Grafting water-retaining agent containing super-high humic acid content for agriculture and forestry and preparation method of water-retaining agent
A humic acid and graft-type technology, applied in the field of graft-type agricultural and forestry water-retaining agent and its preparation, can solve the problems of unfavorable crop root respiration, poor repeated water absorption capacity, difficult natural degradation, etc. The effect of stimulating plant growth and development and strong ability to resist economic risks
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Embodiment 1
[0037] (1) Add 100g starch and 1000g water into the reactor, stir and heat to 50~90 o C, and keep this temperature for 20~60 minutes to gelatinize;
[0038] (2) Cool the reactants to 50 o C, add 250g acrylic acid, fully stir for 2 hours;
[0039] (3) Add a certain amount of potassium hydroxide solution with a concentration of 30.00%, adjust the neutralization degree of acrylic acid to 60-80%, and strictly control the temperature, not exceeding 40 o C;
[0040] (4) Add 500g of humic acid salt and stir well until uniform;
[0041] (5) Add 1g of N,N'-methylenebisacrylamide and 2g of ammonium persulfate, and stir for 5-10 minutes;
[0042] (6) Raise the temperature of the reaction solution to 70-80 o C to react, strictly control the temperature, not more than 80 o c. React to stop reaction when forming viscous gel-like product;
[0043] (7) The product was taken out, cooled to room temperature, cut into small pieces, dried, and pulverized with a pulverizer to obtain the gr...
Embodiment 2
[0045] (1) Add 80g of starch and 1000g of water into the reactor, stir and heat to 50~90 o C, and keep this temperature for 20~60 minutes to gelatinize;
[0046] (2) Cool the reactants to 50 o C, add 200g acrylic acid, fully stir for 2 hours;
[0047] (3) Add a certain amount of potassium hydroxide solution with a concentration of 30.00%, adjust the neutralization degree of acrylic acid to 60-80%, and strictly control the temperature, not exceeding 40 o C;
[0048] (4) Add 650g of humic acid salt and stir well until uniform;
[0049] (5) Add 1g of N,N'-methylenebisacrylamide and 1g of ammonium persulfate, and stir for 5-10 minutes;
[0050] (6) Raise the temperature of the reaction solution to 70-80 o C to react, strictly control the temperature, not more than 80 o c. React to stop reaction when forming viscous gel-like product;
[0051] (7) The product was taken out, cooled to room temperature, cut into small pieces, dried, and pulverized with a pulverizer to obtain t...
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