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Multifunctional soil improved sustained-release environment-friendly fertilizer and preparation method thereof

A soil improvement and multi-functional technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve problems such as soil acidification, achieve scientific and reasonable nutrient distribution ratio, reduce nitrogen fertilizer leaching loss, and stabilize the effect

Active Publication Date: 2012-07-04
范永强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned prior art soil-improving organic-inorganic compound fertilizer and bio-organic fertilizer can increase the organic matter content of the soil to a certain extent, improve the soil aggregate structure, promote crop growth and development, improve the utilization rate of fertilizer, increase crop yield and improve Crop quality, but can not solve my country's current soil acidification and soil calcium, iron and other micronutrient deficiencies; for example, CN101417904B "weathered coal soil salinity improver" has cation substitution effect with soil colloidal sodium, reducing soil sodium ion concentration , can also promote crop growth, but this soil-improving fertilizer is acidic fertilizer, suitable for saline-alkaline soil, not suitable for acidic soil, let alone solve the current soil acidification problem in our country

Method used

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  • Multifunctional soil improved sustained-release environment-friendly fertilizer and preparation method thereof
  • Multifunctional soil improved sustained-release environment-friendly fertilizer and preparation method thereof
  • Multifunctional soil improved sustained-release environment-friendly fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1: multifunctional soil improvement slow-release environment-friendly fertilizer (S), raw material is composed as follows by weight:

[0058] 18 parts of urea, 18 parts of monoammonium phosphate, 32 parts of potassium sulfate, 10 parts of calcium cyanamide.

[0059] According to the proportion, stir calcium cyanamide, urea, monoammonium phosphate and potassium sulfate evenly, add 22 parts of filler, the filler is a combination of bentonite and attapulgite in a weight ratio of 1:1, after mixing evenly, use extrusion to granulate, pack Produce total nutrients ≥ 36% (N-P 2 o 5 -K 2 O, 12-8-16) multifunctional soil improvement slow-release environmental protection fertilizer (S).

Embodiment 2

[0060] Embodiment 2: multifunctional soil improvement slow-release environment-friendly fertilizer, raw materials are composed as follows by weight:

[0061] 18 parts of urea, 18 parts of monoammonium phosphate, 26 parts of potassium chloride, and 10 parts of calcium cyanamide.

[0062] According to the proportion, calcium cyanamide, urea, monoammonium phosphate and potassium chloride are stirred evenly, and 28 parts of filler are added. The filler is a combination of bentonite and attapulgite in a weight ratio of 1:1. After mixing, extrusion granulation is used. Packaged total nutrients ≥ 36% (N-P 2 o 5 -K 2 O, 12-8-16) multifunctional soil improvement slow-release environment-friendly fertilizer (CL).

Embodiment 3

[0063] Embodiment 3: multifunctional soil improvement slow-release environment-friendly fertilizer, raw materials are composed as follows by weight:

[0064] 20 parts of urea, 18 parts of monoammonium phosphate, 32 parts of potassium sulfate, and 15 parts of calcium cyanamide.

[0065] According to the proportion, stir calcium cyanamide, urea, monoammonium phosphate and potassium sulfate evenly, add 15 parts of filler, the filler is a combination of bentonite and attapulgite at a weight ratio of 1:1, and after mixing, use extrusion to granulate, pack The total nutrient obtained is ≥38% (N-P 2 o 5 -K 2 O, 14-8-16) multifunctional soil improvement slow-release environmental protection fertilizer (S).

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Abstract

The invention relates to a multifunctional soil improved sustained-release environment-friendly fertilizer and a preparation method thereof. The sustained-release environment-friendly fertilizer is prepared from the following raw materials in part by weight through adopting the dry extruding and pelleting technology: 16 to 25 parts of urea, 17 to 19 parts of monoammonium phosphate, 25 to 35 parts of potassium sulfate or potassium chloride, 8 to 12 parts of calcium cyanamide and 18 to 30 parts of filler. According to crop production in China and the current situation of soil, scientific proportion is realized, adaptability of the raw materials is high, the adding amount of urea is less than 20 percent, and drying and cooling procedures are not required during preparation. The multifunctional soil improved sustained-release environment-friendly fertilizer has a stable effect and high utilization ratio of nutrients, and can improve soil, promote growth of crops and improve yield and quality of the crops.

Description

technical field [0001] The invention relates to a slow-release fertilizer, in particular to a soil-improving slow-release environment-friendly fertilizer and a preparation method thereof. Background technique [0002] At present, the total output of compound fertilizer in my country (2010) is about 53 million tons, an increase of about 7% over the previous year. It is expected that the output of compound fertilizer in my country will still maintain a certain growth rate in 2011, and the growth rate will accelerate, which is expected to exceed 8%. The internationally recognized safe upper limit of chemical fertilizer application is 225 kg / ha (pure nutrients, the same below), but currently the average amount of agricultural chemical fertilizer applied per unit area in my country has reached 434.3 kg / ha, which is 1.93 times the safe upper limit. The utilization rate of nitrogen fertilizer in our country is about 27.5%, which is less than half of that of developed countries and ...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 范永强
Owner 范永强
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