CN102660051B - Adhesive of dry-powder rice seed coat and preparation method thereof - Google Patents
Adhesive of dry-powder rice seed coat and preparation method thereof Download PDFInfo
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- CN102660051B CN102660051B CN201210117342.2A CN201210117342A CN102660051B CN 102660051 B CN102660051 B CN 102660051B CN 201210117342 A CN201210117342 A CN 201210117342A CN 102660051 B CN102660051 B CN 102660051B
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Abstract
The invention discloses an adhesive of a dry-powder rice seed coat and a preparation method thereof, and belongs to the technical field of agrochemical auxiliary agents. The adhesive of the dry-powder rice seed coat comprises the following components: hydroxyethyl cellulose, lignin sulfonate and redispersible latex powder; the preparation method comprises the following steps: 1), weighing each raw material; and 2) stirring the hydroxyethyl cellulose, the lignin sulfonate and the redispersible latex powder uniformly, and thus obtaining the adhesive of the dry-powder rice seed coat. The adhesive of the dry-powder rice seed coat can improve the adhesion of chemically active substances and filler in the powdery seed coat and seeds, improve the adhesion uniformity and reduce shedding of the seed coat.
Description
Technical field
The invention belongs to agrochemicals auxiliary agent technical field, be specifically related to tackiness agent of a kind of paddy rice dry-powder seed coating agent and preparation method thereof.
Background technology
Seed pelleting is by the seed coat agent that contains the effective constituents such as agricultural chemicals, fertilizer, the growth regulator even coated processing treatment technology to seed-coat effectively by a certain percentage.Seed coating technology, to improving seeding ratio, is prevented and treated farm crop seedling stage diseases and pests successful, and is had promotion growth of seedling, increases output, saves agricultural chemicals and seed consumption, reduces the fertile input of field medicine and farmland ecological environment and pollutes texts.
At present, seed pelleting has coating and two kinds of forms of Pelleting.Envelope type seed coat agent is because attachment material is limited, to improving the poor effect of the seedling rate of Direct-seeding Rice in high temperature, accumulated water situation, and Pelleting type seed coat agent can be adhered to the activeconstituents that more can promote seed germination and improve the long microenvironment of kind of blastogenesis because of it, increasing successful on the percentage of germination of Direct-seeding Rice seed and seedling rate.
Pelleting seed coat agent is the molectron of chemically reactive substance, tackiness agent and weighting agent, and formulation is dry powder, and in Pelleting process, dry powder is evenly bonded at seed-coat, forms pill.Production practice show, the greatest problem that dry powder type seed coat agent exists is that the clinging power of seed coat agent and seed is poor, exists manual dressing inhomogeneous, the seed coat agent problem such as easily come off.Although Chinese invention patent CN1102944A and CN1145172A disclose the powdery seed coat agent of two kinds of paddy rice, wherein patent of invention CN1102944A proposes to take the oxygen resistence that powdery seed coat agent that calcium peroxide is main component can improve Direct-seeding Rice seed, effective water supply of root when patent of invention CN1145172A utilizes high-absorbent material with guarantee paddy drought seedling, but above-mentioned patent is not all studied the tackiness agent of dry-powder seed coating agent.Chinese invention patent CN 1345535A discloses a kind of seed coat agent of the obducens dressing for grass seed, the Walocel MT 20.000PV aqueous solution of this patent use 1.5～2% is binding agent, but dressing complex procedures, need to use pneumatic gun to spray binding agent, not be suitable for common peasant household.
In sum, fail at present effectively to solve dry-powder seed coating agent and the adhesive problem of seed, for promoting the application of seed coating technology in Rice Production, in the urgent need to paddy rice dry-powder seed coating agent tackiness agent is studied.
Summary of the invention
The problem existing for prior art, the object of the invention is to design the technical scheme that tackiness agent of a kind of paddy rice dry-powder seed coating agent and preparation method thereof is provided.The uniformity coefficient that this tackiness agent can improve chemically reactive substance and weighting agent and seed tack in powdery seed coat agent and adhere to, reduces coming off of seed coat agent.
The tackiness agent of described a kind of paddy rice dry-powder seed coating agent, is characterized in that the raw material that contains following weight per-cent:
Natvosol 20～45%
Sodium lignosulfonate 15～45%
Redispersable latex powder 20～50%.
The tackiness agent of described a kind of paddy rice dry-powder seed coating agent, is characterized in that the raw material that contains following weight per-cent:
Natvosol 25～40%
Sodium lignosulfonate 20～40%
Redispersable latex powder 25～45%.
The tackiness agent of described a kind of paddy rice dry-powder seed coating agent, is characterized in that the raw material that contains following weight per-cent:
Natvosol 30～35%
Sodium lignosulfonate 25～35%
Redispersable latex powder 30～40%.
The tackiness agent of described a kind of paddy rice dry-powder seed coating agent, is characterized in that described redispersable latex powder is vinyl acetate-ethylene copolymer.
The tackiness agent of described a kind of paddy rice dry-powder seed coating agent, is characterized in that the granular size of described Natvosol, sodium lignosulfonate and redispersable latex powder is 200～300 orders.
The preparation method of the tackiness agent of described a kind of paddy rice dry-powder seed coating agent, is characterized in that comprising following processing step:
1) by following weight percent, take each raw material: Natvosol 20～45%, sodium lignosulfonate 15～45% and redispersable latex powder 20～50%;
2) above-mentioned Natvosol, sodium lignosulfonate and redispersable latex powder are stirred, obtain the tackiness agent of paddy rice dry-powder seed coating agent.
The preparation method of the tackiness agent of described a kind of paddy rice dry-powder seed coating agent, is characterized in that by following weight percent, taking each raw material in step 1): Natvosol 25～40%, sodium lignosulfonate 20～40% and redispersable latex powder 25～45%.
The preparation method of the tackiness agent of described a kind of paddy rice dry-powder seed coating agent, is characterized in that by following weight percent, taking each raw material in step 1): Natvosol 30～35%, sodium lignosulfonate 25～35% and redispersable latex powder 30～40%.
The using method of the tackiness agent of above-mentioned a kind of paddy rice dry-powder seed coating agent is: by 12% paddy rice dry-powder seed coating agent tackiness agent and the chemically reactive substance and the weighting agent that amount to 88%, after mixing, stir, obtain paddy rice dry-powder seed coating agent.
The advantage of the tackiness agent of above-mentioned a kind of paddy rice dry-powder seed coating agent is: tackiness agent, with after moistening seed contacts, can be bonded on seed securely, and adhesion rate reaches more than 98.6%.And the Natvosol in tackiness agent of the present invention, sodium lignosulfonate tool be water-soluble, swelling property well, and the film that the emulsion that redispersable latex powder forms in water forms after contacting with other material has very strong water tolerance, therefore the dry-powder seed coating agent that contains this tackiness agent had both had certain water tolerance in the higher field of moisture, guaranteed that seed coat agent do not ruined by water-soluble; Have again certain water absorption and swelling ability, allow suitable moisture to pass through, actives mass-energy is slowly dissolved release, required for seed germination, growth of seedling.
Embodiment
Embodiment 1
By 30.0g Natvosol, 48.0g sodium lignosulfonate, 42.0g redispersable latex powder, stir, obtain dry-powder seed coating agent tackiness agent 120.0g, and then the chemically reactive substance that adds 300.0g to be formed by calcium peroxide, naphthylacetic acid, uniconazole, magnesium sulfate, zinc sulfate, boric acid and prochloraz, 580.0g medical stone fine powder is made weighting agent, fully mix, obtain 1000g dry-powder seed coating agent.
Embodiment 2
Get 42.0g Natvosol, 36.0g sodium lignosulfonate, 42.0g redispersable latex powder, stir, obtain dry-powder seed coating agent tackiness agent 120.0g, and then the chemically reactive substance that adds 300.0g to be formed by calcium peroxide, naphthylacetic acid, uniconazole, magnesium sulfate, zinc sulfate, boric acid and prochloraz, 580.0g medical stone fine powder is made weighting agent, fully mix, obtain 1000g dry-powder seed coating agent.
Embodiment 3
Get 42.0g Natvosol, 48.0g sodium lignosulfonate, 30.0g redispersable latex powder, stir, obtain dry-powder seed coating agent tackiness agent 120.0g, and then the chemically reactive substance that adds 300.0g to be formed by calcium peroxide, naphthylacetic acid, uniconazole, magnesium sulfate, zinc sulfate, boric acid and prochloraz, 580.0g attapulgite is made weighting agent, fully mix, obtain 1000g dry-powder seed coating agent.
Embodiment 4
Get 36.0g Natvosol, 24.0g sodium lignosulfonate, 60.0g redispersable latex powder, stir, obtain dry-powder seed coating agent tackiness agent 120.0g, and then the chemically reactive substance that adds 300.0g to be formed by calcium peroxide, naphthylacetic acid, uniconazole, magnesium sulfate, zinc sulfate, boric acid and prochloraz, 580.0g wilkinite is made weighting agent, fully mix, obtain 1000g dry-powder seed coating agent.
Embodiment 5
Get 54.0g Natvosol, 18.0g sodium lignosulfonate, 48.0g redispersable latex powder, stir, obtain dry-powder seed coating agent tackiness agent 120.0g, and then the chemically reactive substance that adds 300.0g to be formed by calcium peroxide, naphthylacetic acid, uniconazole, magnesium sulfate, zinc sulfate, boric acid and prochloraz, 580.0g medical stone fine powder is made weighting agent, fully mix, obtain 1000g dry-powder seed coating agent.
Embodiment 6
Get 24.0g Natvosol, 54.0g sodium lignosulfonate, 42.0g redispersable latex powder, stir, obtain dry-powder seed coating agent tackiness agent 120.0g, and then the chemically reactive substance that adds 300.0g to be formed by calcium peroxide, naphthylacetic acid, uniconazole, magnesium sulfate, zinc sulfate, boric acid and prochloraz, 580.0g medical stone fine powder is made weighting agent, fully mix, obtain 1000g dry-powder seed coating agent.
In embodiment 1～6, redispersable latex powder is vinyl acetate-ethylene copolymer; The granular size of Natvosol, sodium lignosulfonate and redispersable latex powder is 200～300 orders.
Embodiment 7: physico-chemical property and the biological evaluation of paddy rice dry-powder seed coating agent tackiness agent of the present invention are as follows:
1) adhesion rate: get embodiment 1,2,3 paddy rice dry-powder seed coating agent 100g and be placed in round bottom container, add the moistening rice paddy seed of the 130g dressing that manually rolls.Take 3g (being accurate to 0.001g) coating seeds, be placed in respectively triangular flask, be placed in the vibrator 5min that vibrates, taking-up is weighed, and calculates adhesion rate.The calculation formula of adhesion rate is as follows:
2) coating uniformity: get embodiment 1,2,3 paddy rice dry-powder seed coating agent 100g and be placed in round bottom container, add the moistening rice paddy seed of the 130g dressing that manually rolls.Getting 20 coating seedss weighs, the not coating seeds of take is contrast, the weight of coating seeds deducts the not weight of coating seeds and is the weight (A) that coating seeds increases, repeat 20 times, the weight data that 20 coating seedss that record are increased is arranged from small to large, calculate its on average the value of gaining in weight be Aa.Sample coating uniformity is calculated as follows:
In formula: the number of times of the weight A that n-record coating seeds increases within the scope of 0.7～1.3A;
20-testing time.
The dressing expulsion rate measurement result of 3 kinds of seed coat agents is in Table 1.
3) rate of emergence: get each 12.0g of paddy rice dry-powder seed coating agent tackiness agent of embodiment 1,2,3, respectively add the fine ground paddy soil of 88.0g, fully mix, obtain dry-powder seed coating agent B1, B2, B3.The above-mentioned dry-powder seed coating agent of 100g is placed in to round bottom container, adds the moistening rice paddy seed rolling of 130g dressing.Get 100 coating seedss, the not coating seeds of take is contrast, is seeded in rice field, within after planting the 5th day, measures percentage of germination, repeats for 3 times.
The dressing expulsion rate measurement result of table 1 dry-powder seed coating agent
| Adhesion rate % | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Repeat 1 | 98.36 | 99.06 | 98.68 |
| Repeat 2 | 98.80 | 98.79 | 98.74 |
| Repeat 3 | 98.67 | 98.94 | 98.71 |
| Mean value | 98.61 | 98.93 | 98.71 |
As can be seen from Table 1, the dressing adhesion rate of testing sample is more than 98.6%, and Analysis of variance, and between different embodiment, difference is not remarkable, and the dry-powder seed coating agent of preparing with above-mentioned tackiness agent is described, dressing stability is very good, difficult drop-off after dressing.
The coating uniformity measurement result of 3 kinds of seed coat agents is in Table 2.
The coating uniformity measurement result of table 2 dry-powder seed coating agent
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Aa | 0.543 | 0.502 | 0.480 |
| (0.7～1.3)Aa | 0.380～0.705 | 0.351～0.653 | 0.336～0.624 |
| n | 20 | 20 | 20 |
| Coating uniformity (%) | 100 | 100 | 100 |
Note: 1. Aa is 20 mean values that sample is gained in weight;
2. (0.7～1.3) Aa is 0.7～1.3 times of 20 samples mean value of gaining in weight;
3.n is 20 and measures in sample, the sample number of gaining in weight in (0.7～1.3) Aa.
As can be seen from Table 2, although when the seed coat agent that contains above-mentioned 3 kinds of tackiness agents is carried out dressing, there is some difference for the weight Aa that sample increases, variance analysis shows that difference does not reach conspicuous level, and the coating uniformity of 3 embodiment all reaches 100%.The dry-powder seed coating agent dressing good uniformity of preparing with above-mentioned tackiness agent is described, the dressing that manually rolls can obtain even coating seeds.
The impact of table 3 paddy rice dry-powder seed coating agent tackiness agent on seed germination
| Percentage of germination % | B1 | B2 | B3 | Contrast |
| Repeat 1 | 82.1 | 78.9 | 79.4 | 79.2 |
| Repeat 2 | 81.3 | 79.8 | 81.8 | 81.7 |
| Repeat 3 | 79.6 | 81.0 | 80.7 | 81.5 |
| Mean value | 81.0 | 79.9 | 80.6 | 80.8 |
As seen from Table 3, tackiness agent with pulverize the seed coat agent dressing that soil makes after seed percentage of germination and contrast without significant difference, illustrate that above-mentioned paddy rice dry-powder seed coating agent tackiness agent does not have disadvantageous effect to the germination of seed.
The paddy rice dry-powder seed coating agent that embodiment 4～6 obtains carries out the test that embodiment 7 is identical, and it also can reach the technique effect identical with embodiment 7.
Claims (3)
1. a tackiness agent for paddy rice dry-powder seed coating agent, is characterized in that the raw material that contains following weight per-cent:
Natvosol 30～35%
Sodium lignosulfonate 25～35%
Vinyl acetate-ethylene copolymer 30～40%.
2. the tackiness agent of a kind of paddy rice dry-powder seed coating agent as claimed in claim 1, is characterized in that the granular size of described Natvosol, sodium lignosulfonate and redispersable latex powder is 200～300 orders.
3. a preparation method for the tackiness agent of paddy rice dry-powder seed coating agent, is characterized in that comprising following processing step:
1) by following weight percent, take each raw material: Natvosol 30～35%, sodium lignosulfonate 25～35% and redispersable latex powder 30～40%;
2) above-mentioned Natvosol, sodium lignosulfonate and redispersable latex powder are stirred, obtain the tackiness agent of paddy rice dry-powder seed coating agent.
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| CN201210117342.2A CN102660051B (en) | 2012-04-20 | 2012-04-20 | Adhesive of dry-powder rice seed coat and preparation method thereof |
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| CN201210117342.2A CN102660051B (en) | 2012-04-20 | 2012-04-20 | Adhesive of dry-powder rice seed coat and preparation method thereof |
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| CN102660051B true CN102660051B (en) | 2014-05-07 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1717975A (en) * | 2005-06-16 | 2006-01-11 | 西北农林科技大学无公害农药研究服务中心 | Membrane-forming agent used as rice seed coating agent, and its prepn. method |
| CN1745612A (en) * | 2004-09-06 | 2006-03-15 | 上海市农业科学院 | Small-sized seed thick film coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1745612A (en) * | 2004-09-06 | 2006-03-15 | 上海市农业科学院 | Small-sized seed thick film coating and preparation method thereof |
| CN1717975A (en) * | 2005-06-16 | 2006-01-11 | 西北农林科技大学无公害农药研究服务中心 | Membrane-forming agent used as rice seed coating agent, and its prepn. method |
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Effective date of registration: 20220106 Address after: Room 302, No. 2815, Longteng Avenue, Xuhui District, Shanghai 200030 Patentee after: Carbon search (Shanghai) Environmental Technology Co.,Ltd. Address before: 310006 No. 359, Stadium Road, Xiacheng District, Zhejiang, Hangzhou Patentee before: CHINA NATIONAL RICE Research Institute |
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