Soil conditioner for nursery stock planting and using method thereof
A technology of soil improver and seedlings, applied in the field of soil improvement, can solve the problems of multiple watering, etc., and achieve the effect of solving water loss and withering, strong water retention capacity and water supply capacity, and degradable degradation speed
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preparation example 1
[0053] The preparation method of cotton cellulose comprises the following steps:
[0054] Step 1b: take 20 g of absorbent cotton, cut it into pieces, grind and dry it, and then pulverize it to obtain absorbent cotton powder.
[0055] Step 2b: Take 5g of absorbent cotton powder and add it to 113g of 15% (Wt) NaOH solution, soak for 1h, ultrasonic for 0.5h, then heat and stir for 24h and filter to obtain coarse cotton cellulose.
[0056] Step 3b: Wash the coarse cotton cellulose with deionized water until the lotion is colorless and neutral, then add 10% (Wt) hydrogen peroxide solution for decolorization and purification, and then wash with ethanol to adjust the pH value of the solution to 4.5, Sonicate again for 0.5h, then keep constant temperature at 60°C, stir and react for 1h, cool to room temperature and filter, finally add 45mL methanol solution to reflux, stir and heat for 0.5h, filter and discard the filtrate to obtain filter residue.
[0057] Step 4b: Wash the filter r...
preparation example 2
[0059] The preparation method of cotton cellulose comprises the following steps:
[0060] Step 1b: Take 30 parts of absorbent cotton, shred it, grind and dry it, and then pulverize it to obtain absorbent cotton powder.
[0061] Step 2b: Take 10 parts of absorbent cotton powder and add it to 136g of 15% (Wt) NaOH solution, soak for 2 hours, sonicate for 1 hour, heat and stir for 30 hours and filter to obtain coarse cotton cellulose.
[0062] Step 3b: Wash the coarse cotton cellulose with deionized water until the lotion is colorless and neutral, then add 10% (Wt) hydrogen peroxide solution for decolorization and purification, then wash with ethanol, adjust the pH value of the solution to 5.0, Sonicate again for 1 h, then keep the constant temperature at 60°C, stir for 2 h, cool to room temperature and filter, add 55 mL of methanol solution to reflux, stir and heat for 1 h, filter and discard the filtrate to obtain a filter residue.
[0063] Step 4b: Wash the filter residue wit...
preparation example 3
[0078] The preparation method of superabsorbent resin comprises the following steps:
[0079] Step 1a: Dissolve 12g LiCl in 100g NMP solvent to prepare a LiCl / NMP solution, add 1g of cotton cellulose prepared in Preparation Example 2 to dissolve the prepared LiCl / NMP solution to obtain the first dissolved product, Stir down for 4d;
[0080] Step 2a: Stir the first lysate and add 2.32 g of DMAP, DMAP is dissolved to obtain the second lysate, add 21.5 g of succinic anhydride to the second lysate, and stir at room temperature for 36 hours to obtain the third lysate;
[0081] Step 3a: Pour the third lysate into 1185g of methanol and neutralize with 82.6g of 10% (Wt) NaOH solution to obtain the fourth lysate;
[0082] Step 4a: filter the fourth dissolved matter, dry under reduced pressure, and then pulverize to obtain a superabsorbent resin; the particle size range of the superabsorbent resin is 0.5-0.9mm.
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