Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Compound slow-release nitrogen fertilizer

A technology of nitrogen fertilizer and ammonium nitrogen, applied in fertilization equipment, fertilizer mixture, application, etc., can solve the problems of nitrogen fertilizer loss, inability to extend the validity period of nitrogen fertilizer, and inability to improve nitrogen fertilizer utilization rate

Inactive Publication Date: 2014-06-11
AVIC FERTILIZER
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it can only promote the absorption of nitrogen by crops, but cannot extend the validity period of nitrogen fertilizer itself, so it will not be able to improve the utilization rate of nitrogen fertilizer, and there is still a large amount of nitrogen fertilizer loss

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Compound slow-release nitrogen fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In a disc granulator, add 10 kg of powdered ammonium chloride and 10 kg of powdered oxamide in the storage hopper above the disc granulator.

[0039] Rotate the ammonium chloride in the disc granulator, spray 1-2kg of water to the surface of ammonium chloride through the high-pressure atomizing nozzle, and when the ammonium chloride has some viscosity, open the storage head and add oxalamide to the ammonium chloride at a uniform speed , the rotation speed of the disc in the disc granulator is 50-70r / min, and then the obtained mixture is sieved and dried at a temperature of 50°C-120°C to obtain a diameter of 2mm-4.5mm, strength The spherical slow-release nitrogen fertilizer particles of 10N-100N will last for 50-100 days for the corresponding nitrogen release period.

Embodiment 2

[0041] In a disc granulator, add 10 kg of powdered ammonium sulphate and 10 kg of powdered oxamide in the storage hopper above the disc granulator.

[0042] Rotate the ammonium sulfate in the disc granulator, and spray 1-2kg of water on the surface of ammonium sulfate through the high-pressure atomizing nozzle. The rotation speed of the disc in the granulator is 50-70r / min, and then the obtained mixture is sieved and dried at a temperature of 50°C-120°C to obtain a pellet with a diameter of 2mm-4.5mm and a strength of 10N-100N The spherical slow-release nitrogen fertilizer granules, corresponding to the nitrogen release period, will last for 50-100 days.

Embodiment 3

[0044] In a disk granulator, add 10kg of powdery ammonium sulfate and 20g of dicyandiamide and mix well, and add 10kg of powdery oxamide in the storage hopper above the disk granulator.

[0045] Rotate the ammonium sulfate in the disc granulator, and spray 1-2kg of water on the surface of ammonium sulfate through the high-pressure atomizing nozzle. The rotation speed of the disc in the granulator is 50-70r / min, and then the obtained mixture is sieved and dried at a temperature of 50°C-120°C to obtain a pellet with a diameter of 2mm-4.5mm and a strength of 10N-100N The spherical slow-release nitrogen fertilizer particles corresponding to the nitrogen release period will last for 70 to 120 days.

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a compound slow-release nitrogen fertilizer, which comprises 0.1-95 percent by mass of oxamide, 0-5 percent by mass of inhibitor and 0-95 percent of nitrogen fertilizer. By adopting the oxamide, inhibitor and nitrogen fertilizer in the compound slow-release nitrogen fertilizer, the applied nitrogen fertilizer is effectively prevented from being brought away by water, nitrogen is kept in soil in the presence of the inhibitor, loss due to excessive conversion is prevented, the own shelf life of the nitrogen fertilizer is prolonged remarkably, and the utilization ratio of the nitrogen fertilizer is increased, thereby ensuring slow release supply of nitrogen needed in the entire growing period.

Description

technical field [0001] The invention relates to the field of agricultural chemicals, in particular to a composite slow-release nitrogen fertilizer. Background technique [0002] In various agricultural production activities, nitrogen fertilizers are usually applied to the soil to increase crop yields. However, the nitrogen fertilizer in the soil is quickly ammolyzed by nitrification, and the resulting nitrate is quickly washed away from the soil to pollute the environment, and the washed away part can no longer be used for crop nutrition, resulting in lower nitrogen use efficiency. [0003] However, although various traditional nitrogen fertilizers try to improve the utilization rate of nitrogen in nitrogen fertilizers through various methods, for example, adding polyamic acid synergists on the basis of traditional urea, to strengthen the crops' nitrogen, phosphorus, Absorption of potassium and trace elements. [0004] However, it can only promote the absorption of nitrog...

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): C05G3/00
Inventor 张肖飞郭长青李清霞秦爱国姜琳琳
Owner AVIC FERTILIZER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com