Humic acid synergistic slow-release compound fertilizer and preparation method thereof

A slow-release compound fertilizer and humic acid technology, which is applied in the preparation of organic fertilizers, urea compound fertilizers, ammonium orthophosphate fertilizers, etc. problems, to slow down the rate of hydrolysis and nitrification, increase reducing sugar and Vc, and prolong the release time of nutrients

Active Publication Date: 2015-01-14
HUBEI XIANGYUN GROUP CHEM
View PDF6 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

People have used a large amount of inorganic fertilizers for a long time, coupled with improper use methods, the fertilizer rate is not high, resulting in a large amount of fertilizer loss, polluting the soil and water, and reducing the stress resistance of crops, which seriously threatens the sustainable development of agriculture.
A variety of chemical and physical methods have been proposed to solve the problem of fast dissolution and low utilization of nitrogen fertilizers by exploring, and slowing down the decomposition and conversion of nitrogen by adding long-acting slow-release agents to fertilizers and inhibiting the activity of certain enzymes in the soil is An Effective Way to Improve Fertilizer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 provides a humic acid synergistic slow-release compound fertilizer, which is prepared from the following raw materials: 360 kg of ammonium chloride (containing N25%), monoammonium phosphate (containing N11%, P 2 o 5 44%) 350 kg, potassium chloride (containing K 2 O60%) 220 kg, chelated zinc powder 8 kg, chelated calcium powder 5 kg, borax 5 kg, chelated manganese powder 2 kg, biological humic acid 50 kg, urea (containing N46%) 120 kg, controlled release agent 0.9 Kilogram. Its preparation steps are as follows:

[0034] (1) Mix the measured ammonium chloride, monoammonium phosphate, potassium chloride, chelated zinc powder, chelated calcium powder, borax, chelated manganese powder, and biological humic acid evenly, and send the mixture into the drum through the belt Granulator.

[0035] (2) After crushing the urea, heat it to form a urea slurry, add the controlled release agent and mix well, and spray it on the material through the pipe nozzle.

[0036] (3) ...

Embodiment 2

[0039] Example 2 provides a humic acid synergistic slow-release compound fertilizer, which is prepared from the following raw materials: 310 kg of ammonium chloride (containing N25%), diammonium phosphate (containing N15%, P 2 o 5 47%) 394 kg, potassium chloride (containing K 2 O60%) 158 kg, chelated calcium powder 15 kg, borax 10 kg, chelated molybdenum powder 2 kg, biological humic acid 75 kg, urea (containing N46%) 132 kg, controlled release agent 1 kg.

[0040] (1) Mix the measured ammonium chloride, diammonium phosphate, potassium chloride, chelated calcium powder, borax, chelated molybdenum powder, and biological humic acid evenly, and send the mixture into the drum granulator through the belt.

[0041] (2) After crushing the urea, heat it to form a urea slurry, add the controlled release agent and mix well, and spray it on the material through the pipe nozzle.

[0042] (3) One-stage drying, two-stage cooling and coarse and fine screening are adopted, and the particles...

Embodiment 3

[0045] Example 3 provides a humic acid synergistic slow-release compound fertilizer, which is prepared from the following raw materials: 310 kg of ammonium chloride (containing N25%), monoammonium phosphate (containing N11%, P 2 o 5 44%) 315 kg, potassium chloride (containing K 2 O60%) 145 kg, chelated zinc powder 10 kg, chelated calcium powder 5 kg, borax 5 kg, chelated magnesium powder 10 kg, biological humic acid 62 kg, urea (containing N46%) 210 kg, controlled release agent 1.6 Kilogram.

[0046] (1) Mix the measured ammonium chloride, monoammonium phosphate, potassium chloride, chelated zinc powder, chelated calcium powder, borax, chelated magnesium powder, and biological humic acid evenly, and send the mixture into the drum through the belt Granulator.

[0047] (2) After crushing the urea, heat it to form a urea slurry, add the controlled release agent and mix well, and spray it on the material through the pipe nozzle.

[0048] (3) One-stage drying, two-stage cooling...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a humic acid synergistic slow-release compound fertilizer and a preparation method thereof and belongs to the technical field of slow-release compound fertilizers. The fertilizer is prepared from the following raw materials in parts by weight: 15-45 parts of nitrogen fertilizer, 15-35 parts of phosphorus fertilizer, 10-25 parts of potassium fertilizer, 1-10 parts of medium trace elements, 5-15 parts of biological humic acid and a controlled-release agent, wherein the nitrogen fertilizer raw material comprises urea which accounts for 8-25% of total weight, the addition of the controlled-release agent is 0.7-0.9% the weight of urea, the controlled-release agent is prepared by mixing an urease inhibitor and a nitrification inhibitor in a weight ratio of 1 to (0.5-1), and biological humic acid is prepared by fermenting crushed bagasse and animal waste by using a special microbial agent. Biological humic acid which has the advantages of small molecular weight, strong activity, good solubility and the like is added into the compound fertilizer, and the controlled-release agent and biological humic acid are combined by using a method of combining amino acid granulation and urea-based guniting, so that the fertilizer conserving and supply condition of soil is improved while the utilization rate of the fertilizer is improved.

Description

technical field [0001] The invention belongs to the technical field of slow-release compound fertilizers, in particular to a humic acid synergistic slow-release compound fertilizer and a preparation method thereof. Background technique [0002] As an important agricultural product, chemical fertilizer plays a significant role in increasing crop yield and is an indispensable factor of production in modern agriculture. People have used a large amount of inorganic fertilizers for a long time, coupled with improper use methods, the fertilizer rate is not high, resulting in a large amount of fertilizer loss, pollution of soil and water, and the decline of crop resistance, which seriously threatens the sustainable development of agriculture. A variety of chemical and physical methods have been proposed to solve the problem of fast dissolution and low utilization of nitrogen fertilizers by exploring, and slowing down the decomposition and conversion of nitrogen by adding long-actin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C05G3/08C05G3/90
CPCC05B7/00C05D1/00C05F17/00C05G3/90C05G5/30C05D9/00C05F3/00C05F5/002C05G1/00C05C3/00C05C9/00C05D1/02Y02P60/21
Inventor 何海勇张雄风李斌刘若伟查炎华胡玉峰
Owner HUBEI XIANGYUN GROUP CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products