonged the safe-use period: according to copper content standard in the soil of China's formulation, general farmland, the tea place, copper content is controlled at 2 grade standards in the vegetable field soil, soil acidity or alkalinity PH＜6.5 (acid ground) are 50mg/kg, P in soil H＞6.5 (neutral and meta-alkalescence soil) are 100mg/kg, it allows service life=controlling value (mg/kg)-background value (mg/kg)/year increasing value amount (mg/kg), the background value of copper cellulose content is 35mg/kg in China's soil, with 74% go out snail good be example, every year, the highest medication was 2 times, every mu 220 gram of the highest consumption controlled snail is caused harm at every turn, the quantity that is converted to copper is 82.72 gram/mus, general finally all accumulate in soil table 20cm topsoil soils (being equivalent to 150,000 kg/ mus) with the form of inorganic copper, calculate in acid ground with this and can use continuously 27 years, clean used 6 years of Bick snail more, in neutral and basic soil, can use 118 years the clean 26 years (lists of references: State Environmental Protection Administration's Nanjing Institute of Environmental Science " snail restrains ecological environment security evaluation suggestion ") that use of Bick snail continuously more.Enlarge the scope of application: the 74% good scope of application of snail of going out is wide, is used to prevent and treat the dry crop snail, slug can be used both at home and abroad, and 80.3% gram snail limit only middle and lower reaches and to the north of the area use; The good plant an aromatic plant metioned in ancient books foliar spray mist of both can having done of the snail of going out in the farmland is prevented and treated, and can make native face again and spray control snail, slug use, and the gram snail does the use of plant an aromatic plant metioned in ancient books foliar spray mist only only.Increase the dilution multiple proportions and save this expense of medicine; It is 1: 180～200 times liquid that the good control of the snail of going out snail is recommended working concentration, and 154 times of dilutions of Bick snail net concentration multiple proportions increases by 16.9～29.9%, and this expense of dosing medicine descends 14.4～23.0%.

Embodiment

The invention will be further described below in conjunction with embodiment: embodiment 1 prescription is: cupric sulfate pentahydrate content is 73.95% by weight, and meta-tolyl-N-methylcarbamate (MTMC) content is 0.05%, and wettable powder agent aid WPA content is 2%, and the Carbon Dioxide sodium content is 24%.The back cupric sulfate pentahydrate of weighing is made drying and crushing and is handled, and makes it lose chemical combination attitude water 8～11%, again by with 1: 180～200 times preparating liquids of water after be sprayed onto on the crops that are injured; Embodiment 2 prescriptions are: cupric sulfate pentahydrate content is 73.9% by weight, and meta-tolyl-N-methylcarbamate (MTMC) content is 0.1%, and WPA content is 1.5%, and the Carbon Dioxide sodium content is 24.5%, and all the other are with embodiment 1; Embodiment 3 prescriptions are: cupric sulfate pentahydrate content 76.8%, and meta-tolyl-N-methylcarbamate (MTMC) content 0.4%, WPA content 3.0%, Carbon Dioxide sodium content are 19.8%, all the other are with embodiment 1; Embodiment 4 prescriptions are: cupric sulfate pentahydrate content 72.5%, and Methomyl content 0.05%, WPA content 2.5%, Carbon Dioxide sodium content 24.95%, all the other are with embodiment 1; Embodiment 5 prescriptions are: cupric sulfate pentahydrate content 74.0%, and Methomyl content 0.3%, WPA content 1.5%, Carbon Dioxide sodium content 24.2%, all the other are with embodiment 1; Embodiment 6 prescriptions are: cupric sulfate pentahydrate content is 76.2%, and Methomyl content is 0.45%, and WPA content is 3.0%, and the Carbon Dioxide sodium content is 20.35%, and all the other are with embodiment 1.By the above-mentioned 180 times of liquid controls of respectively filling a prescription, the spray medicine is investigated insect killing effect to snail, slug (on the plant snail, slug go down rate) respectively after 7 days, example 1～example 3 prescriptions (add fast grey prestige, it is identical that all the other ginsengs are made into part), to snail is 84.04%, 85.14%, 86.15%, is 87.25%, 89.13%, 90.77% to slug; Example 4～example 6 prescriptions (add Methomyl, it is identical that all the other ginsengs are made into part) are 85.78%, 86.24%, 87.35% to snail, to slug 87.40%, 90.21%, 92.25%.6 pairs of snails of embodiment 1～example, slug insect killing effect are all relatively good, but do not have significant difference therebetween.

Claims (1)

1. A kind of agricultural chemicals of preventing and treating mollusks such as snail and slug, it is characterized in that by cupric sulfate pentahydrate, meta-tolyl-N-methylcarbamate (MTMC) or Methomyl, wettable powder agent aid WPA and natrium carbonicum calcinatum mix to be formed, the content of cupric sulfate pentahydrate is 70.0～78.5% by weight, the content of meta-tolyl-N-methylcarbamate (MTMC) or Methomyl is 0.05～0.55%, WPA content is 1.0～5.5%, and all the other are (containing other impurity) such as natrium carbonicum calcinatums; It converts the water ratio is 1: 180-200 times of liquid spraying control.