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A method for preparing tobacco seed germination bed by using corn stalks

A technology for corn stalks and tobacco seeds, which is applied to germination equipment and other directions, can solve the problems of harsh reaction conditions, long time consumption, poor water retention capacity of paper bed, etc., and achieves the effects of good water retention performance, stable germination environment, and cost reduction.

Active Publication Date: 2021-01-15
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water retention capacity of the paper bed is poor, and it is generally necessary to add water regularly, and the paper bed generally needs to be placed in different containers because the volatilization rate of the water is different, the amount of water that needs to be added is difficult to control, and it is difficult to maintain the consistency of the germination conditions; agar The bed cannot be reused, and the price is high, which has certain limitations for practical application
The reported superabsorbent resin germination bed has poly 2-acrylamido-2-methylpropanesulfonic acid (PAMPS) hydrogel germination bed (Ma Wenguang et al., 2012, CNIO2523786A), this material needs to be in N 2 Under protection, react at 60°C for 12 hours, the reaction conditions are harsh and time-consuming, which is not conducive to energy saving and environmental protection

Method used

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  • A method for preparing tobacco seed germination bed by using corn stalks
  • A method for preparing tobacco seed germination bed by using corn stalks
  • A method for preparing tobacco seed germination bed by using corn stalks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0041] Weigh 0.18 g of the 5 groups of treated corn stalks, place them in a 50 mL beaker, add acrylic acid neutralization solution (AA) with a neutralization degree of 70%-90%, cross-linking agent N,N-methylenebis Acrylamide (MBA), photoinitiator benzoin dimethyl ether (BDK), thermal initiator ammonium persulfate (APS), according to the mass ratio of AA:MBA:BDK:APS:corn straw is 100:0.20:0.75:0.30:30 Mix evenly, ultrasonically treat for 1min, put the mixed solution under a 250W UV lamp and irradiate for 5min, the distance between the UV lamp and the mixed solution is 35cm, then take out the superabsorbent resin, soak it in ethanol overnight, and remove the unreacted monomer and incompletely reacted oligomers to obtain pure superabsorbent resin, dried in an oven at 70°C to constant weight, crushed, and passed through a 40-mesh steel sieve to obtain superabsorbent resin powder, which was tested for water absorption and selected the best monomer Neutrality.

Embodiment 6～10

[0043]Weigh 0.18g of 5 groups of treated corn stalks, put them in a 50mL beaker, and mix them evenly according to the mass ratio of AA:BDK:APS:corn stalks of 100:0.75:0.30:30, and add acrylic acid with the best neutralization degree Neutralization solution (neutralization degree is 85%), photoinitiator benzoin dimethyl ether, thermal initiator ammonium persulfate, crosslinking agent MBA (0.01%, 0.02%, 0.03 %, 0.04% and 0.05%), mix evenly, ultrasonically treat for 1min, place the mixed solution under a 250W UV lamp and irradiate it for 5min, the distance between the UV lamp and the mixed solution is 35cm, then take out the super absorbent resin and soak it in ethanol , overnight, remove unreacted monomers and incompletely reacted oligomers to obtain pure superabsorbent resin, dry in an oven at 70°C to constant weight, pulverize, and pass through a 40-mesh steel sieve to obtain superabsorbent resin powder for water absorption To determine the optimal crosslinking agent dosage. ...

Embodiment 11～15

[0045] Weigh 0.18g of 5 groups of treated corn stalks, put them in a 50mL beaker, then add AA:MBA:APS:corn stalks with a mass ratio of 100:0.02:0.30:30, and add acrylic acid neutralizing solution with the best neutralization degree (neutralization degree is 85%), MBA, APS, add photoinitiator BDK (0.45%, 0.60%, 0.75%, 0.90% and 1.05% of monomer amount) respectively in 5 groups of reaction liquids, mix well, ultrasonic treatment 1min, put the mixed solution under a 250W UV lamp for 5min, the distance between the UV lamp and the mixed solution is 35cm, then take out the super absorbent resin, soak it in ethanol overnight, remove unreacted monomer and incomplete reaction Oligomers were obtained to obtain pure superabsorbent resin, dried in an oven at 70°C to constant weight, pulverized, and passed through a 40-mesh steel sieve to obtain superabsorbent resin powder, which was tested for water absorption and selected the optimal photoinitiator dosage.

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Abstract

The invention discloses a method for preparing a tobacco seed germinating bed by corn straws. The method includes the steps: firstly, uniformly mixing acrylic acid neutralization solution with neutralization degree of 70%-90%, pre-treated corn straws, initiators and cross-linking agents to obtain mixed liquid, irradiating the mixed liquid for 3-25 minutes by an ultraviolet lamp at indoor temperature, soaking the mixed liquid into alcoholic solution, and treating the mixed liquid after standing and drying to obtain composite hydrogel; secondly, soaking the composite hydrogel into ethyl alcohol,taking out the composite hydrogel, repeatedly flushing the composite hydrogel by deionized water, placing the composite hydrogel into adequate amounts of deionized water to swell until balanced waterabsorption, taking out a composite hydrogel block, and placing the composite hydrogel block into a culture vessel to obtain the hydrogel tobacco seed germinating bed.

Description

technical field [0001] The invention relates to the field of tobacco seed cultivation, in particular to a method for preparing a tobacco seed germination bed by using corn stalks. Background technique [0002] For the seed germination test, the most commonly used germination beds are paper beds including filter paper, germination paper, etc., and agar beds. The water retention capacity of the paper bed is poor, and it is generally necessary to add water regularly, and the paper bed generally needs to be placed in different containers, and the volatilization rate of the water is different. The amount of water that needs to be added is not easy to control, and it is difficult to maintain the consistency of the germination conditions; The bed cannot be reused, and the price is relatively high, which has certain limitations for practical application. The reported superabsorbent resin germination bed has poly 2-acrylamido-2-methylpropanesulfonic acid (PAMPS) hydrogel germination...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F289/00C08F220/06C08F222/38C08F2/48C08F4/30C08J3/075C08L33/02C08L97/00A01C1/02
CPCA01C1/02C08F2/48C08F4/30C08F289/00C08J3/075C08J2333/02C08J2497/00C08F220/06
Inventor 张明月赵铭钦王方玲殷全玉刘鹏飞
Owner HENAN AGRICULTURAL UNIVERSITY