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Controlled-release compound fertilizer formed by corn stalks and preparation method thereof

A slow-release compound fertilizer and corn stalk technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of insufficient nutrient requirements and high cost, and achieve the effects of easy transportation and application, low cost, and simple preparation process

Inactive Publication Date: 2018-01-30
SHENYANG AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of slow-release chemical fertilizer has good slow-release properties, it cannot meet the nutrient requirements of initial crop growth, and the cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A slow-release compound fertilizer formed from corn stalks, comprising the following raw materials in parts by weight: 62 parts of corn stalk granules, 18 parts of nitrogen fertilizer, 11 parts of phosphorus fertilizer and 9 parts of potassium fertilizer;

[0042] The preparation method of described slow release compound fertilizer is:

[0043] (1) crushing corn stalks, sieving, and drying at 90° C. for 40 minutes to obtain corn stalk particles, the average particle diameter of the corn stalk particles is 10 mm, and the maximum particle diameter does not exceed 12 mm;

[0044] (2) drying nitrogen fertilizer, phosphorus fertilizer and potash fertilizer at 35° C., and then uniformly mixing with the corn stalk particles obtained in step (1) to obtain a compound fertilizer mixture, the water content of which is 20%;

[0045] (3) Mix the compound fertilizer mixture obtained in step (2), then put it into a stamping molding machine, press the mold until the pressure is 80MPa, ...

Embodiment 2

[0047] A slow-release compound fertilizer formed from corn stalks, comprising the following raw materials in parts by weight: 71 parts of corn stalk granules, 15 parts of nitrogen fertilizer, 8 parts of phosphorus fertilizer and 6 parts of potassium fertilizer;

[0048] The preparation method of described slow release compound fertilizer is:

[0049] (1) crushing corn stalks, sieving, and drying at 140° C. for 20 minutes to obtain corn stalk particles, the average particle diameter of the corn stalk particles is 8 mm, and the largest particle diameter does not exceed 12 mm;

[0050] (2) nitrogen fertilizer, phosphorus fertilizer and potash fertilizer are dried at 45 DEG C, then mixed evenly with the corn stalk particles obtained in step (1), to obtain compound fertilizer mixture, the water content of the compound fertilizer mixture is 15%;

[0051] (3) Mix the compound fertilizer mixture obtained in step (2), and then put it into a stamping molding machine for molding. The sta...

Embodiment 3

[0053] A slow-release compound fertilizer formed from corn stalks, comprising the following raw materials in parts by weight: 65 parts of corn stalk granules, 16 parts of nitrogen fertilizer, 10 parts of phosphorus fertilizer, 8 parts of potassium fertilizer and 1 part of trace element fertilizer;

[0054] The preparation method of described slow release compound fertilizer is:

[0055] (1) crushing corn stalks, sieving, and drying at 130° C. for 25 minutes to obtain corn stalk particles, the average particle diameter of the corn stalk particles is 8 mm, and the maximum particle diameter does not exceed 12 mm;

[0056] (2) Nitrogen fertilizer, phosphorus fertilizer, potash fertilizer and trace element fertilizer are dried at 40 ℃, then mixed evenly with the corn stalk particles obtained in step (1), to obtain compound fertilizer mixture, the water content of the compound fertilizer mixture is 18% ;

[0057] (3) Put the composite fertilizer mixture obtained in step (2) into a ...

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Abstract

The invention relates to a controlled-release compound fertilizer formed by corn stalks and a preparation method thereof. According to the controlled-release compound fertilizer formed by corn stalksdisclosed by the invention, adsorption of corn stalk pulp is utilized, so that nutrients added into the fertilizer are uniformly adsorbed to the peripheries of stalk particles, and a mixed fertilizeris tightly adhered together by hot-press forming. The nutrients are gradually released through decomposition of the stalks, and are completely released until the stalks are completely degraded underground while any microorganism does not need to add or any special condition is not needed, so that the controlled-release compound fertilizer has good slow release feature and wide applicability. The controlled-release compound fertilizer formed by corn stalks is simple in preparation process, and biomass does not need to carbonize or coat; the preparation period is short, and fermentation is not needed; the cost is low, and other additives except from the nutrients do not need to add; and transportation and application are easy.

Description

technical field [0001] The invention belongs to the field of chemical fertilizers, and in particular relates to a slow-release compound fertilizer formed from corn stalks and a preparation method thereof. Background technique [0002] Our country has a large population, so solving the problem of eating has become our country's top priority. Although my country has a lot of cultivated land, due to the large population base in our country, it is imminent to increase the production of grain and the utilization rate of land. Clearly cutting forests for fields to increase the area of ​​arable land is no longer suitable for the current development requirements, but fertilization can be an effective measure to solve this problem. The role of chemical fertilizers in human agricultural production and development cannot be underestimated. However, the long-term use of chemical fertilizers has also made land pollution, air pollution, water pollution and other issues increasingly prom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 宫元娟刘德军黄婉媛高翔董仁杰牛高峰马世骜
Owner SHENYANG AGRI UNIV
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