CN104137835A - Weeding composition containing pyrithiobac-sodium - Google Patents

Abstract

The invention discloses a weeding composition containing pyrithiobac-sodium. The weeding composition is prepared from the following raw materials in percentage by weight: 1%-25% of pyrithiobac-sodium, 10-40% of acetochlor, 1-30% of oxyfluorfen, 0.5-5% of wetting agent, 2-15% of dispersant and 10-85.5% of carrier. The weeding composition is prepared by combining the pyrithiobac-sodium, the acetochlor and the oxyfluorfen, the advantages of the three components are developed thoroughly, and therefore, the purpose of preventing and removing a plurality of types of weeds can be achieved by once application of the weeding composition; and the advantages of the components of the weeding composition complement each other, and the time and the labor both can be saved. The invention aims at providing an efficient, broad-spectrum and safe weeding composition which is capable of well preventing and treating weeds in cotton fields.

Description

A kind of Herbicidal combinations containing pyrithiobac-sodium

Technical field

The present invention relates to weed killer herbicide field, be specially a kind of Herbicidal combinations containing pyrithiobac-sodium.

Background technology

Cotton is important economic crops, in China, is mainly distributed in: the Yangtze river basin, the Huanghe valley and Xinjiang region.In recent years along with the continuous increase of cotton continuous cropping and cultivated area, Application of Herbicides is also more and more widely used and promotes, peasant's routine administration method is generally single drug, but single drug exists certain limitation: as Acetochlor is prevented and kill off object: the broad leaved weed of annual gramineous weed and part small-sized seed.Annual gramineous weed is had to special efficacy, the broad leaved weeds such as Chenopodiaceae, Amaranthaceae, polygonaceae, dayflower, ox chickweed, china dodder are also had to certain preventive effect, but effect comparison grassy weed is poor, invalid to perennial weed.Oxyfluorfen is contact killing type weed killer herbicide.In the situation that having light, bring into play its activity of weeding, mainly by coleoptile, mesocotyl, enter in plant corpus, less through root absorption, and have denier to enter leaf portion by the root transportation that makes progress, to the preventive effect of broad leaved weed higher than with undergraduate course weeds.Pyrithiobac-sodium is prevented and kill off object: annual and perennial grassy weed and most of broad leaved weed, lady's-grass is only had to inhibitory action, and the effect of preventing and kill off is poor.

Summary of the invention

The present invention is directed to above weak point, a kind of Herbicidal combinations containing pyrithiobac-sodium is provided, take pyrithiobac-sodium, Acetochlor and Oxyfluorfen carries out composite as effective ingredient, give full play to three's advantage, a dispenser can reach the object of preventing and kill off multiple weeds, has complementary advantages, and not only saves time but also laborsaving, the object of the invention is to provide a kind of Herbicidal combinations of high-efficiency broad spectrum safety, can prevent and treat admirably Cotton Fields weeds.

The technical solution adopted for the present invention to solve the technical problems is: a kind of Herbicidal combinations containing pyrithiobac-sodium, and formulated by the raw material of following percentage by weight: pyrithiobac-sodium 1%～25%, Acetochlor 10～40%, Oxyfluorfen 1～30%, wetting agent 0.5～5%, dispersant 2～15%, carrier 10～85.5%.

Described wetting agent is lauryl sodium sulfate, dodecyl sodium sulfate, polyoxyethylated alkyl phenol, polyoxyethylene aliphatic alcohol ether, one or more of polyoxyethylene polyoxypropylene block copolymer.

Described dispersant is one or more in sodium lignin sulfonate, calcium lignosulfonate, Negel, naphthalenesulfonic acid-formaldehyde condensate, Sodium Polyacrylate, disecoctylmaleate sodium sulfonate, N-methyl fatty acyl group sodium taurocholate, sodium methylene bis-naphthalene sulfonate, condensation compound of methyl naphthalene sulfonic acid and formaldehyde sulphate.

Described carrier is one or more combination in kaolin, diatomite, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay and the mixture of white carbon.

A preparation method who contains the Herbicidal combinations of pyrithiobac-sodium, includes following lower processing step:

A adopts substep hybrid technique, first by 1/2nd of carrier white carbon weight, adds in mixer, then adds the acetochlor oil measuring, and starts stirring, mixes approximately 30～40 minutes, and then adds other load weighted raw material, mixes.

B starts airslide disintegrating mill, and the above-mentioned raw material mixing is added in airslide disintegrating mill and pulverized, and the material crushing is added in mixer and mixed, obtains wetting powder.

The invention has the beneficial effects as follows:

Pyrithiobac-sodium english common name is Pyrithiobac-sodium, chemical name is: the chloro-6-(4 of 2-, 6-dimethoxypyridin-2-base sulphur) Sodium Benzoate, is side chain amino acid synthetic inhibitor, for preventing and treating the annual and perennial broadleaf weed of Cotton Fields; Acetochlor english common name is acetochlor, it is selectivity bud pre-treatment weed killer herbicide, mainly the hypocotyl by monocotyledonous coleoptile or dicotyledon absorbs, absorb backward upper conduction, it is main that by impede protein matter is synthetic, Cell growth inhibition stops weeds young shoot, young root growth; Oxyfluorfen english common name is Oxyfluorfen, and chemical name is: the chloro-4-trifluoromethyl-3'-of 2-ethyoxyl-4'-nitrobenzophenone ether is before selectivity bud or post-emergence herbicide;

Three kinds of medicaments are used in combination, have expanded herbicide spectrum, according to the feature of three kinds of effective ingredients, the present invention is made to wetting powder;

Said composition stable chemical nature, 54 ± 2 ℃ of sealed type storages after heat in 14 days storage resolution ratio is less than 5%, and suspensibility, more than 80%, reaches the standard-required of country to wetting powder.The present invention combines the advantage of the broad-spectrum weed-killing of pyrithiobac-sodium, Acetochlor, Oxyfluorfen; From the mechanism of action, there is the wide potential possibility of herbicidal spectrum.Through field medicine effect test, three is composite, mu consumption 120 ml, after medicine 40 days to the preventive effect of broad leaved weed more than 94%, to the preventive effect of grassy weed, more than 90%, total preventive effect is more than 92%; While using separately, after medicine 40 days is 83.4% to the preventive effect pyrithiobac-sodium of broad leaved weed, and Acetochlor is 65.4%, and Oxyfluorfen is 85.3%, to the preventive effect pyrithiobac-sodium of grassy weed, is 84.6%, and Acetochlor is 86.3%, and Oxyfluorfen is 78.6%;

Said composition is carried out toxicity test by healthy white rat, rabbit for horn method, and result of the test is as follows:

(1) the present invention is greater than 3130mg/kg to rat acute LD50 of passing through mouth;

(2) the present invention is greater than 3050 mg/kg to rat acute through skin LD50;

(3) the present invention all has no stimulation to rabbit eyes, skin, according to toxicity grading standard, is low toxicity.

Embodiment

Below in conjunction with specific embodiment, describe the present invention:

Example 1

Pyrithiobac-sodium 1%

Acetochlor 40%

Oxyfluorfen 5%

Lauryl sodium sulfate 2.5%

Polyoxyethylated alkyl phenol 2.5%

Sodium methylene bis-naphthalene sulfonate 12%

White carbon 20%

Kaolin supplies 100%

Preparation method: adopt substep hybrid technique, first A adds in mixer 1/2nd of carrier white carbon weight, then adds the acetochlor oil measuring, start stirring, mix approximately 30～40 minutes, and then add other load weighted raw material, mix.

B starts airslide disintegrating mill, and the above-mentioned raw material mixing is added in airslide disintegrating mill and pulverized, and the material crushing is added in mixer and mixed, obtains wetting powder.Carry out the analyzing and testing of indices.

Example 2

Pyrithiobac-sodium 5%

Acetochlor 40%

Oxyfluorfen 1%

Polyoxyethylated alkyl phenol 4%

Negel 10%

White carbon 35%

Diatomite supplies 100%

Preparation method: adopt substep hybrid technique, first A adds in mixer 1/2nd of carrier white carbon weight, then adds the acetochlor oil measuring, start stirring, mix approximately 30～40 minutes, and then add other load weighted raw material, mix.

B starts airslide disintegrating mill, and the above-mentioned raw material mixing is added in airslide disintegrating mill and pulverized, and the material crushing is added in mixer and mixed, obtains wetting powder.Carry out the analyzing and testing of indices.

Example 3

Pyrithiobac-sodium 15%

Acetochlor 30%

Oxyfluorfen 30%

Dodecyl sodium sulfate 1.5%

Condensation compound of methyl naphthalene sulfonic acid and formaldehyde sulphate 2%

White carbon 20%

Attapulgite supplies 100%

Preparation method: adopt substep hybrid technique, first A adds in mixer 1/2nd of carrier white carbon weight, then adds the acetochlor oil measuring, start stirring, mix approximately 30～40 minutes, and then add other load weighted raw material, mix.

B starts airslide disintegrating mill, and the above-mentioned raw material mixing is added in airslide disintegrating mill and pulverized, and the material crushing is added in mixer and mixed, obtains wetting powder.Carry out the analyzing and testing of indices.

Example 4

Pyrithiobac-sodium 20%

Acetochlor 20%

Oxyfluorfen 20%

Polyoxyethylene aliphatic alcohol ether 2%

Naphthalenesulfonic acid-formaldehyde condensate 6%

White carbon 25%

Potter's clay supplies 100%

Preparation method: adopt substep hybrid technique, first A adds in mixer 1/2nd of carrier white carbon weight, then adds the acetochlor oil measuring, start stirring, mix approximately 30～40 minutes, and then add other load weighted raw material, mix.

B starts airslide disintegrating mill, and the above-mentioned raw material mixing is added in airslide disintegrating mill and pulverized, and the material crushing is added in mixer and mixed, obtains wetting powder.Carry out the analyzing and testing of indices.

Embodiment 5

Pyrithiobac-sodium 25%

Acetochlor 10%

Oxyfluorfen 10%

Polyoxyethylene polyoxypropylene block copolymer 3%

Calcium lignosulfonate 10%

Sodium Polyacrylate 5%

White carbon 30%

Precipitated calcium carbonate supplies 100%

Preparation method: adopt substep hybrid technique, first A adds in mixer 1/2nd of carrier white carbon weight, then adds the acetochlor oil measuring, start stirring, mix approximately 30～40 minutes, and then add other load weighted raw material, mix.

B starts airslide disintegrating mill, and the above-mentioned raw material mixing is added in airslide disintegrating mill and pulverized, and the material crushing is added in mixer and mixed, obtains wetting powder.Carry out the analyzing and testing of indices.

Embodiment 6

Pyrithiobac-sodium 1%

Acetochlor 10%

Oxyfluorfen 1%

Lauryl sodium sulfate 0.5%

Disecoctylmaleate sodium sulfonate 2%

White carbon 30%

Potter's clay 20%

Talcum powder supplies 100%

Preparation method: adopt substep hybrid technique, first A adds in mixer 1/2nd of carrier white carbon weight, then adds the acetochlor oil measuring, start stirring, mix approximately 30～40 minutes, and then add other load weighted raw material, mix.

B starts airslide disintegrating mill, and the above-mentioned raw material mixing is added in airslide disintegrating mill and pulverized, and the material crushing is added in mixer and mixed, obtains wetting powder.Carry out the analyzing and testing of indices.

Embodiment 7

Pyrithiobac-sodium 10%

Acetochlor 40%

Oxyfluorfen 30%

Lauryl sodium sulfate 1%

N-methyl fatty acyl group sodium taurocholate 4%

Sodium lignin sulfonate 5%

White carbon 5%

Talcum powder supplies 100%

Preparation method: adopt substep hybrid technique, first A adds in mixer 1/2nd of carrier white carbon weight, then adds the acetochlor oil measuring, start stirring, mix approximately 30～40 minutes, and then add other load weighted raw material, mix.

B starts airslide disintegrating mill, and the above-mentioned raw material mixing is added in airslide disintegrating mill and pulverized, and the material crushing is added in mixer and mixed, obtains wetting powder.Carry out the analyzing and testing of indices.

Stability of drug products test

The preparation being made in the ratio of embodiment 1-4, by sample is stored 14 days at 54 ℃, stores 7 days at 0 ℃, its physics and chemistry stability in Table 1, table 2, table 3 and table 4.

Table 1

Table 2

Table 3

Table 4

Comparative trial:

By above contrast experiment, can be found out, use the Herbicidal combinations of equal quality and single acetochlor ec, in Herbicidal combinations, Acetochlor active constituent content is lower than single acetochlor ec, but the control efficiency of Herbicidal combinations is high more a lot of than single acetochlor ec.The in the situation that in Herbicidal combinations, Oxyfluorfen active ingredient being lower than single oxyfluorfen EC equally, Herbicidal combinations herbicidal effect will be got well.

Claims (5)

1. the Herbicidal combinations containing pyrithiobac-sodium, it is characterized in that, formulated by the raw material of following percentage by weight: pyrithiobac-sodium 1%～25%, Acetochlor 10～40%, Oxyfluorfen 1～30%, wetting agent 0.5～5%, dispersant 2～15%, carrier 10～85.5%.

2. a kind of Herbicidal combinations containing pyrithiobac-sodium according to claim 1, it is characterized in that, described wetting agent is lauryl sodium sulfate, dodecyl sodium sulfate, polyoxyethylated alkyl phenol, polyoxyethylene aliphatic alcohol ether, one or more of polyoxyethylene polyoxypropylene block copolymer.

3. a kind of Herbicidal combinations containing pyrithiobac-sodium according to claim 1; it is characterized in that, described dispersant is one or more in sodium lignin sulfonate, calcium lignosulfonate, Negel, naphthalenesulfonic acid-formaldehyde condensate, Sodium Polyacrylate, disecoctylmaleate sodium sulfonate, N-methyl fatty acyl group sodium taurocholate, sodium methylene bis-naphthalene sulfonate, condensation compound of methyl naphthalene sulfonic acid and formaldehyde sulphate.

4. a kind of Herbicidal combinations containing pyrithiobac-sodium according to claim 1, is characterized in that, described carrier is one or more combination in kaolin, diatomite, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay and the mixture of white carbon.

5. the preparation method of a kind of Herbicidal combinations containing pyrithiobac-sodium as claimed in claim 1, is characterized in that, described preparation method includes following lower processing step:

A adopts substep hybrid technique, first by 1/2nd of carrier white carbon weight, adds in mixer, then adds the acetochlor oil measuring, and starts stirring, mixes approximately 30～40 minutes, and then adds other load weighted raw material, mixes;

B starts airslide disintegrating mill, and the above-mentioned raw material mixing is added in airslide disintegrating mill and pulverized, and the material crushing is added in mixer and mixed, obtains wetting powder.