CN104086277A - Flowable water concentrate for wheat seed treatment - Google Patents
Flowable water concentrate for wheat seed treatment Download PDFInfo
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Abstract
The invention relates to a flowable water concentrate for wheat seed treatment. The flowable water concentrate for seed treatment comprises fulvic acid, a bactericide, a wetting dispersant, a film-forming agent and water. The fulvic acid accounts for 2%-4% by weight, and the bactericide accounts for 3%-8% by weight. The suspension seed coating agent has the characteristics of high suspension rate, good film forming performance, uniform coating, low toxicity and convenient use, etc. The flowable water concentrate for wheat seed treatment provided by the invention can improve the wheat emergence rate, enhance the wheat seedling stage plant height, plant fresh weight, plant dry weight, main root length, root fresh weight, root dry weight and chlorophyll, reduce the incidence of sheath blight in wheat field, and increase the wheat yield.
Description
Technical field
The present invention relates to a kind of suspension seed-coating agent, particularly a kind of Wheat Seedling that can improve grows, and reduces the seed treatment agent of wheat hypochnus sickness rate.
Background technology
China's wheat planting area is vast, kind is numerous, and wheat can run into invasion and attack and the destruction of various disease and pests etc. in process of growth, causes crop not grow normally and growth, when serious, can lethally die.Wheat hypochnus is found in China for 1975 first, since the eighties in 20th century, along with the change of cropping system and weather, the amount of broadcasting is bigger than normal in addition, the kind of the high and plantation of density is the factor such as not disease-resistant all, and oneself becomes the important disease that affects Quality Wheat high yield this disease.Investigation discovery, the water in Yangze river and Huai river and Yellow River-Huai River region waters wheatland.The underproduction that this disease causes generally reaches 10% left and right, when heavy, can reach 30%-50%, to Wheat Production, has brought massive losses.
Suspension seed-coating agent (Flowable water concentrate for seed treatment, be abbreviated as FS) be that solid pesticide is processed into fine particle, be aided with the preparation that the auxiliary agents such as dispersion agent, membrane-forming agent, antifreezing agent, thickening material, defoamer and safener suspend in water.Suspension seed-coating agent is without dust hazard, to seed treatment operator and environmental safety.Take water as matrix, the poisoning and the inflammable problem that by organic solvent, are not produced.Compare with powder seed coating agent, liquid particle diameter is less, and film forming properties is strong, and good permeability is easy to use.After seed treatment, liquid is evenly distributed, and medicine film is not separated, and expulsion rate is low, and seedling rate is high.Seed coat agent product can effectively reduce pesticide residue, promote plant growth, be the fastest formulation product of development in recent years.Compare the application of traditional plant protection product, the interference of the application climate labile factor of seed coat agent product is less.
Humic acids be mainly the remains of animal and plant through the natural organic high-molecular polymkeric substance of the decomposition of microorganism and conversion and element of the first species's complexity of forming under the earth or the effect of artificial physics chemical reaction, be extensively present in soil, lake, river, ocean.Wherein yellow humic acid is a kind of short carbon chain molecular structure material extracting from natural humic acid, its molecular weight, but the relative content of active group is higher, therefore has higher charge capacity and stronger physiologically active.Yellow humic acid is containing the required multiple main natural nutrition element of plant, can be from Foliage Absorption, strengthen photosynthesis simultaneously, strong plant, promote increasing crop yield and reduce its self colour fragrance, the at present application of yellow humic acid in agriculture production is mainly used in that corps leaf surface sprays and drip irrigation, and can be used as soil improvement agent, plant-growth regulator, fertilizer efficiency promotor and quality of agricultural product modifying agent.
How according to the growth characteristic of wheat, configure a kind of wheat dressing that is applicable to being applied to, particularly can prevent and treat the suspension seed-coating agent of wheat hypochnus, particularly important.
Summary of the invention
The object of this invention is to provide a kind of Wheat Seedling that improves grows and reduces the wheat suspended seed coating of wheat hypochnus sickness rate.
A suspension seed-coating agent of processing for wheat seed, described suspension seed-coating agent comprises xanthohumic acid, sterilant, wetting dispersing agent, membrane-forming agent and water.
In above-mentioned suspension seed-coating agent, the weight percent of xanthohumic acid is 2%-4%, and the weight percent of sterilant is 3%-8%.
Above-mentioned sterilant comprises difenoconazole and tebuconazole, and the weight ratio of difenoconazole and tebuconazole is 1～3:2～4.
Above-mentioned sterilant comprises Azoxystrobin and Wocosin 50TK, and wherein the weight ratio of Azoxystrobin and Wocosin 50TK is 3～4:0.8～1.8.
The weight percent of above-mentioned wetting dispersing agent is 3%-6%, and described wetting dispersing agent comprises aliphatic acid polyethenoxy ether phosphoric acid ester and/or styroyl phenol polyoxyethylene poly-oxygen propylene aether.
The weight percent of above-mentioned membrane-forming agent is 2%-3%, and described membrane-forming agent is aqueous polyvinyl acetate emulsion.
In above-mentioned suspension seed-coating agent, also comprise that weight percent is the frostproofer of 4%-5%, described frostproofer is ethylene glycol.
In above-mentioned suspension seed-coating agent, also comprise that weight percent is the pigment of 0.01%-1%, described pigment is acid scarlet.
In above-mentioned suspension seed-coating agent, also comprise that weight percent is the thickening material of 0. 05%-0.2%, described thickening material is xanthan gum.
In above-mentioned suspension seed-coating agent, also comprise that weight percent is the sanitas of 0.2%-0.3%, described sanitas is Kathon CG.
beneficial effect of the present invention
1, suspension seed-coating agent of the present invention has significantly improved Wheat Seedling plant height, strain fresh weight, strain dry matter, main root length, root fresh weight, root dry matter and chlorophyll, reduces the sickness rate of wheat hypochnus.Wherein xanthohumic acid, containing the required multiple main natural nutrition element of plant, can, from Foliage Absorption, strengthen photosynthesis simultaneously, strong plant, promotes increasing crop yield and reduce its self colour fragrance, and xanthohumic acid is easy to obtain, with low cost, the popularization while being applicable to establishing in large scale; Triazole species systemic fungicide difenoconazole, tebuconazole, Wocosin 50TK, there is the advantages such as toxicity is low, chemical stability is high, fungicidal spectrum is wide, the lasting period is long, its mechanism of action is sterol demethylation inhibitor, suppress the biosynthesizing of ergosterol and disturb the normal growth of germ, can be used for preventing and treating the multiple fungal disease of various crop.Azoxystrobin is a kind of methoxy acrylic bactericide, acts on the mixture III of fungi electron transport chain and to suppress energy synthetic, and without cross resistance, bacteriostatic activity is high with other sterilant that use on domestic market.
2, according to the present invention by one or both in xanthohumic acid and several sterilant for main ingredient is while being processed into product application according to the working method of suspension seed-coating agent, use completed in the wheat seed treatment stage, action effect can run through the Wheat Seedling stage, there is control sprout term disease and systemic disease, improve rate of emergence, promote seedling healthy growth, reduce the effects such as seed consumption, finally reach diseases prevention, control worm, improve the object of output the strong sprout of keeping a full stand of seedings.
3, the membrane-forming agent in suspension seed-coating agent of the present invention can guarantee concentrated seed and the root of acting on of limited farm chemical ingredients; difficult drop-off and dispersing; reduce diffusion and the Exposure to non-target of agricultural chemicals in environment, aspect minimizing medication and protection of the environment, there is larger advantage.
Accompanying drawing explanation
Fig. 1 is the affect column diagram of different treatment suspension seed-coating agent on wheat germination rate.
Fig. 2 is after planting each processing impact on wheat seedling growth of 20d.
Fig. 3 is after planting each processing impact on wheat seedling growth of 30d.
Fig. 4 is after planting each processing impact on wheat seedling growth of 40d.
Fig. 5 processes the test of control wheat hypochnus and prevents and treats banded sclerotial blight test-results for each.
Fig. 6 is wetting dispersing agent flow point measurement result.
Fig. 7 is wetting dispersing agent content and suspension viscosity graph of a relation.
Fig. 8 is thickening material kind and the impact of consumption on preparation processing performance.
Fig. 9 is the selection result of membrane-forming agent.
Embodiment
For the advantage of verifying that the suspension seed-coating agent of processing for wheat seed of the present invention has, spy tests and contrasts, the wetting dispersing agent adopting in experiment is: methylene-bis is sodium sulfonate (NNO) how, styrene acrylic copolymer (550s), alkyl formaldehyde resin Soxylat A 25-7 agriculture breast (700#), styroyl phenol polyoxyethylene poly-oxygen propylene aether (1601#, 1602#), alkylaryl polyoxyethylene poly-oxygen propylene aether (peaceful newborn 34#), alkylaryl polyoxyethylene polyoxypropylene ether (peaceful newborn 33#), styroyl phenol polyethenoxy ether (603#), special styroyl fluosite Soxylat A 25-7 (agriculture breast 404#), alkyl naphthalene sulfonic acid polycondensate sodium salt (D-425), the mixture of sulfonated alkyl naphathalene and negatively charged ion wetting agent (EFW), calcium dodecylbenzene sulphonate (agriculture breast 500#), aliphatic acid polyethenoxy ether phosphoric acid ester (SC3266), in bracket, be the numbering of Ricinate, hereinafter adopt numbering to represent corresponding Ricinate.
In following embodiment, what the per-cent after each component all represented is weight percent.
embodiment 1:
The suspension seed-coating agent of the present embodiment, each component concentration is as follows: xanthohumic acid 2%; Sterilant: Azoxystrobin 3%, Wocosin 50TK 1.8%; Wetting dispersing agent: SC3266 3%; Membrane-forming agent: polyvinyl acetate (PVA) 3%; Pigment: acid scarlet 0.01%; Thickening material: xanthan gum 0.15%; Sanitas: Kathon CG 0.2%; Frostproofer: ethylene glycol 4%; Water supplies 100%.
By above-mentioned formula, make suspension seed-coating agent: 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK suspension seed-coating agent.
embodiment 2:
The suspension seed-coating agent of the present embodiment, each component concentration is as follows: xanthohumic acid 2%; Sterilant: difenoconazole 1%, tebuconazole 4%; Wetting dispersing agent: 1601# 6%; Membrane-forming agent: polyvinyl acetate (PVA) 3%; Pigment: acid scarlet 0.01%; Thickening material: xanthan gum 0.2%; Sanitas: Kathon CG 0.3%; Frostproofer: ethylene glycol 5%; Water supplies 100%.
By above-mentioned formula, make suspension seed-coating agent: 7% xanthohumic acid benzene first tebuconazole suspension seed-coating agent.
embodiment 3:
The suspension seed-coating agent of the present embodiment, each component concentration is as follows: xanthohumic acid 2%; Tebuconazole 5%; Wetting dispersing agent: 700# 4%, 1601# 2%; Membrane-forming agent: polyvinyl acetate (PVA) 2%; Pigment: acid scarlet 0.01%; Thickening material: xanthan gum 0.1%; Sanitas: Kathon CG 0.3%; Frostproofer: ethylene glycol 5%; Water supplies 100%.
By above-mentioned formula, make suspension seed-coating agent: 7% xanthohumic acid tebuconazole suspension seed-coating agent.
embodiment 4:
The suspension seed-coating agent of the present embodiment, each component concentration is as follows: xanthohumic acid 4%; Difenoconazole 3%; Wetting dispersing agent: SC3266 3%, 1601# 2%; Membrane-forming agent: polyvinyl alcohol 2%; Pigment: acid scarlet 0.01%; Thickening material: xanthan gum 0.15%; Sanitas: Kathon CG 0.3%; Frostproofer: ethylene glycol 5%; Water supplies 100%.
By above-mentioned formula, make suspension seed-coating agent: 7% xanthohumic acid difenoconazole suspending seed-dressing agent.
embodiment 5:
The suspension seed-coating agent of the present embodiment, each component concentration is as follows: xanthohumic acid 2%; Derosal 8%; Wetting dispersing agent: SC3266 6%; Membrane-forming agent: polyvinyl acetate (PVA) 3%; Pigment: acid scarlet 0.01%; Thickening material: xanthan gum 0.15%; Sanitas: Kathon CG 0.3%; Frostproofer: ethylene glycol 5%; Water supplies 100%.
By above-mentioned formula, make suspension seed-coating agent: 10% xanthohumic acid derosal suspension seed-coating agent.
embodiment 6:
The suspension seed-coating agent of the present embodiment, each component concentration is as follows: xanthohumic acid 2%; Azoxystrobin 5%; Wetting dispersing agent: 700# 4%; Membrane-forming agent: polyvinyl alcohol 2%; Pigment: acid scarlet 0.01%; Thickening material: xanthan gum 0.2%; Sanitas: Kathon CG 0.2%; Frostproofer: ethylene glycol 4%; Water supplies 100%.
By above-mentioned formula, make suspension seed-coating agent: 7% xanthohumic acid Azoxystrobin suspension seed-coating agent.
embodiment 7:
The suspension seed-coating agent of the present embodiment, each component concentration is as follows: xanthohumic acid 2%; Wocosin 50TK 5%; Wetting dispersing agent: 1602# 4%; Membrane-forming agent: polyvinyl acetate (PVA) 3%; Pigment: acid scarlet 0.01%; Thickening material: xanthan gum 0.15%; Sanitas: Kathon CG 0.2%; Frostproofer: ethylene glycol 4%; Water supplies 100%.
By above-mentioned formula, make suspension seed-coating agent: 7% xanthohumic acid Wocosin 50TK suspension seed-coating agent.
embodiment 8:
The suspension seed-coating agent of the present embodiment, each component concentration is as follows: xanthohumic acid 2%; Sterilant: Azoxystrobin 4%, Wocosin 50TK 0.8%; Wetting dispersing agent: SC3266 3%; Membrane-forming agent: polyvinyl acetate (PVA) 3%; Pigment: acid scarlet 0.01%; Thickening material: xanthan gum 0.15%; Sanitas: Kathon CG 0.2%; Frostproofer: ethylene glycol 4%; Water supplies 100%.
embodiment 9:
The suspension seed-coating agent of the present embodiment, each component concentration is as follows: xanthohumic acid 2%; Sterilant: difenoconazole 3%, tebuconazole 2%; Wetting dispersing agent: 1601# 6%; Membrane-forming agent: polyvinyl acetate (PVA) 3%; Pigment: acid scarlet 0.01%; Thickening material: xanthan gum 0.2%; Sanitas: Kathon CG 0.3%; Frostproofer: ethylene glycol 5%; Water supplies 100%.
field control effectiveness test
(1) trial crops
Wheat breed is peaceful wheat No. 14, and by Jiangsu Province Agriculture Science Institute grain, doing institute provides.
(2) test design
Establish altogether 8 processing, seed coat agent consumption is 4g/100kg seed:
7% xanthohumic acid tebuconazole suspension seed-coating agent, note is processed and is numbered A, corresponding embodiment 3;
7% xanthohumic acid difenoconazole, note is processed and is numbered B, corresponding embodiment 4;
10% xanthohumic acid derosal, note is processed and is numbered C, corresponding embodiment 5;
7% xanthohumic acid Azoxystrobin, note is processed and is numbered D, corresponding embodiment 6;
7% xanthohumic acid Wocosin 50TK, note is processed and is numbered E, corresponding embodiment 7;
6.8% xanthohumic acid Azoxystrobin Wocosin 50TK suspension seed-coating agent, note is processed and is numbered F, corresponding embodiment 1;
7% xanthohumic acid benzene first tebuconazole suspension seed-coating agent, note is processed and is numbered G, corresponding embodiment 2;
Take clear water as blank, and note is processed and is numbered CK.
The wheat seed of full seed is chosen in percentage of germination test, processes liquid respectively and carries out seed pelleting by each, soaks after 1 h, takes out wheat seed and dries.100 wheat seeds are chosen in every processing, repeat for four times, and take without dressing wheat seed is contrast, on double-deck germination paper, germinate, in illumination box, cultivate, Temperature Setting is 20 ℃ of daytimes, in 15 ℃ of evenings, periodicity of illumination 12L/12D (h), records number of shoots after 7d.
Growth of seedling test adopts indoor pot method, totally 8 processing, and every processing repeats for 4 times, and 10 seeds are broadcast in every processing.After planting 20d, 30d, 40d investigate height of seedling, seedling fresh weight, seedling dry matter, main root length, root fresh material weight, root dry matter and chlorophyll.
(3) data processing
Data analysis adopts Excel and DPS3.01 analysis software, with Duncan ' s duncan's new multiple range method, mean number is carried out to multiple comparisons.
(4) results and analysis
the impact of different treatment on wheat seeds sprouting
As shown in Figure 1,7d after planting, each processes suspension seed-coating agent percentage of germination all rising in various degree, and between blank, has significant difference; That seedling rate is the highest is F and G, is significantly higher than other processing and blank.
the impact of different treatment on wheat seedling growth
After planting 20d each process wheat seedling growth affected to result as shown in Figure 2.
As shown in Figure 2, each processes that height of seedling, seedling fresh weight, seedling dry matter, main root are long, root fresh material is heavy, root dry matter and chlorophyll all raises than blank.
After planting 30d each process wheat seedling growth affected to result as shown in Figure 3.
As shown in Figure 3, each processes that height of seedling, seedling fresh weight, seedling dry matter, main root are long, root fresh material is heavy, root dry matter and chlorophyll all raises than blank.
After planting 40d each process wheat seedling growth affected to result as shown in Figure 4.
As shown in Figure 4, each processes that height of seedling, seedling fresh weight, seedling dry matter, main root are long, root fresh material is heavy, root dry matter and chlorophyll all raises than blank.
suspension seed-coating agent of the present invention is prevented and treated to wheat hypochnus field control effectiveness test.
1, test conditions
1.1, the selection of subjects, crop and kind
Subjects is: wheat hypochnus (
rhizoctonia cerealis).
Trial crops is: wheat, the peaceful wheat of kind No. 14.
1.2, arable farming and envrionment conditions
Test is located in Jiangsu Province Agriculture Science Institute to be carried out, and front stubble is paddy rice.Experimental plot middle fertility.
2, test design and arrangement
2.1, community arranges
Community area is 15m
2, repeating for 4 times, random district group is arranged.
2.2, application method
2.2.1, using method
Using method is seed treatment method.
2.2.2, spraying time and number of times
Seed treatment sowing on October 31st, 2012.
2.2.3, use capacity
Water consumption is that the processing dose of every double centner seed adds 1.5-2.0 premium on currency.
3, investigation method, time and number of times
3.1, control time
Investigation on March 26th, 2013 jointing stage wheat hypochnus preventive effect.
3.2, investigation method
The sampling of 5 of every communities, every some investigation 30 strains, record severity, by following stage division classification:
0 grade: do not fall ill;
1 grade: leaf sheath is fallen ill but cane is not fallen ill;
3 grades: leaf sheath morbidity, and invade stem, but cane scab ring stem less than 1/2;
5 grades: cane scab ring stem surpasses 1/2, but non-lodging or fracture;
7 grades: withered, lodging, withered dead ears.
3.3, drug effect method of calculation
Disease index (%)=∑ (diseased plant number * relative level numerical value at different levels)/investigate total strain number/7 * 100
Prevention effect (%)=(1-treatment zone disease index (dead ears rate)/blank district disease index (dead ears rate)) * 100.
4, results and analysis
As shown in Figure 5, each is processed is 74.42%-93.74% to the average preventive effect of wheat hypochnus, this shows, suspension seed-coating agent of the present invention, by xanthohumic acid and sterilant, coordinate, wheat hypochnus has been played to good preventive effect, particularly process F and G, preventive effect to wheat hypochnus is best, is respectively 93.74% and 90.95%.
For improving the performance of seed coat agent product, in the present invention, also the applicable wetting dispersing agent of the seed coat agent that contains xanthohumic acid, sterilant, thickening material, membrane-forming agent, frostproofer are screened:
Adopt flow point method to screen multiple wetting dispersing agent, with the wetting dispersing agent solution that contains certain content (5%), be crushed to certain fineness but the former medicinal powder of the solid end that is insoluble to this solution is mixed into pasty state to forming drop the minimum of required solution of dripping.Flow point is relevant with the fineness of solids to the activity of wetting dispersing agent, if the activity of wetting dispersing agent is higher, flow point is lower; Solid active agents is thinner, and its flow point is higher.So for same active substance, tensio-active agent is to its superior performance, the amount of the tensio-active agent that uses is just fewer; It is thinner that solid active thing is pulverized, and just more approaches the amount of the required tensio-active agent of suspension agent.Choose that flow point value is lower, dispersiveness and the good wetting dispersing agent of coating uniformity.
Take embodiment 1 as example, as shown in Figure 6, to the flow point value of 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK lower be 33#, 603#, SC3266, can select above-mentioned 3 kinds of flow point values lower enter the test that wetting dispersing agent content is selected.
The screening of wetting dispersing agent content:
Adopt viscosity curve method to determine the optimum content of wetting dispersing agent, get particle diameter and be the former medicinal powder end of 3～5 μ m in 200mL beaker, adding a series of content of wetting dispersing agent 404#, 550s and 34# is 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5% and 4% aqueous solution, be mixed with the work in-process suspension of 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK, measure its viscosity.Take viscosity as ordinate zou, and the content of wetting dispersing agent is X-coordinate, is depicted as viscosity curve.Wetting dispersing agent content corresponding to point that in curve, viscosity is minimum is the better content of dispersion agent.
As Fig. 7 can find out, wetting dispersing agent is larger to the viscosity of suspension, along with the raising of wetting dispersing agent consumption, the viscosity of suspension reduces gradually, reaches after a certain k value, along with the increase of content, viscosity significantly raises again, and in test, 3 kinds of wetting dispersing agents all manifest this kind of phenomenon.The minimum k value of 3 kinds of wetting dispersing agents is also different, and its corresponding wetting dispersing agent content is also different.All present " para-curve " shape curve.Agriculture breast 33# is when content is 3.5%, and the viscosity of the work in-process suspension of 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK is minimum; Agriculture breast 603# is when content is 3.5%, and the viscosity of the work in-process suspension of 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK is minimum; SC3266 is when content is 3%, and the viscosity of the work in-process suspension of 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK is minimum.From above-mentioned analytical results, the optimum content of the required SC3266 of 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK suspension is minimum, so select SC3266 as wetting dispersing agent, content is 3%.
The screening of thickening material:
Thickening material, for suspending, increase the viscosity of preparation, stops and delays particle gravity settling phenomenon, prevents that suspension agent caking and demixing phenomenon from occurring.Thickening material great majority are macromolecular compound, different thickening materials is also different on the impact of preparation processing performance, in formula, suitable thickening material not only has satisfactory stability and high suspensibility, and can prevent preparation caking, clay, sedimentation and particle coalescence, the processing of preparation is not brought to negative impact again.As the screening (other embodiment is same) of thickening material in the 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK suspension seed-coating agent of embodiment 1:
Take embodiment 1 as example, and as can be seen from Figure 8, the requirement of comprehensive suspension seed-coating agent to viscosity, mobility, dispersiveness, bleed rate, finally determines that the thickening material of 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK suspension seed-coating agent is xanthan gum, and content is 0.15%.
The screening of membrane-forming agent:
The screening of membrane-forming agent, should consider the stability after film forming dressing, improves again the water suction water tolerance after dressing, has good consistency with seed.Test is screened polyvinyl alcohol, benzene emulsion, sodium alginate, four kinds of membrane-forming agents of aqueous polyvinyl acetate emulsion, take film formation time, coating uniformity, expulsion rate to carry out determining of membrane-forming agent as index.
Take embodiment 1 as example, as shown in Figure 9, comprehensively compare the film formation time of 4 kinds of membrane-forming agents, coating uniformity and expulsion rate, result shows that the film formation time of polyvinyl acetate (PVA) is the shortest, and dressing is even, and expulsion rate is low, better performances.Determine that the applicable membrane-forming agent of 6.8% xanthohumic acid Azoxystrobin Wocosin 50TK suspension seed-coating agent is for being polyvinyl acetate (PVA).
The screening of frostproofer:
Add a certain amount of suitable frostproofer can prevent that seed coat agent from forming crystallization and reunion at lay up period, elitely select three kinds of antifreeze glycols, glycerol and urea and test.Comprehensive test effect and economic factors select ethylene glycol as frostproofer.
Claims (10)
1. a suspension seed-coating agent of processing for wheat seed, is characterized in that: described suspension seed-coating agent comprises xanthohumic acid, sterilant, wetting dispersing agent, membrane-forming agent and water.
2. suspension seed-coating agent according to claim 1, is characterized in that: in described suspension seed-coating agent, the weight percent of xanthohumic acid is 2%-4%, and the weight percent of sterilant is 3%-8%.
3. suspension seed-coating agent according to claim 2, is characterized in that: described sterilant comprises difenoconazole and tebuconazole, and the weight ratio of difenoconazole and tebuconazole is 1～3:2～4.
4. suspension seed-coating agent according to claim 2, is characterized in that: described sterilant comprises Azoxystrobin and Wocosin 50TK, and wherein the weight ratio of Azoxystrobin and Wocosin 50TK is 3～4:0.8～1.8.
5. according to the suspension seed-coating agent described in claim 3 or 4, it is characterized in that: the weight percent of described wetting dispersing agent is 3%-6%, described wetting dispersing agent comprises aliphatic acid polyethenoxy ether phosphoric acid ester and/or styroyl phenol polyoxyethylene poly-oxygen propylene aether.
6. suspension seed-coating agent according to claim 5, is characterized in that: the weight percent of described membrane-forming agent is 2%-3%, and described membrane-forming agent is aqueous polyvinyl acetate emulsion.
7. suspension seed-coating agent according to claim 6, is characterized in that: also comprise that weight percent is the frostproofer of 4%-5%, described frostproofer is ethylene glycol.
8. suspension seed-coating agent according to claim 6, is characterized in that: also comprise that weight percent is the pigment of 0.01%-1%, described pigment is acid scarlet.
9. suspension seed-coating agent according to claim 6, is characterized in that: also comprise that weight percent is the thickening material of 0. 05%-0.2%, described thickening material is xanthan gum.
10. suspension seed-coating agent according to claim 6, is characterized in that: also comprise that weight percent is the sanitas of 0.2%-0.3%, described sanitas is Kathon CG.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876674A (en) * | 2014-10-18 | 2015-09-02 | 颍上县永祥旱粮研究所 | Wheat seed coating agent |
| CN108076930A (en) * | 2017-12-30 | 2018-05-29 | 义红秀 | A kind of control method of shallot root rot |
| CN111788983A (en) * | 2020-08-24 | 2020-10-20 | 广西南亚热带农业科学研究所 | Tea tree seed propagation method |
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| CN108076930A (en) * | 2017-12-30 | 2018-05-29 | 义红秀 | A kind of control method of shallot root rot |
| CN111788983A (en) * | 2020-08-24 | 2020-10-20 | 广西南亚热带农业科学研究所 | Tea tree seed propagation method |
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