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Preparation method of corn stalk fertilizer

A technology of corn stalks and fertilizers, applied in the field of corn stalk fertilizer preparation, which can solve the problems that corn stalks cannot be used to prepare high water-absorbing fertilizers, achieve excellent water absorption performance, improve soil, and reduce loss and leakage

Inactive Publication Date: 2016-04-06
重庆市盛馨种业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for preparing corn stalk fertilizer to solve the problem that corn stalks cannot be used to prepare high water absorption fertilizer at room temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of corn stalk fertilizer comprises the following steps:

[0020] Step (1), pulverizing the corn stalks, treating them at 80° C. for 1 hour, and passing through a 90-120 mesh sieve to obtain corn stalk powder;

[0021] In step (2), the corn stalk powder obtained in step (1) is added with ammonia water with a concentration of 5wt%, soaked for 72 hours, suction filtered, washed with water, dried, and the dried corn stalk powder is added with a concentration of 0.3mol / L Boil the nitric acid solution for 15 minutes, suction filter, rinse and dry;

[0022] Step (3), add concentration 36wt% potassium persulfate solution and concentration 52wt% sodium sulfite solution and neutralization degree to reactor successively under the condition of cold water bath and stirring and acrylic acid solution, acrylamide, polyethylene glycol diacrylic acid Esters, urea, corn stalk powder, the total mass of the concentration of 36wt% potassium persulfate solution and the...

Embodiment 2

[0027] The preparation method of corn stalk fertilizer comprises the following steps:

[0028] Step (1), pulverizing the corn stalks, treating them at 80° C. for 2 hours, and passing through a 120-mesh sieve to obtain corn stalk powder;

[0029] Step (2), the corn stalk powder obtained in step (1) is added with ammonia water with a concentration of 8wt%, soaked for 72 hours, suction filtered, washed with water, dried, and the dried corn stalk powder is added with a concentration of 0.3mol / L Boil the nitric acid solution for 15 minutes, suction filter, rinse and dry;

[0030] Step (3), add concentration 36wt% potassium persulfate solution and concentration 52wt% sodium sulfite solution and the acrylic acid solution that neutralization degree is 70% to reactor successively under cold water bath and stirring condition, acrylamide, polyethylene glycol diacrylate , urea, corn stalk powder, the total mass of the concentration of 36wt% potassium persulfate solution and the concentra...

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Abstract

The invention relates to a preparation method of a corn stalk fertilizer. The method comprises the following steps that corn stalk powder is prepared; a potassium peroxodisulfate with the concentration being 36 wt%, a sodium sulfite solution with the concentration being 52 wt%, an acrylic acid solution with the neutralization being 50-70%, acrylamide, polyethyleneglycol diacrylate, urea and the corn stalk powder are sequentially added into a reactor on the condition of a cold bath and stirring, then, water is added to reach the needed volume, and a monomer phase is obtained; span-60 is added into the reactor, the monomer phase obtained in the third step is slowly added on the condition that nitrogen is introduced, then k2SO3 is added for standing for 20 min, the rotating speed is increased to be subjected to a reaction for 3 h, after the reaction is finished, suction filtration is performed to obtain bead form gel, and vacuum drying is performed at the temperature of 42-48 DEG C for 3-6 h to obtain the powdered corn stalk fertilizer. According to the method, the corn stalk based high-water-absorption fertilizer is prepared at normal temperature, the reaction conditions are mild, energy conservation and environmental protection are achieved at the room temperature, the obtained fertilizer is good in water absorption and water retention, and high in slow-release effect, and the preparation technology is simple and low in price.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a preparation method of corn stalk fertilizer. Background technique [0002] my country feeds 22% of the world's population with 9% of the world's arable land, among which chemical fertilizers contribute about 50% to the increase in grain production, which is indispensable. my country is the largest producer and consumer of chemical fertilizers in the world. The annual output of chemical fertilizers accounts for about 30% of the world's total, and its consumption accounts for 35% of the world's total. The nutrient release speed of traditional chemical fertilizers is fast, and most of the nutrients in fertilizers are easily leached, volatilized, and fixed, and the utilization rate is low. Studies have shown that the average utilization rate of chemical fertilizers in my country is about 30% in the current season. [0003] Slow-release fertilizer production technology has ope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/00C05G3/80
CPCC05C3/00C05G3/00C05G3/80C05G5/12C05C9/00C05D1/00C05F11/00
Inventor 张洪卫
Owner 重庆市盛馨种业有限公司
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