CN103070196A - Ternary efficient bactericide for rice in seedling stage - Google Patents
Ternary efficient bactericide for rice in seedling stage Download PDFInfo
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- CN103070196A CN103070196A CN2012105362974A CN201210536297A CN103070196A CN 103070196 A CN103070196 A CN 103070196A CN 2012105362974 A CN2012105362974 A CN 2012105362974A CN 201210536297 A CN201210536297 A CN 201210536297A CN 103070196 A CN103070196 A CN 103070196A
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Abstract
The invention relates to a ternary efficient bactericide for rice in the seedling stage. The ternary efficient bactericide for rice in the seedling stage is a wettable pulvis prepared through mixing a ternary efficient bactericide, rooting powder, a surfactant and a plurality of trace elements, the ternary efficient bactericide comprises thiram, metalaxyl and fenaminosulf, and the surfactant is a wetting agent, a dispersant and a sustained release agent. The ternary efficient bactericide for rice in the seedling stage, which is a ternary complex formulation product having a substantial synergistic effect, has the advantages of disease control, simultaneous seedling emergence, root growth promotion, seedling rate improvement, use convenience, low cost, effect ensure through momentary preparation, seed dressing use or spray use, no appearance of a bud burning phenomenon, and safe and reliable use.
Description
Technical field
The present invention relates to a kind of rice seedling ternary efficient germicide.
Background technology
During rice transplanting, the diseases such as rice seedling green grass or young crops is withered, vertical withered, root-rot, seedling rot often appear easily, for preventing the generation of these diseases, a lot of rice seedling bactericide are arranged on the market, but all there are a lot of shortcomings in these bactericide: (1) bactericide is binary built, complementary poor, make seedling pesticide resistance occur easily; (2) acting surface of bactericide generation is little, and absorption pattern is single, and pesticide supplying effect is not good; (3) the kind clothing agent formulation of these bactericide mostly is suspension seed-coating agent, easily precipitates, active decline; (4) this bactericide does not all contain little fertilizer and the composition of taking root, and can't play the effect in strong sprout of strong root, can't guarantee the transplanting in strong sprout of strong root; (5) this bactericide drug cost is high.
Wetting powder is to use the most in the pesticidal preparations to make things convenient for, be beneficial to most Crop, technology maturation, time-honored basic formulation.
Summary of the invention
The purpose of this invention is to provide a kind of rice seedling ternary efficient germicide, the deficiency that exists to overcome at present existing bactericide.
The objective of the invention is to be achieved through the following technical solutions:
A kind of rice seedling ternary efficient germicide, the wetting powder that described bactericide is formed by ternary efficient germicide, root-inducing powder, surfactant and various trace elements mixed preparing, described ternary efficient germicide is tmtd, metalaxyl and fenaminosulf, and described surfactant is wetting agent, dispersant and sustained release agent.
Preferably, described ternary efficient germicide total content is 40.0%, and the root-inducing powder total content is 0.1 ~ 2.0%, and the dispersant total content is 0.3 ~ 10.0%, and the wetting agent total content is 0.3 ~ 10%, and the sustained release agent total content is 0.1 ~ 5.0%, and trace element complements to 100%; Described tmtd proportion is 1.0 ~ 40.0%, and the metalaxyl proportion is 1.0 ~ 25.0%, and the fenaminosulf proportion is 1.0 ~ 25.0%, and above ratio all refers to mass percent.
Preferably, described root-inducing powder consists of indolebutyric acid, methyl α-naphthyl acetate, lauryl sodium sulfate, white carbon and soluble starch; Described indolebutyric acid proportion is 2 ~ 20%, and the methyl α-naphthyl acetate proportion is 2 ~ 20%, and the lauryl sodium sulfate proportion is 1 ~ 10%, and the white carbon proportion is 5 ~ 30%, and the soluble starch proportion is 9 ~ 20%, and above ratio all refers to mass percent.
Preferably, described trace element consists of boric acid, zinc sulphate, sodium humate and humic acid potassium; Described boric acid proportion is 0.2 ~ 10.0%, and the zinc sulphate proportion is 0.5 ~ 20.0%, and the sodium humate proportion is 0.5 ~ 20.0%, and the humic acid potassium proportion is 8.0 ~ 20.0%, and above ratio all refers to mass percent.
Beneficial effect of the present invention is: (1) this product is the ternary built product, the excellent scarce complementation of active ingredient, and drug effect is remarkable; (2) this product promotes root growth, and Bai Genduo can promote root growth and the generation of tillering, and plays the effect in strong sprout of strong root; (3) for guaranteeing drug effect, this product can be prepared at any time, not only can use also sprayable use by seed dressing and coating; (4) this bactericide drug cost is low, and control efficiency is good, and uses safety; (5) use this product can significantly improve the rice shoot well developed root system, improved annual production, remarkable in economical benefits can add.
Description of drawings
The below is described in further detail the present invention with reference to the accompanying drawings.
Fig. 1 is the technological process of production block diagram of the described a kind of rice seedling ternary efficient germicide of the embodiment of the invention;
Fig. 2 is the result of the test figure one of the embodiment of the invention two described a kind of rice seedling ternary efficient germicides;
Fig. 3 is the result of the test figure two of the embodiment of the invention two described a kind of rice seedling ternary efficient germicides.
Embodiment
The described a kind of rice seedling ternary efficient germicide of the embodiment of the invention is comprised of former medicine, root-inducing powder, surfactant (wetting agent, dispersant and sustained release agent), trace element etc., and pulverizes the powder preparation that reaches certain fineness; Wherein used wetting agent model is W2001, and the dispersant model is D2002, and sustained release agent is carboxymethyl cellulose.In this product, metalaxyl has interior suction conductive performance, the institutes such as downy mildew, phytophthora and imperfect fungus is caused the downy mildew, epidemic disease, damping off etc. of crop effectively; Fenaminosulf is to have the infiltrative bactericide of interior suction, and the damping off that the sickle-like bacteria by Fungi Imperfecti is caused has special efficacy, and crop root is had growth promoting effect, and crop seedling is had the promotion growth; Tmtd is the broad spectrum protection bactericide, is mainly used in control and plants biography and soil-borne disease, for the crop damping off of infection is effective by planting biography and soil biography.But tmtd is difficult to enter in the germ somatic cell of crop infection without interior absorption; A kind of single dose wherein more than using separately, can only prevent and treat a certain germ, and acting surface, the mode of action are single, often do not have the effect of desirable sterilization, three kinds of effective ingredients combine according to rational ratio, have complementary advantages, from different perspectives germ is effected a radical cure, greatly increased bactericidal effect.Tmtd is the bio-energy inhibitor, the energy strong inhibition relies on the sprouting of the spore of energy metabolism, and metalaxyl, two systemic fungicides of fenaminosulf are arranged in this formula for a product, also has micronutrient boron, these active matter mass-energy are improved the permeability of cell wall, thereby tmtd is entered in the germ body in a large number, strengthened significantly its bactericidal effect.
During concrete the use, with product dilute with water 800-1000 doubly after, form stable, sprayable suspension, can reach larger uniform fold crop after the dispenser, make crop root and blade anyway face all can absorb fully, so application point is many, drug effect is conclusive, if morbidity can be sprayed once again after 10 days, can play therapeutic action.The height of the quality of pesticide wettable, particularly fineness and suspensibility index, not only relevant with prescription, and often be subjected to the restriction of process equipment, processing technology.Processing technology and equipment itself must be selected suitable process route for the physicochemical property of different product also because product category is different and different.
As shown in Figure 1, the processing technology of rice seedling ternary bactericide provided by the invention comprised for 5 steps: premixed, pulverizing, again mixing, levigate and rear mixing, and concrete steps are as follows:
(1) first with three kinds of active ingredient: carry out premixed in the input mixers such as root-inducing powder, surfactant and trace element;
(2) and then enter and carry out ultra-fine grinding in the airslide disintegrating mill, material is mixed fully, (the wetting powder fineness is an important indicator of properties of product quality, so crushing process is an important step of wetting powder process);
(3) fineness being reached the standard-required material transfers in the double worm mixer and again mixes;
(4) enter again flour mill through mixed material and grind, levigate; And
(5) composition after levigate carries out rear mixing (quality of rear mixed effect directly affects the uniformity of wetting powder effective ingredient, and then affects drug effect) at last.
Can notify the laboratory to carry out sample analysis after five step process are all finished, if product reaches standard-required, can pack warehouse-in; To return to the first step if any substandard product, again process processing.
Embodiment one bactericide indoor pharmacodynamic test
(1) test medicine: metalaxyl, tmtd and fenaminosulf.
(2) test material and method: for the selection of examination bacterial classification and medium.
Provided by Shenyang Chemical Engineering Inst's pesticide bioassay center bactericide group for the examination bacterial classification, diseased plant is picked up from Shenyang City, paddy rice main producing region, Liaoning Shujiatun District, through the Rhizoctonia solani Kuhn purifying bacterial strain that separation, cultivation and purifying obtain, medium is PDA potato agar medium.
(3) composite reagent proportion design
Composite I: metalaxyl: tmtd: fenaminosulf=2:2:1;
Composite I: metalaxyl: tmtd: fenaminosulf=1:2:1;
Composite I: metalaxyl: tmtd: fenaminosulf=1:2:2.
(4) experimental concentration design
The concentration for the treatment of of three built agents and tmtd is 5.0ppm, 2.5ppm, 1.25ppm, 0.625ppm, five concentration of 0.3125ppm, the concentration for the treatment of of metalaxyl is 400ppm, 200ppm, 100ppm, 50ppm, 25ppm, the concentration for the treatment of of fenaminosulf is 50ppm, 25ppm, 12.5ppm, 6.25ppm, 3.125ppm, other establishes the not blank of adding medicine, totally 31 processing, every processing repeats for 4 times.
(5) test method
Solvent PDA medium is cooled to 60 ℃ ~ 70 ℃, adds quantitative pharmacy by top set concentration, make the toxic medium that contains different doses, after it fully cooled off, the inoculation diameter was the Rhizoctonia solani Kuhn bacterium sheet of 0.5cm, places in the insulating box and cultivates.
(6) condition of culture
The incubator condition setting: temperature is 25 ℃.
(7) investigation and computational methods
In incubator, cultivate after 24 hours and investigate, measure respectively the Rhizoctonia solani Kuhn colony growth diameter of each processing during investigation, and calculate bacteriostasis rate, press the EC that bacteriostasis rate calculates three built agents and three single doses
50, calculated again the co-toxicity coefficient of three built agents by Sun-Johnson toxicity index computing method.
(8) result of the test is as shown in the table:
Result of the test shows: metalaxyl, tmtd and three built agents of fenaminosulf, and composite II, composite III have synergistic effect, and composite I is summation action.
Drawn by test: (1) metalaxyl, tmtd and fenaminosulf built agent have good inhibitory action to the Rhizoctonia solani Kuhn that causes rice seedling blight, the EC of three compound proportions
50Be respectively 1.504ppm, 0.515ppm, 1.012ppm, with the suitable (EC of effect of single dose tmtd
50Be 0.597ppm), obviously be better than two other single dose metalaxyl, fenaminosulf (EC
50Be 210.024ppm and 26.520ppm); (2) co-toxicity coefficient of metalaxyl, tmtd and fenaminosulf built agent (1:2:1,1:2:2) is greater than 100, synergistic effect is arranged, metalaxyl, tmtd, fenaminosulf proportioning (1:2:1) synergistic effect are remarkable, and metalaxyl, tmtd, fenaminosulf proportioning (2:2:1) show as summation action; (3) this experiment is to causing a kind of infective pathogen bacterium measurement result of rice seedling blight, the pathogenic bacteria that cause rice seedling blight also have Fusarium, cause in addition the pythium rot that also has of the dead seedling of rice seedling, seedling rot, its Main Pathogenic Bacteria is continuous rotten the genus and pythium, metalaxyl, fenaminosulf have preferably preventive and therapeutic effect to it, therefore, also should estimate according to field test results synergy, the spectrum of metalaxyl, tmtd and fenaminosulf built agent.
The report of embodiment two pesticide field efficacy medicine tests
(1) experimental field basic condition:
For studying thing: paddy rice.
Controlling object: rice seedling blight.
Test soil pH value: 7.6.
The content of organic matter: 2.2%.
(2) experimental design and arrangement
Test medicine: 40% metalaxyl tmtd fenaminosulf wetting powder.
The contrast medicament: but 50% tmtd wet-milling; But 25% metalaxyl wet-milling; But 55% fenaminosulf wet-milling.
The gross area experimental field: 84 square metres.
Application method: spray-on process.
Amount of liquid medicine: 0.51 kilogram/M
2
Crop growth phase during dispenser: 1 heart stage of paddy rice 1 leaf.
(3) investigation content and method
Drug effect: investigation on May 15 incidence before transplanting, 3 points are got in every residential quarter, and 0.04 square metre every, investigate total strain number and morbidity strain number, calculate morbidity strain number and control efficiency, the result is analyzed.
Safety: note observing the rice growth situation and having or not poisoning to produce investigation on May 15 seedling quality, record plant height, leaf age, neck breadth and hundred strain fresh weights after the dispenser.
(5) result of the test as shown in Figures 2 and 3.
Attached: computing formula is as follows:
Drawn by test: (1) 40% metalaxyl tmtd fenaminosulf wetting powder is used for the paddy seedbed damping off of preventing and treating, every square metre of dosage 0.3 gram, 0.4 gram, 0.5 gram control efficiency are 92.8%, 99.5%, 100%, contrast medicament metalaxyl control efficiency is 89.3%, the tmtd control efficiency is 89.4%, and the fenaminosulf control efficiency is 87.9%.Analysis of variance shows that 0.4 gram of 40% metalaxyl tmtd fenaminosulf wetting powder, 0.5 gram difference are not remarkable, is better than significantly 0.3 gram, is better than extremely significantly the contrast medicine, as shown in Figure 2; Control efficiency difference is not remarkable between (2) 40% metalaxyl tmtd fenaminosulf wetting powder 0.4 gram, 0.5 gram, is better than significantly 0.3 gram treatment region, and recommended dose is every square metre 0.4 gram; (3) 40% metalaxyl tmtd fenaminosulf wetting powder is used for paddy seedbed control rice seedling blight, and in 1 heart stage of paddy rice 1 leaf, premorbid adopts the spray-on process dispenser, can reach good control efficiency; Normal through observing the rice seedling growth in (4) 40% the metalaxyl tmtd fenaminosulf wetting powder treatment region, have no poisoning, all be higher than the space management district through investigation leaf age, neck breadth and fresh weight, as shown in Figure 3.
Brief summary: but 40% metalaxyl tmtd fenaminosulf wetting powder effectively preventing rice seedling blight, using dosage is every square metre 0.4 gram, adopts the spray-on process dispenser in paddy rice 1 leaf 1 heart stage premorbid, growth has no adverse effects to rice seedling, has no poisoning.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, all drops within protection scope of the present invention.
Claims (7)
1. rice seedling ternary efficient germicide, it is characterized in that: described bactericide is the wetting powder that ternary efficient germicide, root-inducing powder, surfactant and various trace elements mixed preparing form, described ternary efficient germicide is tmtd, metalaxyl and fenaminosulf, and described surfactant is wetting agent, dispersant and sustained release agent.
2. rice seedling ternary efficient germicide according to claim 1, it is characterized in that: described ternary efficient germicide total content is 40.0%, the root-inducing powder total content is 0.1 ~ 2.0%, the dispersant total content is 0.3 ~ 10.0%, the wetting agent total content is 0.3 ~ 10%, the sustained release agent total content is 0.1 ~ 5.0%, and trace element complements to 100%, and above content is mass content.
3. rice seedling ternary efficient germicide according to claim 1, it is characterized in that: described tmtd proportion is 1.0 ~ 40.0%, the metalaxyl proportion is 1.0 ~ 25.0%, and the fenaminosulf proportion is 1.0 ~ 25.0%, and above ratio all refers to mass percent.
4. rice seedling ternary efficient germicide according to claim 1 and 2 is characterized in that: described root-inducing powder consist of indolebutyric acid, methyl α-naphthyl acetate, lauryl sodium sulfate, white carbon and soluble starch.
5. rice seedling ternary efficient germicide according to claim 4, it is characterized in that: described indolebutyric acid proportion is 2 ~ 20%, the methyl α-naphthyl acetate proportion is 2 ~ 20%, the lauryl sodium sulfate proportion is 1 ~ 10%, the white carbon proportion is 5 ~ 30%, the soluble starch proportion is 9 ~ 20%, and above ratio all refers to mass percent.
6. rice seedling ternary efficient germicide according to claim 1 and 2 is characterized in that: described trace element consist of boric acid, zinc sulphate, sodium humate and humic acid potassium.
7. rice seedling ternary efficient germicide according to claim 6, it is characterized in that: described boric acid proportion is 0.2 ~ 10.0%, the zinc sulphate proportion is 0.5 ~ 20.0%, the sodium humate proportion is 0.5 ~ 20.0%, the humic acid potassium proportion is 8.0 ~ 20.0%, and above ratio all refers to mass percent.
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Cited By (3)
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| CN104045457A (en) * | 2014-06-17 | 2014-09-17 | 烟台新华测土配肥有限公司 | Sterilizing rooting agent and preparation method thereof |
| CN106278600A (en) * | 2016-08-12 | 2017-01-04 | 董向波 | A kind of preparation method of multi-Functional Fertilizers |
| CN110214779A (en) * | 2019-06-26 | 2019-09-10 | 江西省农业科学院植物保护研究所 | A kind of bactericidal composition containing metalaxyl and fenaminosulf |
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| CN110214779A (en) * | 2019-06-26 | 2019-09-10 | 江西省农业科学院植物保护研究所 | A kind of bactericidal composition containing metalaxyl and fenaminosulf |
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Application publication date: 20130501 |