CN101946772A - Combined pesticide for controlling rice blast - Google Patents
Combined pesticide for controlling rice blast Download PDFInfo
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- CN101946772A CN101946772A CN2010102943238A CN201010294323A CN101946772A CN 101946772 A CN101946772 A CN 101946772A CN 2010102943238 A CN2010102943238 A CN 2010102943238A CN 201010294323 A CN201010294323 A CN 201010294323A CN 101946772 A CN101946772 A CN 101946772A
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- lentinan
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- kasugarnycin
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Abstract
The invention provides a medicament for controlling crop diseases in the field of agriculture, in particular a combined pesticide for controlling rice blast. The combined pesticide is prepared by mixing 1 to 20 parts of kasugamycin and 0.5 to 10 parts of lentinan. The kasugamycin is matched with the lentinan to control the rice blast, and the combined pesticide is applied to leaves in the rice growth process by stages, can completely inhibit the rice blast and improve antibacterial and antiviral capabilities of rice plants, has the function of improving the quality and yield, and is suitable for controlling the rice blast.
Description
Technical field
What the present invention proposed is the agricultural chemicals that is used for the agriculture field crop disease control, specifically a kind of combined pesticide that is used to prevent and treat rice blast.
Background technology
Rice blast is one of important disease of paddy rice, can cause the underproduction significantly, the underproduction 40%～50% when serious, even No kernels or seeds are gathered, as in a year of scarcity.This disease all has generation in various places, wherein occur as manyly with leaf portion, joint portion, can cause the underproduction in various degree after the generation, and especially panicle blast or joint pest take place early and weigh, can cause dead ears so that has no harvest.At present, rice blast may occur in any zone and any season.
Symptom claims rice blast again, burns pest, the pest of kowtowing.Be distributed in each rice district, the whole nation, main harm blade, stem stalk, fringe portion.Because of harm period, position difference are divided into seedling pest, leaf pest, joint pest, panicle blast, grain pest.Before the seedling pest betide three leaves, due to seed-borne fungi.Sick seedling base portion is greyish black, and the top browning is crispaturaed and dead, and disease portion produced the mould layer of a large amount of grey blacks, i.e. pathogen conidiophore and conidium when humidity was big.The leaf pest can both take place in whole growing.It is heavier to shooting stage harm to tiller.Because weather conditions are different with variety resistance, scab is divided into four types.The chronic type scab begins to produce the dirty-green stigma on leaf, and flaring is shuttle dish spot greatly, and the downright bad line of brown of extension is often arranged.Scab central authorities canescence, the edge brown has faint yellow haloing outward, and blade back has the mould layer of grey, and scab forms irregular big spot more in flakes, and this scab development is slower.The acute scab forms dirty-green subcircular or oval scab on susceptible variety, the blade two sides all produces the mould layer of brown, changes the chronic type scab during morbidity of condition incompatibility into.After the susceptible tender leaf of white point type scab is fallen ill, produce white subcircular stigma, do not produce spore, when sharp its of weather conditions expanded, can transfer the acute scab to.Brown some type scab is many on anti-kind of height or Lao Ye, and the brown point that produces the needle point size only results between vein, less product spore, and this disease also can be fallen ill at positions such as the tip of a leaf, auricle, pulvinus.Be everlasting heading back of joint temperature takes place, and just produces the brown point on the rice joint, after gradually around the joint expansion, make the blackening of disease portion, frangibility.The withered dead ears of formation early take place.Only cause the bending of stem stalk what a side took place.Panicle blast just forms the brown point, makes fringe neck browning after putting exhibition, also causes withered dead ears.The not plump paddy of causing that falls ill evening.Branch stalk or cob are injured and are caused small ear unreal.The grain pest produce the oval or irregular spot of brown, can make the paddy blackening.The clever shell that has is asymptomatic, and the sterile lemma browning of being injured makes seed-borne fungi.
Cause of disease, Phyricularia grisea (Cooke) Sacc. claims grey pears spore=Pyricularia oryae Cav. to claim Magnaporthe grisea, belongs to the Deuteromycotina fungi.It is Magna porthegrisea 9Hebert that condition is arranged) Barrnov. genus Ascomycotina fungi.Do not find as yet under the natural conditions.Conidiophore is branch not, and the 3-5 network of roots is given birth to, stretch out from host's epidermis or pore, and big or small 80-160 * 4-6 (μ m), a tool 2-8 barrier film, base portion expands slightly, and is filbert, and light to colouring, the top is curved, goes up living spore estranged.Conidium is colourless, and foreign pyriform or club shape often have 1-3 barrier film, big or small 14-40 * 6-14 (μ m), base portion has the pin born of the same parents, the upright pipe of sprouting of two teloblasts during sprouting, and the germ tube top produces appresorium, and is subsphaeroidal, dark brown is closely attached to the host, produces to invade in the silk intrusion host tissue.This bacterium can be divided and done 7 groups, 128 biological strains.
Route of transmission and onset condition, germ survives the winter on straw and paddy with conidium and mycelium.Produce conidium next year and borrow wind and rain to propagate in the rice strain, sprout and invade the host, form primary infection focus to adjacent cells expansion morbidity.The conidium that disease portion forms is borrowed wind and rain to propagate and infects.The sowing infected seed can cause the seedling pest.The thermophilic high humidity helps morbidity under rainy, mist, the dew existence condition.8-37 ℃ of mycelial growth temperature limit, optimum temperature 26-28 ℃.10-35 ℃ of sporulation temperature limit, with 25-28 ℃ the suitableeest, relative moisture is more than 90%.Spore germination need have water to exist and continue 6-8 hour.Preference temperature could form appresorium and produce invades silk, penetrates rice strain epidermis, spreads derive nutrients at iuntercellular.A run of wet weather, sunshine deficiency or the time rain when fine, or cloud and mist or dewfall condition are arranged sooner or later, state of an illness expansion rapidly.Varietal resistance is different and different with biological strain because of area, season, the plantation time limit.Indica type variety generally is better than round-grained rice type kind.Same kind is also different in the performance of different growing resistance, and 4 leaf phases of rice shoot, tillering stage and heading stage are easily susceptible, and the morbidity of circle stalk phase is light, and same organ or tissue is organizing young tender phase morbidity heavy.The fringe phase is with beginning during fringe a little less than the disease resistance.Executed the favourable morbidity of nitrogen fertilizer application partially.Discharging water, early or for a long time the deep irrigation root system development is poor, and a little less than the premunition, morbidity is heavy.
Prevent and treat method:
Seed treatment: with 1000 times of liquid of 10%401 antibacterial agents or 2000 times of liquid of 80%402 antibacterial agents, 1000 times of liquid seed soaking of 70% thiophanate methyl (thiophanate-methyl) wetting powder 2 days.With 2% formalin seed soaking 20-30 minute, covered vexed kind 3 hours with film then.
Chemical control: their early stage sprays 1000 times of liquid of 20% tricyclazole (Tricyclazole) wetting powder or with 1000 times of liquid of 40% Isoprothiolane (Fujione) missible oil, 50% carbendazim or 1000 times of liquid of 50% thiophanate-methyl wetting powder, 1000 times of liquid of 50% rice blast peptide wetting powder, 1000 times of liquid of 40% Hinosan emulsion, 500-800 times of liquid of 50% iprobenfos emulsion, 500 times of liquid of 5% octicin solution aqua.Above-mentioned medicament also can add the 40mg/kg kasugarnycin or add the spreader-sticker better effects if.Anti-2-3 time of leaf Wen Yaolian, the fringe pest will focus on to be protected heading stage, particularly booting stage (breaking the tripe phase) and full heading time be to prevent and treat optimum period.
Kasugarnycin, disinfectant use in agriculture.Rice blast on the paddy rice there are excellent preventive effect and therapeutic action.
Chinese: kasugarnycin; Kasugarnycin; (5-amino-2-methyl-6-(2,3,4,5,6-hydroxy-cyclohexyl oxo) tetrahydropyran-3-base) amino-α-IMDA.Kasugamycin; Kasumin; Kasurabcide; Kasumin-bordeaux; The KS fusing point (℃): 236～239 (decomposition); Hydrochloride: 202～204 (decomposition).Pure product are white crystals; Hydrochloride is white needles or flaky crystal, and is pleasantly sweet.
Disinfectant use in agriculture.Rice blast on the paddy rice there are excellent preventive effect and therapeutic action.In rice ear sprouting period and pustulation period dispenser, to solid nothing influence.When control rice blast, chestnut seasonal febrile diseases, working concentration is 40r, as use the 6000r/g wetting powder, every 50g medicinal powder adds water 75kg, sprays about 1 mu, spray medicine when the leaf pest reach 2 grades, should spray once about 7 days after the dispenser first time when being in a bad way, the control panicle blast sprays when going out fringe 1/3rd left and right sides in the rice field, when panicle blast is serious again, except that the dispenser of cut phase, full heading time also will spray medicine one time.The dispenser of can directly dusting of 0.4% pulvis, every mu of consumption 1.5kg is preferably in dispenser when sooner or later dew being arranged, and medicinal powder can be sticked in the rice strain.
Lentinan is the compound that extracts from mushroom fruiting body, and through studies confirm that, application can improve immunity to human body, and the anti-pathogen antiviral effect is also arranged, and therefore can improve the resistance against diseases of paddy rice.
Because kasugarnycin is the biochemistry medicament, though can play the effect of sterilizing and anti-virus, but it is relatively poor to rice plant growth's growth raising resistance effect, and lentinan not only has disease-resistant bacterium and antiviral effect, also have the nutrition rice plant to improve and resist sick invasion and attack and improve immunity, reduce the effect of pathogen hazard.
Therefore, kasugarnycin and lentinan cooperation are used to prevent and treat the problem that rice blast is worth research.
Summary of the invention
In order to utilize the collaborative control of kasugarnycin and lentinan rice blast, the present invention proposes a kind of combined pesticide that is used to prevent and treat rice blast.This combined pesticide cooperates with lentinan by kasugarnycin and acts synergistically, and solves the technical problem of control rice blast.
The scheme that technical solution problem of the present invention is adopted is: be made up of kasugarnycin and lentinan.Its cooperation ratio is kasugarnycin 1-20 part, lentinan 0.5-10 part.
Good effect, the present invention utilizes kasugarnycin to cooperate the control rice blast with lentinan, carries out foliage-spray at growth process of riceplant by stages, can suppress the generation of rice blast fully.And can promote antibiotic, the anti-virus ability of rice plant, play the effect that improves the quality with output.The control that is suitable for rice blast is used.
Embodiment
Combined pesticide is formed: kasugarnycin and lentinan are formed.
The cooperation ratio: press mass ratio, kasugarnycin 1-20 part and lentinan 0.5-10 part are mixed.
The pharmacological action of kasugarnycin: kasugarnycin, disinfectant use in agriculture.Rice blast on the paddy rice there are excellent preventive effect and therapeutic action.
The kasugarnycin day mycin that also troats; (5-amino-2-methyl-6-(2,3,4,5,6-hydroxy-cyclohexyl oxo) tetrahydropyran-3-base) amino-α-IMDA.Kasugamycin; Kasumin; Kasurabcide; Kasumin-bordeaux; KS fusing point: 236～239 ℃ (decomposition); Hydrochloride: 202～204 ℃ (decomposition).Pure product are white crystals; Hydrochloride is white needles or flaky crystal, and is pleasantly sweet.
Kasugarnycin is the bioid medicine of learning to farm, and can produce inhibitory action to the virus of rice blast.So, carry out foliage spray at the different times in paddy growth cycle, can control the breeding and the diffusion of rice blast pathogen, therefore produce the effect of control rice blast.
Kasugarnycin pesticide registration registration working concentration is 6%.
The pharmacological action of lentinan:
Lentinan is the effective active composition that extracts from the quality xianggu fruit body, the main component of mushroom is polysaccharose and unsaturated fatty acid, the ergosterol and the fungisterol that also contain a large amount of changed into vitamin Ds wherein have amino acid and vitamin B1, B2 and mineral salt and the raw fiber etc. of 7 kinds of needed by human such as isoleucine, lysine, phenyl alanine, methionine, threonine, valine.Can regulate through the lentinan of hot water extracting has the T of immunologic function cytoactive in the human body, can reduce the ability of methyl cholanthrene induced tumor.Mushroom has had strong inhibitory effects to cancer cell, is 97.5% to the inhibiting rate of small white mouse sarcoma 180, is 80% to the inhibiting rate of ehrlich carcinoma.Mushroom also contains double stranded RNA, can induce the generation interferon, has disease-resistant effect.Lentinan have disease-resistant bacterium and viral, antitumor, strengthen immune function of human body and stimulate interferon formation fast; Promote the utilization of human body to calcium; Correct the human chitinase deficiency disease.
Some enterprise according to the pharmacological action of lentinan, has carried out effect experiment at phytopathogen and virus disease aspect preventing and treating, and has obtained effect, and some enterprise has carried out agriculture chemical registration.
The enterprise that now lentinan is carried out agriculture chemical registration has:
Anyang, the Henan Province magnificent chemical industry Co., Ltd of shaking, the registration working concentration is 0.5% lentinan;
The rich agricultural science and technology of Heilongjiang Province's the earth development corporation, Ltd., the registration working concentration is 0.5% lentinan;
Liaoning Province Daliang Guangyin Biological Pesticide Co., Ltd., the registration working concentration is 0.5% lentinan;
Anyang, Henan Province state rich agricultural chemicals Co., Ltd, the registration working concentration is 0.5% lentinan;
Nantong, Jiangsu Province refreshing rain environment friendly agricultural Co., Ltd, the registration working concentration is 0.5% lentinan;
The Beijing YanHuaYongLe pesticide Co., Ltd, the registration working concentration is 0.2% lentinan;
Heilungkiang Suihua agricultural chemicals Co., Ltd, the registration working concentration is 0.5% lentinan;
Beijing San Pu hundred grass green galenical Co., Ltds, the registration working concentration is 0.1% lentinan;
Shandong Shengpeng Pesticide Co., Ltd, the registration working concentration is 10% lentinan;
The fertile Co., Ltd of Shanxi science-star's agricultural chemicals leaf, the registration working concentration is 0.5% lentinan.
Lentinan is tested the effect of rice blast morbidity influence:
Laboratory experiment:
The antibacterial culture experiment of A, rice blast: intercept diseased tissue from the paddy rice diseased plant, put into culture dish, under the situation of simulating nature state temperature and humidity, cultivate, after its propagation enlarges, on cenobium, click and enter 0.5% the lentinan aqueous solution, continue to cultivate, by observing, the cenobium mycelium of the contact lentinan aqueous solution stops growing, and withered disappearing, and does not touch the cenobium continued growth breeding of the lentinan aqueous solution.The proof lentinan has inhibitory action to the pathogenic bacteria of rice blast.
The antibiotic potted plant experiment of rice blast during B, the paddy growth: the rice paddy seed that will touch the rice sheath blight disease diseased plant is planted in the nutritive cube, wherein, three alms bowls are control group, three alms bowls are organized for being subjected to examination, the control group self-sow, the rice paddy seed that planted by the examination group is soaked seed with 1% the lentinan aqueous solution, carries out lentinan aqueous solution of foliage spray after emerging, then, each sprays once tillering stage, shooting stage and booting stage.By observing, pathological tissues just took place after the rice plant of tillering stage of control group and shooting stage, plant strain growth is unhealthy and strong, and not heading, and dead seedling has appearred in the later stage, and is subjected to the examination group that stiff reaction does not take place, until the knot of can normally earing.The proof lentinan can be prevented and treated rice blast.
Lentinan is tested the effect of rice blast morbidity influence:
Beginning to spray experiment at seeding stage, is control group with not fragrant mushroom polysaccharide, and the foliage spray lentinan is made experimental group.
Spraying concentration chooses 0.5%.
Test 667 square metres of areas for every group, every group 30 row, for 3 groups of examinations, 3 repetitions.
Experimental technique: in identical rice cropping ground, 15 behavior control groups, 15 behavioral experiment groups.
Carry out foliage spray respectively in rice seedling phase, tillering stage, shooting stage, bloom early stage, heading stage, pustulation period.
Effect observation: by pursuing the strain observed and recorded, control group rice blast morbidity strain is 3%, experimental group morbidity 0.01%, and illness is lighter.Illustrate that lentinan not only can suppress the invasion and attack of germ and virus, but also improved the antibiotic and viral ability of rice plant.
The proof lentinan can play the effect of control to rice blast.
Analyze its reason, lentinan to human body can produce antibiotic and viral, antitumor, strengthen immune function of human body and stimulate interferon to form fast; Promote the utilization of human body to calcium; Correct the human chitinase deficiency disease.And plant is had antibiotic and viral, raise immunity and the stimulation interferon forms too; Promotion is to the utilization of calcium; Correct the effect of enzyme deficiency disease.
The application experiment of combined pesticide control rice blast of the present invention:
With mass ratio, get 2 kilograms of kasugarnycin, 0.5 kilogram of lentinan is dissolved in 100 kg of water, is mixed with mass percent and is 2.5% the combined pesticide aqueous solution, sprays soup as rice leaf.
Carry out foliage spray respectively in rice seedling phase, tillering stage, shooting stage, bloom early stage, heading stage, pustulation period.Organize in contrast with the examination group that is subjected to of not spraying the combined pesticide aqueous solution, be subjected to the examination group as experimental group with what spray the combined pesticide aqueous solution.
Spraying concentration is 2.5%.
Test 667 square metres of areas for every group, be divided into 30 and go, wherein control group 15 is gone, and experimental group 15 row are for trying 3 groups, 3 repetitions.
Experimental technique: gradation is carried out the paddy rice seedling and is carried out the liquid foliage-spray.
Control group does not carry out foliage spray combined pesticide liquid.
Experimental group foliage spray combined pesticide liquid.
Spray once respectively in rice seedling phase, tillering stage, shooting stage, the early stage of blooming, heading stage, pustulation period.
Effect observation: the control group rice blast incidence of disease is 5%, and wherein total crop failure is 3%.And experimental group is not found diseased plant.Proof, kasugarnycin and lentinan combined pesticide have produced tangible control efficiency to rice blast.
In the combined pesticide, kasugarnycin cooperates the ratio experiment with lentinan:
By the cooperation ratio experiment of kasugarnycin and lentinan, reaching a conclusion is: it is kasugarnycin 1-20 part that suitable cooperation ratio is arranged, lentinan 0.5-10 part.
Because kasugarnycin has carried out agriculture chemical registration, proving has preventive and therapeutic effect to vegetative bacteria and virus, so, do not repeat application experiment again.
Statistical effect:
By of the spray use of simple lentinan in the rice seedling phase, prove and can reduce the incidence of disease, and kasugarnycin and lentinan are used, can reach that to reduce the incidence of disease be 100% effect.
Overall merit:
Be used experiment by lentinan and kasugarnycin and lentinan, prove that this combined pesticide has produced synergy, rice blast is had control efficiency, especially spray the generation that can suppress rice blast fully in the gradation of paddy growth cycle.
Claims (1)
1. combined pesticide that is used to prevent and treat rice blast is characterized in that:
Medicine is formed: kasugarnycin and lentinan;
Cooperation ratio: press mass ratio, by forming kasugarnycin 1-20 part and the mixing of lentinan 0.5-10 part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102943238A CN101946772A (en) | 2010-09-28 | 2010-09-28 | Combined pesticide for controlling rice blast |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102943238A CN101946772A (en) | 2010-09-28 | 2010-09-28 | Combined pesticide for controlling rice blast |
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| CN101946772A true CN101946772A (en) | 2011-01-19 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715158A (en) * | 2012-06-29 | 2012-10-10 | 青岛星牌作物科学有限公司 | Sterilization composition containing cyazofamid and kasugamycin and application thereof |
| CN103609561A (en) * | 2013-12-06 | 2014-03-05 | 郭红甫 | Rice blast prevention and control insecticide |
| CN105746519A (en) * | 2016-04-08 | 2016-07-13 | 广西南宁益土生物科技有限责任公司 | Pesticide composition containing fenoxanil and fungous proteoglycan |
| CN106538619A (en) * | 2016-11-08 | 2017-03-29 | 佛山市飞时达新材料科技有限公司 | A kind of biological pesticide and its application process of preventing and treating rice blast |
| CN107087611A (en) * | 2017-05-08 | 2017-08-25 | 广西南宁益土生物科技有限责任公司 | A kind of bactericidal composition containing Chinese yam polysaccharide and zineb |
| CN107535529A (en) * | 2017-07-27 | 2018-01-05 | 张银花 | A kind of agriculturally useful compositions for preventing and treating bacterial leaf streak of rice |
-
2010
- 2010-09-28 CN CN2010102943238A patent/CN101946772A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715158A (en) * | 2012-06-29 | 2012-10-10 | 青岛星牌作物科学有限公司 | Sterilization composition containing cyazofamid and kasugamycin and application thereof |
| CN103609561A (en) * | 2013-12-06 | 2014-03-05 | 郭红甫 | Rice blast prevention and control insecticide |
| CN103609561B (en) * | 2013-12-06 | 2015-01-14 | 郭红甫 | Rice blast prevention and control insecticide |
| CN105746519A (en) * | 2016-04-08 | 2016-07-13 | 广西南宁益土生物科技有限责任公司 | Pesticide composition containing fenoxanil and fungous proteoglycan |
| CN106538619A (en) * | 2016-11-08 | 2017-03-29 | 佛山市飞时达新材料科技有限公司 | A kind of biological pesticide and its application process of preventing and treating rice blast |
| CN107087611A (en) * | 2017-05-08 | 2017-08-25 | 广西南宁益土生物科技有限责任公司 | A kind of bactericidal composition containing Chinese yam polysaccharide and zineb |
| CN107535529A (en) * | 2017-07-27 | 2018-01-05 | 张银花 | A kind of agriculturally useful compositions for preventing and treating bacterial leaf streak of rice |
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Application publication date: 20110119 |