CN102845432B - Rice seed coating agent - Google Patents
Rice seed coating agent Download PDFInfo
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- CN102845432B CN102845432B CN201210372607.3A CN201210372607A CN102845432B CN 102845432 B CN102845432 B CN 102845432B CN 201210372607 A CN201210372607 A CN 201210372607A CN 102845432 B CN102845432 B CN 102845432B
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Abstract
The invention relates to the field of seed treating agents, in particular to a rice seed coating agent, which comprises the following raw materials in parts by weight: 0.2-0.3 part of tebuconazole, 1-2 parts of dispersing agent, 5-7 parts of film forming agent, 0.4-0.6 part of thickening agent, 2-4 parts of anti-freezing agent, 1-3 parts of warning color, 0.5-1 part of defoaming agent and 80-90 parts of water, wherein the pH (potential of hydrogen) is 6-7. The seedling protection rice seed coating agent provided by the invention has the characteristics of good film forming performance, long efficacy duration, good efficacy, stable efficacy, high safety for rice, convenience in use, simplified agricultural operation and the like, other chemicals are not needed to be added and stirred during rice seed soaking, rice seeds can be directly sown without accelerating germination after rice seed soaking and germination acceleration, bed soil is not needed to be sterilized, disease preventing chemicals are not needed to be sprayed at a seedling stage, and the existing problem that rice seedling diseases and pesticide hazards frequently occur because pesticides are disorderly used in a large scale during production, the operation is cockamamie to conduct and the operation quality is poor is solved.
Description
Technical field
The present invention relates to seed treatment field, more specifically relate to a kind of dressing agent for rice.
Background technology
Damping off and bakanae disease are the Major Diseases of rice seedling.Damping off is mainly because low temperature is how due to the many factors such as wet, the temperature difference is large, soil meta-alkali, illumination is not enough seeding quantity is excessive, rice shoot is thin and delicate.Rice seedling blight can be divided into two types the cause of disease, and the one, fungoid damping off, the 2nd, physiological damping off, also claims bacterial wilt.
(1) fungoid damping off is to endanger by fungi the infectious disease causing, due to seed or bed soil disinfection not thorough, make a soil or seed-borne fungi, in addition the bad and miscarriage of the growing environment of seedling, causes seedling growth unhealthy and strong, and premunition weakens, germ is taken advantage of a weak point in opponent's defence and invades, and causes morbidity.
(2) physiological damping off also claims bacterial wilt, be due to bad external environmental condition and control measures improper, make the excessive growth of seedling cauline leaf, root system development is bad, Water Physiology imbalance after ventilation hardening, root water uptake can not meet blade transpiration needs the requirement of water, makes the serious dehydration of blade, the physiological disturbance causing.
Fungoid and physiological damping off often occur on producing simultaneously.Physiological is stood the withered rear base portion without putrefaction of withered rice shoot, can uproop and not fracture; Fungoid damping off, at the raw hygrophanous brown point of rice shoot base portion fecund, expands and rots later, and on rice shoot base portion and surrounding soil, grows pink or white mould layer, while lifting seedlings, fractures from base portion.
The control of fungoid damping off
The one, before sowing, with medicament is processed seed and seedling plate is carried out disinfection: seed rice will first be basked seeds and choose seeds, then with medicament sterilization being disinfected as last; When seedling plank bed soil disinfection is seedling, every square metre is watered 3-5 kilogram with transplanting clever 1-2 milliliter, when use, base fertilizer can be dissolved in water together, stir, then medicament evenly be watered on bed soil, broadcast seed blinding, or add water 3-5 kilogram and pour prior to seeding seedling bed with 2 grams of 50% fenaminosulf; Prevent and treat with transplanting spirit or fenaminosulf spraying again in rice shoot 1-2 leaf phase or their early stage.
The control of physiological damping off
Must take comprehensive preventive health measures, one will reduce seeding quantity, every square metre of seeding in nursery bed 250～300g.Two will take the big-and-middle canopy of high platform to grow seedlings, and 50cm above ground level is wanted in seedbed, reduce bed soil moisture, improve the temperature of bed soil.Three when will grow seedlings in saline land, and seedbed will arrange separation layer, with covering 2～3cm Nutrition Soil on the special woven cloth of paddy rice or punching plastic sheeting for farm use, prevents that the accumulation of salt in the surface soil from can improve again ground temperature.Four will strictly control nursery stage temperature, and day temperature should be controlled at 20～28 DEG C, and be 10～15 DEG C night.Five want seedling bed regulating acid, for seedling growth is created optimum PH, the native pH value of bed are controlled to 415～515.Growing seedlings on the basis of acid adjustment prior to seeding in saline land, also should carry out acid adjustment in seedling stage, waters 500 times of sulfuric acid water in the 115 leaf phases of paddy rice, prevents the accumulation of salt in the surface soil.Six will carry out foliar spray with " root-inducing powder " liquid at bacterial wilt their early stage, promote paddy rice fast root of hair, multiple to prevent that damping off from occurring and spreading.
Bakanae disease of rice claims again excessive growth disease, and sick grain is broadcast and often do not germinateed and maybe can not be unearthed afterwards.The disease of falling ill seedling stage seedling is thinner and taller than strong seedling, and blade leaf sheath is elongated, and leaf look yellowish, and root system development is bad, and the sick seedling of part is dead before transplanting.On withered seedling, there is light red or white mould powder, i.e. the conidium of pathogen.Honda morbidity internode obviously extends, and joint portion often has bending to be exposed to outside leaf sheath, and the contrary raw most adventitious fiber roots of bottom stipes, tiller and tiller less or not.Strip off leaf sheath, has dun streak on stem stalk, cut the visible white spider's thread shape mycelia of disease stem open, and later plant is withered gradually.When high humidity, withered diseased plant surface covers with filbert or white powder mustiness thing, and the later stage, raw black point was germ softgel shell.Sick light heading ahead of time, fringe shape is little and unreal.Heading stage, grain also can be injured, and serious browning can not be solid, and the raw pale red of clever shell crevice place is mould, gently reveal any symptoms not of disease, but inner existing mycelia hides.
Infected seed and sick straw are this pathogenetic primary source of infection.Conidium when seed soaking on infected seed pollutes disease-free seed and infects.The key of bakanae disease control is to do seed disinfection well.Soak seed 5～7 days under 10～15 DEG C of room temperature conditions with disliking 200 times of liquid of seedling spirit.Also have 400 times of immersion kinds of 45% ambam, the seed soaking of 50% 250 times of Emiaodis, 45% " 901 " 500 times of immersion kind, 20% press down two 200～250 times of immersion kinds of seedling, 20% 200～250 times of bronopols seed soaking etc.
In a word, the result of study of controlling about damping off, bakanae disease both at home and abroad is at present mainly the method that adopts chemical control, traditional bakanae disease of rice, the control of damping off, conventionally adopt medicament seed soaking, bed soil disinfection, acid adjustment and spray the measures such as medicine seedling stage, complex operation, labour intensity is large, and control efficiency is poor; Current existing dressing agent for rice easily comes off at immersion process Chinese medicinal film, and the poor and medicament of drug effect runs off and on the contrary farmland polluted, and affects rice seed germination.Therefore, research and develop a kind of medicine film difficult drop-off and can improve again the seed coat agent of preventing and treating the rice seedling disease such as damping off, malignant disease disease, to cultivating strong seedling, promoting that Rice Production has great importance.
Summary of the invention
The present invention provides the dressing agent for rice of a kind of efficient, safety, saving of labor, easy operating in order to address the above problem.
The composition of raw materials of described dressing agent for rice comprises following component: count by weight, 0.2～0.3 part of Tebuconazole, dispersant 1-2 part, film forming agent 5-7 part, thickener 0.4-0.6 part, antifreezing agent 2-4 part, warning colouration 1-3 part, defoamer 0.5-1 part, water 80-90 part, pH=6-7.
Described defoamer is Tween 80, linseed oil or emulsification mineral.
Described dispersant is rope uncle SOPA, calcium dodecyl benzene sulfonate or sodium butylnaphthalenesulfonate.
Described warning colouration is rhodamine toner.
Described film forming agent is sodium alginate or polyvinyl alcohol.
Described thickener is for having xanthans or hydroxyethylcellulose.
Described antifreezing agent is ethylene glycol or glycerine.
Described pH regulates with citric acid or sodium hydrogen phosphate.
Use the technological process of dressing agent for rice dressing to be: selected seed rice, seed dressing and coating, medicine film solidify, static state is soaked seed, vernalization is sowed or not vernalization is directly sowed.
Seedling-protection dressing agent for rice of the present invention has that filming performance is good, lasting period length, good drug efficacy, efficacy stability, to rice safety, easy to use, simplify the features such as agronomy operation, rice seed soaking again adding medicine, need not stir, after presoaking and germinating, sowing also can directly be sowed without vernalization, bed soil need not be sterilized, need not spray diseases prevention medicament seedling stage, solve in current production because agricultural chemicals uses many, random, assorted, complex operation, operation quality is poor, the problem that causes rice shoot disease, poisoning often seriously to occur.
Embodiment
Be below most preferred embodiment of the present invention, further describe the present invention, but the present invention be not limited only to this.
Embodiment 1: most preferred embodiment
A kind of dressing agent for rice, preparation method is after Original Tebuconazole is mixed by 0.25%, 0.6%, 1.2%, 2%, 6%, 0.5%, 3% and 86.45% part by weight with Tween 80, SOPA, rhodamine toner, sodium alginate or polyvinyl alcohol, hydroxyethylcellulose, glycerine and water, add sand mill sand milling, finally use lemon acid for adjusting pH to 6～7, then liquid is separated and obtains sample with abrasive media.
Use the technological process of dressing agent for rice dressing to be: selected seed rice, seed dressing and coating, medicine film solidify.
Result of use:
The capsuled seed of getting 10g adds the water of 12.5mL to soak seed.Measure respectively two parts of capsuled seed effective component contents of immersion front and back (glacial acetic acid extraction) by high performance liquid chromatography, inspection product coating immersion expulsion rate, after measured seed coat agent dressing immersion expulsion rate < 5% of the present invention.
2010, in Heilongjiang Province's friendship, Hongqiling Farm experiment station, carry out seed (96-98%, 88-89%, 83%) the application seed coat agent dressing test of the present invention of 3 magnitude germination rates.Result shows, within the scope of 83-98% after the seed application of different germination rates seed coat agent dressing of the present invention, and percentage of seedgermination and capsuled seed germination rate no significant difference not, its conclusion is also verified in production application.Illustrate that seed coat agent filming performance of the present invention is good, pharmacy security, all can apply seed coat agent of the present invention for producing the upper elite seed (germination rate is more than 85%) using that allows.
On November 26th, 2006, Institute of Plant Protection of academy of agricultural sciences of Liaoning Province Agricultural University Of Shenyang's rice test carry out the test of seedling-protection seed coat agent control rice seedling blight, result is as shown in table 1.
Table 10.25% Tebuconazole suspension seed-coating agent control rice seedling blight result of the test (in May, 2006)
Note: application Deng Kenshi multipole is poor carries out the test of the preventive effect significance of difference, a, b represent respectively the size of the significance of difference, first obtain minimum significantly extreme difference L.S.R.0.05, it is the significance of difference 5%, average anti-heterodyne is less than the alphabetical a that puts on of minimum significantly extreme difference, show that difference is not remarkable, average anti-heterodyne is greater than the alphabetical b that puts on of minimum significantly extreme difference, shows significant difference.
The best using dosage of 0.25% Tebuconazole suspension seed-coating agent is 25 milliliters/kilogram, and rice safety, without poisoning, is had no to impact to the biology of test region.
Show according to three provinces in the northeast of China, Hebei province and Deng Di field, Ningxia Hui Autonomous Region demonstration result: 0.25% Tebuconazole suspension seed-coating agent carries out seed pelleting control rice seedling blight, bakanae disease with the dosage of 25ml/kg seed, preventive effect is at 79.04-100.0%, and the lasting period is long.0.25% Tebuconazole suspension seed-coating agent shows safety without poisoning to paddy rice.In production, recommendation 0.25% Tebuconazole suspension seed-coating agent carries out seed pelleting control rice seedling blight, bakanae disease taking the dosage of 25.0ml/kg seed (being that pesticide-seeds ratio is as 1:50).
Claims (1)
1. a dressing agent for rice, it is characterized in that: the preparation method of dressing agent for rice is after Original Tebuconazole is mixed by 0.25%, 0.6%, 1.2%, 2%, 6%, 0.5%, 3% and 86.45% part by weight with Tween 80, SOPA, rhodamine toner, sodium alginate or polyvinyl alcohol, hydroxyethylcellulose, glycerine and water, add sand mill sand milling, finally use lemon acid for adjusting pH to 6～7, then liquid is separated and obtains sample with abrasive media; The technological process of described dressing agent for rice dressing is: selected seed rice, seed dressing and coating, medicine film solidify.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210372607.3A CN102845432B (en) | 2012-09-29 | 2012-09-29 | Rice seed coating agent |
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| CN201210372607.3A CN102845432B (en) | 2012-09-29 | 2012-09-29 | Rice seed coating agent |
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| CN102845432B true CN102845432B (en) | 2014-07-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103053244B (en) * | 2013-01-16 | 2014-12-10 | 南京农业大学 | Crop seed coating agent prepared from novel biomass carbon of agricultural wastes and preparation method of coating agent |
| CN105613513B (en) * | 2014-11-19 | 2018-05-18 | 江苏维尤纳特精细化工有限公司 | A kind of Tebuconazole suspension seed-coating agent and preparation method thereof |
| CN105875829A (en) * | 2016-04-18 | 2016-08-24 | 合肥市农泰农业科技有限公司 | Ultraviolet radiation preventing storage promoting paddy rice seed membrane coating liquid |
| CN105940903A (en) * | 2016-05-05 | 2016-09-21 | 湄潭县宫廷香米业有限责任公司 | Method for planting red rice |
| CN112425477A (en) * | 2020-11-17 | 2021-03-02 | 吉林省农业科学院 | Rice seedling raising bed soil, application and seedling raising method |
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| CN101133735A (en) * | 2007-08-19 | 2008-03-05 | 张强 | Tebuconazole-containing suspended seed coating agent and preparation method thereof |
| WO2008061654A1 (en) * | 2006-11-24 | 2008-05-29 | Bayer Cropscience Ag | Fungicidal active agent combination |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061654A1 (en) * | 2006-11-24 | 2008-05-29 | Bayer Cropscience Ag | Fungicidal active agent combination |
| CN101133735A (en) * | 2007-08-19 | 2008-03-05 | 张强 | Tebuconazole-containing suspended seed coating agent and preparation method thereof |
Non-Patent Citations (3)
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| 刘步林.种衣剂配方组成和包衣机械.《农药剂型加工技术》.化学工业出版社,1998,第524-525页. * |
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