CN104396986A - Compounded herbicide used in corn field - Google Patents
Compounded herbicide used in corn field Download PDFInfo
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- CN104396986A CN104396986A CN201410677049.0A CN201410677049A CN104396986A CN 104396986 A CN104396986 A CN 104396986A CN 201410677049 A CN201410677049 A CN 201410677049A CN 104396986 A CN104396986 A CN 104396986A
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- complex weedicide
- nicosulfuron
- corn field
- atrazine
- corn
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Abstract
The invention discloses a compounded herbicide used in corn fields. The compounded herbicide used in corn fields comprises three active components, namely, nicosulfuron, atrazine and iodosulfuron, wherein the weight ratio of nicosulfuron to atrazine and iodosulfuron is (20-50):(150-300):(1-5). The invention provides the herbicide which is safe, fast in speed, wide in herbicide controlling spectrum, long in drug delivery period and small in environment influence.
Description
Technical field
The present invention relates to a kind of corn field complex weedicide.
Background technology
Corn be China's sowing area be only second to wheat and paddy rice and gross yield come the 3rd cereal crops, every Annual planting area reaches 2,140 ten thousand hm2, accounts for 18.9% of plant of grain crops area.Corn is that less and crop that Weed infestation is heavier occurs damage by disease and insect, and according to national weeds findings of the survey, corn field weed has 22 section .38 to belong to .43 kinds.The weeds of main harm corn field have: lady's-grass, scale grass, green foxtail, eleusine indica, anti-branch gram, horse tooth gram, iron gram, green onion, pair (before large and petty dealer), field bindweed, ivy glorybind, duck sun grass etc.And the harm of mattress phase is maximum, milpa can be caused short and small, bar spire Huang etc. has a strong impact on corn yield, underproduction amplitude can reach about 35%.
At present, corn field herbicide kind is more, but mostly there is various problem, as: herbicide spectrum is narrow, drug effect is not high, easily produces resistance, to the uneasy congruent problem of succession crop.Along with maize culture mode, cropping system constantly change, crop smothering problem is increasingly severe, and weeds in field is many, and the emergence period is long, and density is large, and harm is heavy, drastically influence output and the quality of corn.Therefore, selecting safety, efficiently chemical herbicide to be the main method of current corn field weeding, is also the key ensureing that Maize Production gets an abundant harvest.
Nicosulfuron is sulfonylurea systemic herbicide.Chemical name: 2-(4,6-dimethoxypyridin-2-pyrimidinyl-amino formamido group sulphonyl)-N, N-dimethyl nicotinamide.Nicosulfuron is interior absorption, high efficiency corn weed killer herbicide, with effectively preventing and kill off multiple annual gramineous weed, broad leaved weed and sedge weed in corn field after low dosage bud.It is absorbed rapidly by leaf and root, and is conducted rapidly by xylem and phloem, is stoped the synthesis of branched-chain amino acid by acetolactate synthestase.After using nicosulfuron, weeds stop growing immediately, and 4 ~ 5 days young leaves fade, downright bad, and progressively expand to whole plant, plant death in 20 ~ 25 days after process under general condition.This medicine not only has cauline leaf process effect, also has activity of weeding before bud.Corn has good drug resistance to this medicine, occurs temporary transient chlorisis or slight hypoevolutism, but generally can recover rapidly and the not underproduction after process.
But in recent years, after nicosulfuron is used in certain areas, some corn general planting kinds create more serious poisoning.Corn 3-5 phase foliar spray executes 5-10d corn lobus cardiacus chlorisis after nicosulfuron, flavescence, or irregular chlorisis spot appears in blade.Some leaf curl become tubular, leaf margin shrinkage, and lobus cardiacus oxtail shape, can not normally extract out.Corn growth is suppressed, and plant is downgraded, and possibility generating portion is grown thickly, secondary shoot.Light the restoreing normal growth of poisoning, serious affects output.The main cause producing poisoning is that dosage is excessive.
There are some researches show, nicosulfuron easily produces poisoning to the corn variety of sensitivity under routine dose.When nicosulfuron adds atrazine with identical dosage, when the ratio of both unit are consumptions is 1:12 ~ 12:1, the poisoning degree of corn declines with the raising of atrazine ratio.When the usage ratio of atrazine and nicosulfuron is less than 6:1, the poisoning of nicosulfuron can not be overcome completely, and symptom of chemical damage disappears completely when their usage ratio brings up to 12:1.Proving through 2 years field trials, is the 19% cigarette green bristlegrass oil suspending agent that 12:1 develops according to atrazine and nicosulfuron usage ratio, obviously can overcome the poisoning of the responsive corn variety of nicosulfuron alignment degree, can reach good herbicidal effect simultaneously.
But cigarette green bristlegrass oil suspending agent can produce poisoning equally, when consumption is not right, or when using under the weather such as high temperature, arid, after one's own heart leaf base can be produced and move back green, or blade occurs irregularly moving back green statin.Some leaf curl become tubular, leaf margin shrinkage, affect lobus cardiacus and extract out.The oblique growth had is in lodging shape.Growth inhibition, the phenomenon of plant dwarfing etc.
Summary of the invention
technical problem
In view of this, the technical problem to be solved in the present invention is, provides a kind of corn field complex weedicide.
solution
In order to solve the problems of the technologies described above, the invention provides a kind of corn field complex weedicide, described corn field complex weedicide comprises nicosulfuron, atrazine, iodine metsulfuron-methyl three kinds of active components, and wherein the weight ratio of nicosulfuron, atrazine, iodine metsulfuron-methyl is 20-50:150-300:1-5.
Preferably, the weight ratio of described nicosulfuron, atrazine, iodine metsulfuron-methyl is 25-35:200-250:1-2.
Preferably, the weight ratio of described nicosulfuron, atrazine, iodine metsulfuron-methyl is 40:209:1.
Preferably, described complex weedicide is oil-suspending agent.
Preferably, described complex weedicide is water dispersible oil-suspending agent.
Preferably, the mass percent of described active component in complex weedicide is 5-70%.
Preferably, the mass percent of described active component in complex weedicide is 25%, the mass percent of described nicosulfuron in complex weedicide is 4%, the mass percent of described atrazine in complex weedicide is 20.9%, and the mass percent of described iodine metsulfuron-methyl in complex weedicide is 0.1%.
beneficial effect
The invention provides a kind of safety, speed is fast, and broad weed-killing spectrum, without the corn field complex weedicide of poisoning.Therefore, Herbicidal combinations preventive effect of the present invention is better than clean property when each component is used alone, and synergistic effect is remarkable, expands control of weeds spectrum, reduces spraying times and consumption, reduce cost accounting, slow down the generation of Weed Resistance, to corn and succession crop safety.The present invention has excellent preventive effect to corn field grassy weed and broad leaved weed, and application prospect is wide.
Embodiment
Example of formulations
Inventor finds, this formula adopts the effect of water dispersible oil-suspending agent (Oil dispersion) better.
Suspending agent refers to the preparation be scattered in the particulate homogenous of less than 4 microns by former for solid pesticide medicine in water, and international code name is SC, also known as dense suspension, and flowable, aqueous suspension, colloidal suspending agent.The solid pesticide and the auxiliary agent process that are insoluble in water are ground, the suspension be dispersed in aqueous medium.Continuous phase is water.Because SC does not have as can dusting problem wet-milling (WP), nonflammable explosive, particle diameter is little, and biologically active is high, and proportion is comparatively large, and packaging volume is less, relatively other formulations of pesticide safety and environmental protections.
Suspending agent is divided into aqueous suspension agent and oil-suspending agent two kinds.Aqueous suspension agent is water as solvent.Oil-suspending agent take oils as primary solvent, not moisture.
Dispersant is lignosulfonates, lignin calcium iodate, ethoxylated dodecyl alcohol sodium sulphate, alkyl how formaldehyde condensate sulfonate, neopelex, lauryl sodium sulfate, alkyl polyoxyethylene ether sulfonate, alkylphenol-polyethenoxy base ether formaldehyde condensation products, alkylphenol-polyethenoxy base ether Nonyl pheno base ether, polyoxyethylene polyoxypropylene base ether block copolymers, pull open powder, polymeric carboxylic salt, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate, polyvinyl alcohol, the naphthalene sulfonate of modification, polycarboxylate, alkylnaphthalene sulfonate, alkylphenol polyoxyethylene, EO/PO block polyether, JFC, pull open powder, polyoxyethylene nonylphenol ether, octyl phenol polyoxy oxyethylene sulfate, aliphatic alcohol sulfate, alkylnaphthalene sulfonate, fatty acid amide N-metilsulfate, aliphatic alcohol polyethenoxy sodium sulphate, fatty acid sulfates, fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, alkyl benzyl dimethyl ammonium chloride, one or more composition in alkyl amine oxide.
Wetting agent is alkyl sulfate, alkylsulfonate, naphthalene sulfonate, sodium lignin sulfonate, fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, short chain EO/PO block polyether, polyoxyethylene nonylphenol ether, nonionic ethoxylates, lauryl sodium sulfate, dodecyl sodium sulfate, TERSPERSE2700, TERSPERSE1004, sodium lignin sulfonate, NNO, polyoxyethylene polyoxypropylene base ether block copolymers, alkylphenol-polyethenoxy base ether phosphate or water-soluble high-molecular compound CMC, PVA one or more composition wherein.
Emulsifier is the compound of one or more anion, non-ionic surface active agent, non-ionic surface active agent is as fatty acid esters of sorbitan, alkylphenol-polyethenoxy polyethenoxy ether, polyoxyethylene alkyl amine etc., anion surfactant, as calcium dodecyl benzene sulfonate, neopelex etc., can be one or more composition wherein.
Thickener is one or more in polyvinyl alcohol, methylcellulose, xanthans, CMC, organobentonite, aluminium-magnesium silicate, arabic acid glue.
Oil-suspending agent is the stable non-aqueous suspension agent be made up with suitable auxiliary agent of former medicine, wherein has at least a kind of composition to be insoluble to non-aqueous media, has allowed a small amount of layering after being long placed in, and gentle agitation or stirring should be even, operable.
OD--water dispersible oil-suspending agent (Oil dispersion), the liquid preparation being suspended in or being partially dissolved in the mixed liquid immiscible with water of stable effective ingredients, uses after dilute with water.
OF-oil-suspending agent (Oil miscible flowable concentrate, oil misciblesuspension), the liquid preparation being suspended in or being partially soluble in the mixed liquid immiscible with water of stable effective ingredients, to use after organic solvent diluting allotment, mainly refer to what some used for finish spraying.Or directly ultra low volume spraying etc.
In oil-suspending agent, the Main Function of emulsifier is the oil phase of emulsification as carrier, certainly also has certain peptizaiton.In order to obtain suspension stability better, add some dispersants sometimes, Main Function is the suspension to former medicine.
Emulsifier can oneself be allocated with monomer, common monomer have 500#, 601, BY series (BY-110, BY-125), EL series (EL-20, EL-40), NP series (NP-4, NP-7) and aliphatic acid polyethenoxy ether, succinic acid phosphoric acid ester, tween, this Pan's series.
In addition also there is corresponding emulsifier special in a lot of auxiliary agent company.Carrier oil phase general mainly plant oil, mineral oils and methyl esters oils.The methyl esters emulsifier YUS-EC2200 of this grease of picture bamboo, mineral oil emulsion agent YUS-135B, vegetable oil emulsifier YUS-110; Methyl esters emulsifier VO/02N, mineral oil emulsion agent MO/P that sieve ground is sub-; Clariant methyl esters emulsifier 1577, B1579, vegetable oil emulsifier 1573; Open up the oily suspension aids SOD received, there is outstanding emulsification, silicone oil and white oil emulsifier C13/3 to methyl esters oil; Methyl esters emulsifier OF-8712-70, OF-7812-70 that Nanjing section is grand; In addition, Hensel steps, wins wound Degussa, Britain's standing grain is large, space, the benefit agriculture of wide source are held up in Jiangsu, star flies a lot of auxiliary agent producers such as chemical industry the outstanding auxiliary agent of corresponding oil.
Dispenser is result after 10 days
Dispenser is result after 20 days
Corn in each process community grows fine, and each process community has no any medicine spot, illustrates that compound drug of the present invention is all safe to crop.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (7)
1. a corn field complex weedicide, is characterized in that, described corn field complex weedicide comprises nicosulfuron, atrazine, iodine metsulfuron-methyl three kinds of active components, and wherein the weight ratio of nicosulfuron, atrazine, iodine metsulfuron-methyl is 20-50:150-300:1-5.
2. corn field complex weedicide according to claim 1, is characterized in that, the weight ratio of described nicosulfuron, atrazine, iodine metsulfuron-methyl is 25-35:200-250:1-2.
3. corn field complex weedicide according to claim 1, is characterized in that, the weight ratio of described nicosulfuron, atrazine, iodine metsulfuron-methyl is 40:209:1.
4. corn field complex weedicide according to claim 1, is characterized in that, described complex weedicide is oil-suspending agent.
5. corn field complex weedicide according to claim 4, is characterized in that, described complex weedicide is water dispersible oil-suspending agent.
6., according to the arbitrary described corn field complex weedicide of claim 1 to 5, it is characterized in that, the mass percent of described active component in complex weedicide is 5-70%.
7. corn field complex weedicide according to claim 6, it is characterized in that, the mass percent of described active component in complex weedicide is 25%, the mass percent of described nicosulfuron in complex weedicide is 4%, the mass percent of described atrazine in complex weedicide is 20.9%, and the mass percent of described iodine metsulfuron-methyl in complex weedicide is 0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410677049.0A CN104396986A (en) | 2014-11-20 | 2014-11-20 | Compounded herbicide used in corn field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410677049.0A CN104396986A (en) | 2014-11-20 | 2014-11-20 | Compounded herbicide used in corn field |
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| Publication Number | Publication Date |
|---|---|
| CN104396986A true CN104396986A (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410677049.0A Pending CN104396986A (en) | 2014-11-20 | 2014-11-20 | Compounded herbicide used in corn field |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1771806A (en) * | 2005-11-10 | 2006-05-17 | 吴永虎 | Herbicide composition specially for corn field and its prepn |
| CN101252836A (en) * | 2005-09-01 | 2008-08-27 | 杜邦公司 | Liquid sulfonylurea herbicide formulations |
-
2014
- 2014-11-20 CN CN201410677049.0A patent/CN104396986A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252836A (en) * | 2005-09-01 | 2008-08-27 | 杜邦公司 | Liquid sulfonylurea herbicide formulations |
| CN1771806A (en) * | 2005-11-10 | 2006-05-17 | 吴永虎 | Herbicide composition specially for corn field and its prepn |
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Application publication date: 20150311 |