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Method for preparing rice compound fertilizer for relieving soil hardening

A technology for improving soil and compound fertilizer, applied in the field of compound fertilizer, can solve the problems of inconvenient fertilization in different times, large fertilizer demand, soil compaction, etc., and achieve long-term nitrogen fertilizer slow-release effect, less nitrogen fertilizer usage, and good slow-release performance. Effect

Inactive Publication Date: 2018-10-12
望江县国新米业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the coating is to slowly release the quick-acting nutrients in the coated fertilizer after it is applied to the soil, so as to prolong the fertilizer effect, and it is suitable for rice with high economic value, long growth period, large amount of fertilizer but inconvenient fertilization in batches , most of the existing coated fertilizers have poor water holding capacity and are likely to cause technical problems of soil compaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing rice compound fertilizer for improving soil compaction, comprising the steps of:

[0019] S1. Mix 10kg of phosphomolybdic acid, 0.8kg of ammonium chloride, and 1.2kg of polyvinyl alcohol, add 60kg of 65wt% ethanol aqueous solution, heat up to 70°C, react for 1h, filter, dry, then add 130kg of water and stir for 20min, stir The temperature is 100°C, add 0.4kg diethylamine, 10kg phytic acid and continue to stir for 5 minutes, add 0.2kg ammonium persulfate, adjust the pH of the system to 6.1-6.4 with 0.2mol / L hydrochloric acid, filter, wash, dry and pulverize get prefabricated material;

[0020] S2. Mix 80kg of prefabricated material, 15kg of meat and bone meal, 28kg of potassium dihydrogen phosphate, 0.4kg of zinc humate, 6kg of biogas residue, and 1kg of medical stone powder, pulverize, pass through a 200-mesh sieve, granulate, preheat for 2 minutes, and preheat The temperature is 50 DEG C, and 1kg of palm oil is sprayed therein under stirring sta...

Embodiment 2

[0022] A method for preparing rice compound fertilizer for improving soil compaction, comprising the steps of:

[0023] S1. Mix 15kg phosphomolybdic acid, 0.4kg ammonium chloride, and 2.4kg polyvinyl alcohol, add 40kg of 85wt% ethanol aqueous solution, heat up to 60°C, react for 2h, filter, dry, then add 100kg of water and stir for 30min, stir The temperature is 90°C, add 1.4kg diethylamine, 2kg phytic acid and continue to stir for 12min, add 0.1kg ammonium persulfate, adjust the pH of the system to 6.1-6.4 with 0.5mol / L hydrochloric acid, filter, wash, dry and pulverize get prefabricated material;

[0024] S2. Mix 40kg of prefabricated material, 24kg of meat and bone meal, 20kg of potassium dihydrogen phosphate, 1.2kg of zinc humate, 2kg of biogas residue, and 5kg of medical stone powder, pulverize, pass through a 100-mesh sieve, granulate, preheat for 4 minutes, and preheat The temperature is 40 DEG C, spray 4kg of palm oil therein under stirring state, then add 1kg of coat...

Embodiment 3

[0026] A method for preparing rice compound fertilizer for improving soil compaction, comprising the steps of:

[0027] S1. Mix 12kg of phosphomolybdic acid, 0.7kg of ammonium chloride, and 1.6kg of polyvinyl alcohol, add 55kg of 70wt% ethanol aqueous solution, heat up to 66°C, react for 1.3h, filter, dry, then add 120kg of water and stir for 22min, The stirring temperature is 97°C, add 0.8kg diethylamine, 8kg phytic acid and continue stirring for 8 minutes, add 0.18kg ammonium persulfate, adjust the pH value of the system to 6.1-6.4 with a concentration of 0.3mol / L hydrochloric acid, filter, wash, and dry. Pulverize to obtain prefabricated material;

[0028] S2. Mix 70kg of prefabricated material, 18kg of meat and bone meal, 26kg of potassium dihydrogen phosphate, 0.6kg of zinc humate, 5kg of biogas residue, and 2kg of medical stone powder, pulverize, pass through a 180-mesh sieve, and granulate. Preheat for 2.5 minutes. The heat temperature is 48°C, spray 2kg of palm oil th...

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PUM

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Abstract

The invention discloses a method for preparing a rice compound fertilizer for relieving soil hardening. The method comprises the following steps that phosphomolybdic acid,ammonium chloride and polyvinyl alcohol are mixed,ethanol water is added,heating and reacting are carried out,and filtering and drying are carried out; then water is added to be stirred,diethylamine and phytic acid are added,stirring continues to be carried out,ammonium persulfate is added,and the pH value of the system is adjusted to range from 6.1 to 6.4; filtering,washing,drying and smashing are carried out,and pre-prepared materials are obtained; the pre-prepared materials,meat and bone meal,monopotassium phosphate,zinc humate,biogas residues and medical stone powder are mixed to be uniform,smashing,screening,prillingand preheating are carried out,palm oil is sprayed into the mixture with stirring,then a coating agent is added for even coating,discharging and air drying are carried out,and the rice compound fertilizer for relieving soil hardening is obtained. The obtained compound fertilizer contains all nutrient elements needed by growth of rice,is good in water holding capacity,nutrient preserving capability and slow release performance,can effectively improve the soil structure and is remarkable in rice yield increasing and quality improving effect.

Description

technical field [0001] The invention relates to the technical field of compound fertilizers, in particular to a method for preparing rice compound fertilizers for improving soil compaction. Background technique [0002] Coated fertilizers are also called coated fertilizers and film fertilizers. Fertilizers made of quick-acting fertilizer granules wrapped with semi-permeable or impermeable film substances. Film-forming substances include plastics, resins, paraffin, polyethylene and elemental sulfur. The purpose of the coating is to slowly release the quick-acting nutrients in the coated fertilizer after it is applied to the soil, so as to prolong the fertilizer effect, and it is suitable for rice with high economic value, long growth period, large amount of fertilizer but inconvenient fertilization in batches , most of the existing coated fertilizers have poor water holding capacity and are likely to cause technical problems of soil compaction. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B7/00C05G3/80C05G5/12C05G5/30C05B17/00C05C3/00C05D9/00C05F1/00C05F9/04C05F11/02C05G3/00
Inventor 陈华东
Owner 望江县国新米业有限公司