CN101817708B - Plant source seed soaking agent and preparation method thereof - Google Patents
Plant source seed soaking agent and preparation method thereof Download PDFInfo
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- CN101817708B CN101817708B CN2010101599229A CN201010159922A CN101817708B CN 101817708 B CN101817708 B CN 101817708B CN 2010101599229 A CN2010101599229 A CN 2010101599229A CN 201010159922 A CN201010159922 A CN 201010159922A CN 101817708 B CN101817708 B CN 101817708B
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- seed soaking
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- 238000002791 soaking Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 35
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229930191978 Gibberellin Natural products 0.000 claims abstract description 15
- IXORZMNAPKEEDV-UHFFFAOYSA-N gibberellic acid GA3 Natural products OC(=O)C1C2(C3)CC(=C)C3(O)CCC2C2(C=CC3O)C1C3(C)C(=O)O2 IXORZMNAPKEEDV-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003448 gibberellin Substances 0.000 claims abstract description 15
- 239000011573 trace mineral Substances 0.000 claims abstract description 15
- 235000013619 trace mineral Nutrition 0.000 claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 14
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 12
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000001110 calcium chloride Substances 0.000 claims abstract description 11
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 11
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims abstract description 11
- 235000019796 monopotassium phosphate Nutrition 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 15
- 229960002715 nicotine Drugs 0.000 claims description 15
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 claims description 15
- -1 nicotine compound Chemical class 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 12
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 10
- 239000010902 straw Substances 0.000 claims description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 abstract description 47
- 241000209140 Triticum Species 0.000 abstract description 15
- 235000021307 Triticum Nutrition 0.000 abstract description 15
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000575 pesticide Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 241000238631 Hexapoda Species 0.000 abstract 1
- 201000010099 disease Diseases 0.000 abstract 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 abstract 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 abstract 1
- 230000001954 sterilising effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 238000002474 experimental method Methods 0.000 description 7
- 235000013339 cereals Nutrition 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- BXNJHAXVSOCGBA-UHFFFAOYSA-N Harmine Chemical compound N1=CC=C2C3=CC=C(OC)C=C3NC2=C1C BXNJHAXVSOCGBA-UHFFFAOYSA-N 0.000 description 4
- 229930002875 chlorophyll Natural products 0.000 description 3
- 235000019804 chlorophyll Nutrition 0.000 description 3
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 2
- 235000003255 Carthamus tinctorius Nutrition 0.000 description 2
- 244000020518 Carthamus tinctorius Species 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 230000031016 anaphase Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 230000002786 root growth Effects 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention belongs to the technical field of pesticide and discloses a seed soaking agent. The seed soaking agent comprises 0.5 to 1.5 percent of calcium chloride, hydrogen peroxide, 0.5 to 1.5 percent of monopotassium phosphate, 15 to 18 percent of ammonia, 0.005 to 0.01 percent of gibberellin, 0.001 to 0.003 percent of trace elements, 30 to 50 percent of plant source extract and the balance of solvent; the solvent is a mixture of ethanol and water; the raw materials used by the seed soaking agent have no residue and pollution during use; the seed soaking agent has the functions of killing insect, sterilizing, resisting diseases and increasing output, and has high quality and efficiency and low cost; under the level of wheat output of 350 kilograms per hectare, 25 to 47kilograms of wheat can be increased by only one-time seed soaking; the economic benefit is good; and meanwhile, the seed soaking agent has the advantages of easily obtaining high-power concentrated solution, along with convenient transportation.
Description
Technical field
The invention belongs to technical field of pesticide, relate to a kind of plant resource seed soaking agent and preparation method thereof.
Background technology
Owing to the soil drought lack of water, wheat yield is low and unstable for a long time in many wheat belts.Especially during wheat cultivation, rainfall is few, even does not have rainfall for a long time, causes soil drought to sow.With regard to present circumstances, the shortage of water resource will be long-term with the threat of arid, improve the level of production of wheat, must seek science, water-saving culture approach efficiently.
At present, wheat seed inorganic agent such as seed soaking agent, seed dressing etc., quite a lot, of a great variety; The drought-resistant agricultural chemicals of home sale has now: with " FA Handilong " is the xanthohumic acid kind of representative, is synthetic preparations such as the natural biological bases of representative, and succinic acid with banisterine (79041).The biologically active of said " FA Handilong " is lower, and the production cost of banisterine (79041) is high, resource-constrained.
Summary of the invention
The object of the invention provides a kind of plant resource seed soaking agent and preparation method thereof.
For achieving the above object, the technical scheme that the present invention adopts is: a kind of plant resource seed soaking agent, and said seed soaking agent comprises:
Calcium chloride 0.5%-1.5%;
Hydrogen peroxide solution 3%-5%;
Potassium dihydrogen phosphate 0.5%-1.5%;
Ammoniacal liquor 15%-18%;
Gibberellin 0.005%-0.01%;
Trace element 0.001%-0.003%;
Plant resource extract 30%-50%;
All the other are solvent, and said solvent is the mixture of second alcohol and water; Said trace element is: zinc, magnesium or boron; Said plant resource extract is the plant extraction liquid that contains nicotine compound; Above-mentioned percentage is mass percent.
In the technique scheme, the amount of said ethanol is for just in time dissolving the amount of gibberellin.
In the technique scheme, the mass percent of ammonia is 20-30% in the said ammoniacal liquor.
In the technique scheme, said plant resource extract is the plant extraction liquid that contains nicotine compound, and its preparation method is:
After will containing clean the shredding of straw, stem, leaf of nicotine compound,, behind the 6-8h, filter, get said plant extraction liquid with the submergence of mass fraction 10-15% hydrochloric acid.
In the technique scheme, contain nicotine in the said plant extraction liquid, the content of nicotine is mass percent 0.8%～1.4% in the plant extraction liquid; The said plant that contains nicotine compound is selected from but is not limited to: safflower tobacco.
The preparation method of above-mentioned plant resource seed soaking agent may further comprise the steps:
The straw, stem, leaf that (1) will contain nicotine compound with the submergence of mass fraction 10-15% hydrochloric acid, behind the 6-8h, filters after cleaning and shredding, must the plant resource extract;
(2), get following batching according to mass percent:
Calcium chloride 0.5%-1.5%;
Hydrogen peroxide solution 3%-5%;
Potassium dihydrogen phosphate 0.5%-1.5%;
Ammoniacal liquor 15%-18%;
Gibberellin 0.005%-0.01%;
Trace element 0.001%-0.003%;
Plant resource extract 30%-50%;
All the other are solvent, and said solvent is the mixture of second alcohol and water; Said trace element is: zinc, magnesium or boron;
Gibberellin is dissolved in the ethanol, adds calcium chloride, hydrogen peroxide solution, potassium dihydrogen phosphate, ammoniacal liquor, trace element, plant resource extract and water then.In the optimized technical scheme, the plant resource extract of acquisition (plant extraction liquid that contains nicotine compound) should use in 48h, and is fresh to guarantee.
Adopt above-mentioned seed soaking agent or plant resource seed soaking agent when seed soaking, according to the mass ratio 1.2-2 of seed soaking agent solution and seed: 1 is immersed in seed in the seed soaking agent.
Because the technique scheme utilization, the present invention compared with prior art has advantage:
1. the raw materials used noresidue in use of seed soaking agent according to the invention, pollution-free; And have, the raising the output function, of fine quality, efficient, inexpensive, under the yield level of wheat 350kg/ha, only once the seed soaking, can increase production 25-47kg, good in economic efficiency;
2. the seed soaking agent according to the invention high power concentrate that is easy to get, transportation is convenient.
Embodiment
Below in conjunction with embodiment the present invention is further described:
Embodiment one:
Plant (safflower tobacco) stalk, stem, leaf that (1) will contain nicotine compound with mass fraction 15% hydrochloric acid submergence, behind the 7h, filters after cleaning and shredding, must plant extraction liquid (plant extraction liquid that contains nicotine compound);
(2), get following component according to mass percent:
Calcium chloride 0.5%;
Hydrogen peroxide solution 5%;
Potassium dihydrogen phosphate 1.5%;
Ammoniacal liquor 15%;
Gibberellin 0.01%;
Trace element 0.003%;
Plant resource extract 35%;
All the other are solvent, and said solvent is the mixture of second alcohol and water, and the amount of ethanol is the amount of positive good dissolving gibberellin;
Gibberellin is dissolved in the ethanol, adds calcium chloride, hydrogen peroxide solution, potassium dihydrogen phosphate, ammoniacal liquor, trace element, plant resource extract and water then, obtain a kind of plant resource seed soaking agent.
Embodiment two:
The straw, stem, leaf that (1) will contain nicotine compound with mass fraction 12% hydrochloric acid submergence, behind the 8h, filters after cleaning and shredding, must plant extraction liquid (plant extraction liquid that contains nicotine compound);
(2), get following component according to mass percent:
Calcium chloride 1%;
Hydrogen peroxide solution 3%;
Potassium dihydrogen phosphate 0.5%;
Ammoniacal liquor 17%;
Gibberellin 0.006%;
Trace element 0.002%;
Plant resource extract 48%;
All the other are solvent, and said solvent is the mixture of second alcohol and water, and the amount of ethanol is the amount of positive good dissolving gibberellin;
Gibberellin is dissolved in the ethanol, adds calcium chloride, hydrogen peroxide solution, potassium dihydrogen phosphate, ammoniacal liquor, trace element, plant resource extract and water then, obtain a kind of plant resource seed soaking agent.
Embodiment three: adopt the experiment of soaking seed of embodiment one gained plant resource seed soaking agent
Pot experiment is carried out with five kinds of different extension rate medicaments, and the plant resource seed soaking agent was respectively 1: 12000,1: 6000,1: 4000,1: 2000,1: 1000 with the ratio (volume ratio) of water, adds the supernatant water contrast; Establish 6 processed group, seed soaking 4-6h altogether; The liquid medicine liquid level is advisable to exceed seed 1cm, stirs therebetween 2 times, drains i.e. sowing after soaking; Respectively establish three repetitions, main examination increases tiller, increase fringe, increase anti-, effect such as enlarge afforested area.
1 increases the tiller effect
Through the wheat seeds that embodiment one gained plant resource seed soaking agent is handled, be dark green leaf color seedling stage, and individual plant is tillered and increased.The preceding examination of surviving the winter increases the tiller effect, and table 1 shows: individual plant is tillered except that minimizing and processing increase seldom in 1: 6000 are slightly seen in processing in 1: 12000; Each processing in all the other 1: 4000,1: 2000,1: 1000 all increases more, and amplification reaches every strain 0.20-0.35 tiller, and respectively being equivalent to tillering capacity increases 7.32%-9.10%.
Table 1 pot experiment increases the tiller effect
2 increase the fringe effect, referring to table 2:
Table 2 pot experiment increases the fringe effect
Cheng Suihou investigates and to increase the fringe effect, and table 2 shows 1: though 12000 handle that individual plant tiller number slightly reduces in surviving the winter before, along with the reduction of rare fringe multiple, increasing obviously of mature spike number increases 1: 4000 of fringe effect maximum, 0.64 of single pearl spike number increase.
3 increase anti-effect
Because the raising of Fertilization Level, spring, rainwater was often more again, and the wheat cauline leaf is steep easily long, and root growth is bad, often caused deuterogenesis's underproduction that lodges.Therefore, how to prevent wheat later stage lodging, strengthen anti-adversity, become a general and important problem that needs to be resolved hurrily in the improving yield of wheat in recent years.The application of embodiment one gained plant resource seed soaking agent can address this problem preferably: the one, and plant is short strong; The 2nd, cane is sturdy, not only seedling stage like this, the maturing stage is also like this.
Maturing stage is investigated plant height: 1: 12000,1: 6000 liang of processing is compared with contrast, and difference is little; But handled from 1: 4000, significant difference increases, and the plant whole height reduces all more than 4.5cm.Maturing stage is investigated each three big anti-reverse index of handling of cane: embodiment one gained plant resource seed soaking agent, i.e. the 1. unit length dry weight of base portion 1,2 internodes; 2. the base portion second internode stem is thick; 3. the base portion second internode stem wall thickness etc. all makes moderate progress, and with more obvious after handling from 1: 4000, wherein stem ancient piece of jade, round, flat and with a hole in its centre thickness is particularly evident.As shown in table 3:
Table 3 pot experiment increases anti-effect
4 effects of enlarging afforested area
The wheat that uses embodiment one gained plant resource seed soaking agent to handle, plant strain growth is healthy and strong, and the blade pier is real, and the leaf look from start to finish all more dark green, and the anaphase blade life-span prolongs.Measure the chlorophyll content in the boot leaf before the results, table 4 shows: except that handled at 1: 12000, all the other were respectively handled chlorophyll content and all are higher than contrast, and processing in wherein 1: 4000,1: 2000,1: 1,000 three is obviously higher.Anaphase blade chlorophyll is obviously higher, then helps photosynthetic carrying out, and promotes the accumulation of nutriment, helps the raising of fringe real grain number and thousand kernel weight, finally helps increasing output.But according to observations, comparison breeding time is according to slightly prolonging.
The table 4 pot experiment effect of enlarging afforested area
Embodiment five: adopt the experiment of soaking seed of embodiment two gained plant resource seed soaking agents
Field demonstration is only established 1: 6000,1: 4,000 three processed group of ratio of clear water contrast, plant resource seed soaking agent and water, and demonstration area each 0.5 hectare (ha) for the yielding ability contrast, is not established repetition, and main examination increases effects such as grain, weightening finish, raising the output.Experimental cultivar is an Anhui wheat 19, and inspection method is undertaken by crops field record project and standard etc.
The result is referring to table 5, and the result shows, all obviously raising the output of processing of 1: 4000 and 1: 2000 mainly show as the raising of number of productive ear, the real grain of fringe number, thousand kernel weight etc.
Table 5 field demonstration increase grain, weightening finish, effect of increasing production
| Handle number | Extension rate | Number of productive ear (ten thousand/ha) | The real grain of fringe number (individual) | Thousand kernel weight (g) | Output (kg/ha) | Raising the output % |
| 1 | The clear water contrast | 26.90 | 32.9 | 37.8 | 334.5 | |
| 2 | 1∶4000 | 29.27 | 34.1 | 38.1 | 380.3 | 13.70 |
| 3 | 1∶2000 | 28.30 | 33.6 | 38.0 | 361.3 | 8.01 |
Above-mentioned test shows; Embodiment two gained seed soaking agents are under 1: 4000 situation of liquid medicine ratio; Once soaked seed 4-6 hour; Have the tiller of increasing, increase fringe, increase anti-, enlarge afforested area, increase functions such as grain, weightening finish, raising the output, generally can increase production 8%-13%, as economy of current improving yield of wheat and effectively supplementary measures provide that to promote the use of be very suitable.
Claims (4)
1. a plant resource seed soaking agent is characterized in that, said seed soaking agent comprises:
Calcium chloride 0.5%-1.5%;
Hydrogen peroxide solution 3%-5%;
Potassium dihydrogen phosphate 0.5%-1.5%;
Ammoniacal liquor 15%-18%;
Gibberellin 0.005%-0.01%;
Trace element 0.001%-0.003%;
Plant resource extract 30%-50%;
All the other are solvent, and said solvent is the mixture of second alcohol and water; Said trace element is: zinc, magnesium or boron; Said plant resource extract is the plant extraction liquid that contains nicotine compound; Its preparation method is: after will containing clean the shredding of straw, stem, leaf of nicotine compound, with the submergence of mass fraction 10-15% hydrochloric acid, behind the 6-8h; Filter, get said plant extraction liquid; Above-mentioned percentage is mass percent.
2. plant resource seed soaking agent according to claim 1 is characterized in that, the amount of said ethanol is for just in time dissolving the amount of gibberellin.
3. plant resource seed soaking agent according to claim 1 is characterized in that, the mass percent of ammonia is 20-30% in the said ammoniacal liquor.
4. the preparation method of a plant resource seed soaking agent is characterized in that, may further comprise the steps:
The straw, stem, leaf that (1) will contain nicotine compound with the submergence of mass fraction 10-15% hydrochloric acid, behind the 6-8h, filters after cleaning and shredding, must the plant resource extract;
(2), get following batching according to mass percent:
Calcium chloride 0.5%-1.5%;
Hydrogen peroxide solution 3%-5%;
Potassium dihydrogen phosphate 0.5%-1.5%;
Ammoniacal liquor 15%-18%;
Gibberellin 0.005%-0.01%;
Trace element 0.001%-0.003%;
Plant resource extract 30%-50%;
All the other are solvent, and said solvent is the mixture of second alcohol and water; Said trace element is: zinc, magnesium or boron;
Gibberellin is dissolved in the ethanol, adds calcium chloride, hydrogen peroxide solution, potassium dihydrogen phosphate, ammoniacal liquor, trace element, plant resource extract and water then.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101599229A CN101817708B (en) | 2010-04-29 | 2010-04-29 | Plant source seed soaking agent and preparation method thereof |
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| CN2010101599229A CN101817708B (en) | 2010-04-29 | 2010-04-29 | Plant source seed soaking agent and preparation method thereof |
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| CN101817708A CN101817708A (en) | 2010-09-01 |
| CN101817708B true CN101817708B (en) | 2012-11-21 |
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| CN102976846B (en) * | 2012-11-26 | 2016-01-20 | 兰州世创生物科技有限公司 | A kind of compound botanical seed coat agent and preparation method thereof |
| CN103283784A (en) * | 2013-06-24 | 2013-09-11 | 合肥多加农业科技有限公司 | Long-acting environment-friendly paddy-rice seed-soaking agent and application method thereof |
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| CN101675740A (en) * | 2008-09-17 | 2010-03-24 | 中国科学院沈阳应用生态研究所 | Repair plant black nightshade seed-soaking solution and application thereof |
| CN101518261A (en) * | 2009-04-07 | 2009-09-02 | 中国农业科学院油料作物研究所 | Rape drought-resistance seed-soaking agent and preparation method thereof |
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