CN102524278A - Oxaziclomefone, pyrazosulfuron, pretilachlor ternary effervescent herbicide for paddy fields and preparation method thereof - Google Patents

Abstract

The invention provides a novel herbicide composition which has the advantages of green and environment-friendly formulation, convenience for use, one-off in use, capability of extirpating both of gramineae and broadleaf weed, simpleness and convenience for throwing and applying. The herbicide composition is an oxaziclomefone, pyrazosulfuron, pretilachlor ternary effervescent herbicide for paddy fields, which is composed of oxaziclomefone, pyrazosulfuron, pretilachlor, adsorbent, additive, nonionic surfactant, effervescent agent, adhesive and flow aid.

Description

Paddy field is with oxaziclomefone, pyrazosulfuron, third careless amine ternary effervesce weed killer herbicide and preparation method thereof

Technical field

The present invention relates to a kind of herbicidal composition and preparation method thereof, relate in particular to a kind of oxaziclomefone, pyrazosulfuron and third careless amine ternary effervescent agent weed killer herbicide that is used for killing weeds in rice field and preparation method thereof.

Technical background

Along with science and technology development, the appearance of herbicides special and use have reduced the labour intensity of vast farmers on the one hand; Can control weeds effectively again on the other hand, realize raising the output.In order to safeguard human beings'health; Reduce environmental pollution, protect our environment, guarantee our food security; The research of weed killer herbicide just develops towards efficient, low toxicity, low-residue green environmental protection direction with application; The all parts of the world researcher has been made permanent and fruitful effort for it, and the weed killer herbicide kind of novel, efficient, easy to use, low toxicity, low-residual continues to bring out, and has received vast farmers user's welcome.

The temperature of paddy field, humidity and soil condition help growth and the breeding of various weeds, and farmland weed is of a great variety, brings certain difficulty to chemical weed control; Show that especially the control efficiency of some weed killer herbicide kind in different regions differs greatly. with regard to the whole nation, use the consumption and the variety analysis of chemical herbicide killing weeds in rice field throughout the year, be not difficult to draw such conclusion: the one, dosing is bigger; Kind is single, aging; New composite of less types, the 2nd, weeds research aspect, all parts of the country all are in the kind investigation phase; Only there are indivedual provincial R&D institutions to reach research to the rice yield influence at the biological property of making some malignant weeds, control technology; But the economic threshold values of weeds in paddy field hazard rice, the formulation and the weeds pesticide resistance problem of index for control are lacked deep research,, killing weeds in rice field; Must find out weeds in paddy field generation kind and sociales earlier; And grasp the biological property of main malignant weed, and find out the weak link of weed growth, select efficient, low toxicity, low-residual medicament for use.

Novel, easy to use, weeding herbicidal composition completely continues to bring out, and weed killer herbicide is reasonably used in updating of weeding technology.For delay the resistance of weeds as far as possible, prolong the service life of weed killer herbicide, reduce the usage amount and the environmental pollution of weed killer herbicide, new approach is provided.Herbicide for paddy field commonly used on the current market is missible oil class and wetting powder, and a large amount of toxic solvents that the missible oil series products contains have increased cost, have also caused huge pollution to environment; And the processing environment of wetting powder also impacts workers'health, and these two kinds of formulations all need the spraying, perhaps pesticide-clay mixture spreads fertilizer over the fields, and needs the manpower and materials of labor, has increased extra cost.

Technology contents

Based on to the taking all factors into consideration of weeds in paddy field, agricultural chemicals aspect, the present invention aims to provide a kind of new herbicidal composition, and it has the formulation environmental protection, and is easy to use, a drug, and wealthy two the removing of standing grain thrown and executed easy advantage.

This herbicidal composition be paddy field with oxaziclomefone, pyrazosulfuron, the third careless amine ternary effervesce weed killer herbicide, form by oxaziclomefone, pyrazosulfuron, the third careless amine, adsorbent, additive, non-ionic surface active agent, effervescent agent, adhesive and glidant.Wherein, by weight percentage, each component and the prescription as follows:

Oxaziclomefone accounts for 1%-3%; Pyrazosulfuron accounts for 05%-5%; The third careless amine accounts for 5%-35%; Adsorbent accounts for 10%-20%, is selected from sawdust, white carbon, starch or attapulgite; Additive accounts for 2%-15%, is selected from one in sulfoacid calcium, lauryl sodium sulfate, wooden sodium sulfonate and the sodium butylnaphthalenesulfonate or two kinds; Non-ionic surface active agent accounts for 2%-10%, is selected from Tween-80, APES or Si Ban-80; Effervescent agent accounts for 20%-55%, is selected from citric acid, tartaric acid, niter cake, oxalic acid, sodium bicarbonate and the sodium carbonate two or more; Binder constitutes 1%-5% is selected from polyvinyl alcohol, PVP or Sodium Polyacrylate; Glidant accounts for 0.5%-3%, is selected from superfine silica gel powder, dolomol, amylum pregelatinisatum and the talcum powder one or both.

The processing formulation of said weed killer herbicide can be granule or tablet.

The preparation method of this weed killer herbicide is following:

A. take by weighing said adhesive by formula rate, with ethanol be solvent to be made into percentage by weight be 10% solution, subsequent use;

B. take by weighing the said third careless amine by formula rate, behind the adsorbents adsorb mixing, add into oxaziclomefone, pyrazosulfuron, additive, non-ionic surface active agent and effervescent agent, mixing with formula rate then;

C. the ethanolic solution that adds in the steps A is processed softwood, and cross 20 mesh sieves and granulate, 45 ℃ of following forced air dryings 2 hours, the whole grain of 18 mesh sieves, than adding glidant, fully mixing obtains this product by prescription.

Embodiment

Embodiment 1

But take by weighing 900 absolute ethyl alcohols, place there-necked flask, stir the 100 gram polyvinyl alcohol of adding down, behind water white transparency, stop to stir, wait until subsequent use;

170 gram white carbons are added in the blender, stir 140 grams of adding down, the third careless amine, after waiting to adsorb mixing, continue to add 8.4 gram NPEs; 7.6 the gram calcium dodecyl benzene sulfonate, 116 gram lauryl sodium sulfate, 32 gram wooden sodium sulfonates; 16 gram sodium butylnaphthalenesulfonates, 13 gram oxaziclomefones, 12 gram pyrazosulfurons; Citric acid 200 grams, sodium bicarbonate 160 grams are behind the 16 gram Tween-80 stirring and evenly mixings; About 500 milliliters of 10% poly-vinyl alcohol solution that adding prepares in advance, wet method is made 20 order grains, places pallet to dry 2 hours about 45 ℃ at hot-air oven; After the oven dry,, add 50 gram dolomols again after the whole grain of 18 mesh sieves; 50 gram superfine silica gel powders, detection level adds mixed particulate material the charging spout of the good tablet press machine of debugging in advance 16.5% behind the mixing; Carrying out compressing tablet, promptly to get content be 1 kilogram of 16.5% effervescent tablet, detects qualified back packing.

Embodiment two

Take by weighing 135 kilograms of absolute ethyl alcohols, drop in 200 liters of agitated reactors, start stirring, time 15 kilograms of PVPs of adding stir until dissolving fully in five batches, and sampling observation behind the water white transparency, stops stirring, waits until subsequent use.

In blender, add 15 kilograms of sawdusts, under stirring fast, add 24 kilogram of third careless amine liquid, added in about 20 minutes, continue to stir 15 minutes; Progressively add the 0.94 kilogram of NPE that crushes, 0.86 kilogram of calcium dodecyl benzene sulfonate, 14 kilograms of lauryl sodium sulfate, 4.5 kilograms of wooden sodium sulfonates then; 2.4 the kilogram sodium butylnaphthalenesulfonate, 2 kilograms of oxaziclomefones, 2 kilograms of pyrazosulfurons, 32 kilograms in tartaric acid; 24 kilograms of sodium bicarbonates, 2.6 kilograms of Tween-80s mix about 25 minutes continuously; Do not shut down device, add the 10% PVP ethanolic solution for preparing in advance, approximately add 80 kilograms with the mode of spraying; The humidity of observing compound is suitable, derives material, deposits in the closed container; Compound that humidity is suitable adds Squeezinggranulator, and boiled bed drying reclaims the ethanol that particle volatilizees in dry run, and the gained effervescence granular is 24% content, detects qualified after, pack through whole grain back.

Embodiment three

Open condensed water, start stirring, add 1730 liters of the absolute ethyl alcohols (about 1350 kilograms) that measure in advance to 2000 liters glassed steel reaction vessels from the ethanol gravity tank; Add load weighted PVP under the negative pressure, dissolving is until water white transparency, after the sampling detection is qualified; Stop to stir, for use;

150 kilograms of sawdusts addings are pressed mixing and blending machine fast, machine, Open valve is to 240 kilograms of the third careless amine liquid that wherein sprays oily; Added in about 40 minutes, continued batch mixing 20 minutes, be discharged in the Agravicmixer, in Agravicmixer, add 9.4 kilograms of the suitable NPEs of fineness successively; 8.6 kilograms of calcium dodecyl benzene sulfonates, 140 kilograms of lauryl sodium sulfate, 45 kilograms of wooden sodium sulfonates, 24 kilograms of sodium butylnaphthalenesulfonates; 20 kilograms of oxaziclomefones, 20 kilograms of pyrazosulfurons, 320 kilograms in tartaric acid; 240 kilograms of sodium bicarbonates, 26 kilograms of Tween-80s, batch mixing is about 40 minutes continuously;

The 10% PVP ethanolic solution that configures in 1 through metering, is added about 800 kilograms, and after treating to mix fully, blowing gets into and waves comminutor, and granulation continuously directly gets into the boiled bed drying system, and baking temperature must not surpass 50 degree;

The particle that drying is good adds V-Mixer, adds 130 kilograms of talcum powder again, mixes the back and carries out compressing tablet with rotary pelleting machine.

Pack after the assay was approved.

Comparative example:

Test of pesticide effectiveness medicine: 16.5% oxaziclomefone. the third careless amine. the pyrazosulfuron effervescent tablet; Contrast medicament: 20% bensulfuron-methyl. the third careless amine wetting powder;

Dosage 300-375g a.i/hm ²

Medication administration time and mode: after the transplant field rice transplanting 4-6 days; The former directly spreads fertilizer over the fields, and the latter converts water spray;

After the medication behind the medicine 35 days drug effects following:

The 17% the third careless amine. the pyrazosulfuron effervescent tablet is comparatively desirable to the fresh weight preventive effect of rice field malignant weed barnyard grass grass.At 300g a.i./hm ²Middle dosage under the fresh weight preventive effect be 94.24%, a little more than contrast medicament (89.34%), but there was no significant difference; And at 375ga.i./hm ²High dose under the fresh weight preventive effect be 98.23%, be significantly higher than in dosage and the contrast medicament.Preventive effect to moleplant seed slightly promotes, at 335g a.i./hm ²Middle dosage under the fresh weight preventive effect be 93.49%, a little less than contrast medicament (94.68%), but there was no significant difference; And at 375g a.i./hm ²High dose under the fresh weight preventive effect be 98.74%, be significantly higher than low dosage and the contrast medicament.Preventive effect to arrowhead is splendid, at 300g a.i./hm ²Low dosage under the fresh weight preventive effect just reach 100.00%, with middle dosage and contrast medicament there was no significant difference.Comprehensive fresh weight preventive effect to three kinds of weeds is better.At 335g a.i./hm ²Middle dosage under the fresh weight preventive effect be 96.73%, a little more than contrast medicament (93.66%), but there was no significant difference; And the fresh weight preventive effect reaches 98.70% under the high dose of 375g a.i./hm2, dosage and contrast medicament in being significantly higher than.

16.5% oxaziclomefone. the third careless amine. pyrazosulfuron effervescent tablet, 20% bensulfuron-methyl. the third careless amine wetting powder all is a paddy field enclosed type weed killer herbicide; Young shoot, young root by plant absorb; Destroy the protease of chitting piece cell, suppress the growth of young shoot and young root, make the bud deformity dead.From result of the test; 16.5% oxaziclomefone. the third careless amine. the pyrazosulfuron effervescent tablet is suitable for transplanting the back in the paddy field to be used; When emerging, weeds do not use; In the dosage range of commodity amount 2000g-2500g/hm2, the annual weed (like barnyard grass grass, moleplant seed, arrowhead, kitchen garden and cyperus iria etc.) in transplanting rice field is had preventive effect preferably, therefore recommending the land for growing field crops commercially available medicine consumption of this medicament is 2000-2500g/hm2.

From the result of safety testing, 16.5% oxaziclomefone. the third careless amine. the pyrazosulfuron effervescent tablet in the dosage range that test is provided with to the growth safety of paddy rice.Since anti-except weeds, paddy rice there is certain production-increasing function.

From angle easy to use, the former directly spreads fertilizer over the fields, and has reduced cost of labor; And latter's (contrast medicament) need convert water spray, has increased labour intensity, and is inconvenient to use.

Claims (4)

1. a paddy field is with oxaziclomefone, pyrazosulfuron, the third careless amine ternary effervesce weed killer herbicide; It is characterized in that this weed killer herbicide is made up of oxaziclomefone, pyrazosulfuron, the third careless amine, adsorbent, additive, non-ionic surface active agent, effervescent agent, adhesive and retention agent; Wherein, By weight percentage, each component and prescription are as follows:

Oxaziclomefone accounts for 1%-3%; Pyrazosulfuron accounts for 05%-5%; The third careless amine accounts for 5%-35%; Adsorbent accounts for 10%-20%, is selected from sawdust, white carbon, starch or attapulgite; Additive accounts for 2%-15%, is selected from one in sulfoacid calcium, lauryl sodium sulfate, wooden sodium sulfonate and the sodium butylnaphthalenesulfonate or two kinds; Non-ionic surface active agent accounts for 2%-10%, is selected from Tween-80, APES or Si Ban-80; Effervescent agent accounts for 20%-55%, is selected from citric acid, tartaric acid, niter cake, oxalic acid, sodium bicarbonate and the sodium carbonate two or more; Binder constitutes 1%-5% is selected from polyvinyl alcohol, PVP or Sodium Polyacrylate; Glidant accounts for 0.5%-3%, is selected from superfine silica gel powder, dolomol, amylum pregelatinisatum and the talcum powder one or both.

2. ternary effervesce weed killer herbicide as claimed in claim 1 is characterized in that its processing formulation is a particle.

3. ternary effervesce weed killer herbicide as claimed in claim 1 is characterized in that its processing formulation is a tablet.

4. the preparation method of ternary effervesce weed killer herbicide as claimed in claim 1 is characterized in that by following prepared:

A. take by weighing said adhesive by formula rate, with ethanol be solvent to be made into percentage by weight be 10% solution, subsequent use;

B. take by weighing the said third careless amine by formula rate, behind the adsorbents adsorb mixing, add into oxaziclomefone, pyrazosulfuron, additive, non-ionic surface active agent and effervescent agent, mixing with formula rate then;

C. the ethanolic solution that adds in the steps A is processed softwood, and cross 20 mesh sieves and granulate, 45 ℃ of following forced air dryings 2 hours, the whole grain of 18 mesh sieves, than adding glidant, fully mixing obtains this product by prescription.