Multifunctional ecological plastic film composite fertilizer and preparation and use method thereof

A technology of compound fertilizer and mulch, applied in the direction of application, fertilization device, fertilizer mixture, etc., can solve the problems of affecting precipitation infiltration, polluting the ecological environment, singleness, etc., and achieve the effect of inhibiting water evaporation

Inactive Publication Date: 2011-03-16
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 1. At present, in the wheat grass season in rural areas of our country, there is a habit of burning wheat straw in the field in order to save time and trouble, which will pollute the environment, destroy the soil, and more importantly, waste a lot of organic resources; The factory uses wheat straw to make pulp and paper, but actually only uses 40% of the cellulose, and the remaining 60% of the organic resources are discarded along with the black liquor wastewater discharge, and also pollute the ecological environment;
[0003] 2. Most of the fertilizers currently used in agriculture are of single nature and single function, that is, inorganic quick-acting chemical fertilizers or organic fertilizers, which can only be used as topdressing and base fertilizers, but lack the ability to supplement soil nutrients, fertilize soil, and maintain water and soil. Water-saving and water-retaining, it can also improve sandy land, fix the high content of quicksand, and multi-functional new organic compound fertilizer. It is used for desertification and desert land management in my country, land fertilization in industrial and mining reclamation areas, ecological reconstruction, and soil and water conservation and improvement of river and beach land. and restoration of degraded grassland vegetation
[0004] 3. At present, most of the mulch films used in my country's agriculture are plastic mulch films. Although they can increase temperature and preserve moisture, there are problems of non-degradable white pollution of the environment, full coverage of sandy land affecting precipitation infiltration, and problems of few functions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0026] The wheat straw is cut into short sections of 2cm—the above-mentioned cut organic wheat straw that accounts for 70% of the total weight percentage of the multifunctional ecological mulching compound fertilizer and the inorganic nitrogen that accounts for 30% of the total weight percentage of the multifunctional ecological mulching compound fertilizer Phosphate fertilizer: 10% liquid ammonia, 5% urea, 10% phosphoric acid and 5% superphosphate are loaded into 20m 3 Cooking reaction tank—introduce steam, cook and react for 5 hours at a high temperature of 110°C and a high pressure of 0.8mPa—use a filter press to filter the above solution to make a brown multifunctional ecological film compound fertilizer with a concentration of 10%. Solution——In order to facilitate long-distance transportation, the above solution is concentrated to 30% by using an outflow free falling film plate evaporator The finished product is multifunctional ecological mulch compound fertilizer powder....

Embodiment approach 2

[0028] Cut the wheat straw into short sections of 3cm—the above-mentioned cut organic wheat straw that accounts for 75% of the total weight percentage of the multifunctional ecological mulch compound fertilizer is packed into 25m 3 Cooking reaction tank - 9% liquid ammonia, 4% urea, 9% phosphoric acid and 3% superphosphate are loaded into 25m 3 Cooking reaction tank—introduce steam, cook and react for 4 hours at a high temperature of 135°C and a high pressure of 0.65mPa—use a filter press to filter the above solution to make a brown multifunctional ecological film compound fertilizer with a concentration of 11%. Solution——In order to facilitate long-distance transportation, the above solution is concentrated to 35% by using an outflow free falling film plate evaporator. The finished product is multifunctional ecological mulch compound fertilizer powder.

Embodiment approach 3

[0030] Cut the wheat straw into short sections of 4cm—the above cut organic wheat straw, which accounts for 80% of the total weight of the multi-functional ecological mulch compound fertilizer, is packed into 40m 3 Cooking reaction tank - 7% liquid ammonia, 3% urea, 7% phosphoric acid and 3% superphosphate are loaded into 40m by weight percentage respectively accounting for 20% of the total weight of the multifunctional ecological plastic film compound fertilizer 3 Cooking reaction tank—introduce steam, cook and react for 3 hours at a high temperature of 160°C and a high pressure of 0.5mPa—use a filter press to filter the above solution to make a brown multifunctional ecological film compound fertilizer with a concentration of 12%. Solution——In order to facilitate long-distance transportation, the above solution is concentrated to 40% by using an outflow free falling film plate evaporator The finished product is multifunctional ecological mulch compound fertilizer powder.

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Abstract

The invention relates to a multifunctional ecological plastic film compound fertilizer and a preparation method and an application method thereof, relating to the technical fields of farm and sideline products deep processing, novel environmental fertilizer researching, comprehensive utilization of resources, ecological environment engineering, chemical engineering and technology, water and soil conservation, desertification prevention and control and the like. The invention is characterized by putting organic wheat straws which has the length of 2 to 4cm and the weight percentage of 70 to 80percent, and inorganic nitrogen phosphorus fertilizer which has the weight percentage of 20 to 30 percent into a 20-40m<3> cooking and boiling retort, inputting water vapor, cooking and boiling for 3to 5 hours under high temperature and high pressure; filter pressing and extracting fertilizer solution; evaporating and concentrating; modifying and compounding; and sponging drying and preparing a mahogany power product which is the multifunctional ecological plastic film compound fertilizer. The product has the advantages of replenishing soil nutrient, fostering soil productivity, conserving water and soil, saving water and holing water, improving sandlot, fixing the high content of shifting sand, and being capable of being used for national desertification land management, fostering the soil in industrial and mining reclaiming area, ecological rebuilding, water and soil conservation and improvement in river bench land, pejorative grassland vegetation restoration and fertilizer application and water saving in ordinary dry farms.

Description

technical field [0001] The invention relates to a multi-functional ecological mulch compound fertilizer and its preparation and use method, and relates to the technical fields of deep processing of agricultural and sideline products and research on new environment-friendly fertilizers, comprehensive utilization of resources and ecological environment engineering, chemical engineering and technology, water and soil conservation and desertification prevention and control. Specifically, it is a multifunctional ecological mulch organic compound fertilizer that can supplement soil nutrients, fertilize soil, maintain water and soil, save water and water, improve sandy land, fix high content of quicksand, and be degradable. Widely used in my country's sandy desert land management, land fertilization in industrial and mining reclamation areas, agricultural vegetation ecology, pasture production system reconstruction, water and soil conservation and improvement of river and beach land, r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00
Inventor 吕永康何秀院何敏王锐
Owner TAIYUAN UNIV OF TECH
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