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

Double-membrane double-control slow release fertilizer

A controlled and slow-release fertilizer technology, applied in the field of slow-release fertilizers, can solve the problems of not achieving long-acting effects and short release periods

Inactive Publication Date: 2013-04-03
石家庄市中嘉化肥有限公司
View PDF7 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The release period is relatively short, and the long-term effect cannot be achieved

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
  • Double-membrane double-control slow release fertilizer
  • Double-membrane double-control slow release fertilizer
  • Double-membrane double-control slow release fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with technical points and crop experiment examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0013] The embodiment of the present invention provides a double-film double-control slow-release fertilizer. The double-film double-control slow-release fertilizer is a double-coated urea formed by wrapping large particles of urea in sulfur and then wrapping a water-soluble resin material, and adding urease to inhibit it. It is a slow-release fertilizer blended with stabilized compound fertilizers of additives and nitrification inhibitors. The double-coated urea controls the release of nitrogen fertilizer from urea, and the stable NPK compound fertilizer controls the release of nitrogen fertili...

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 double-membrane double-control slow release fertilizer. The slow release fertilizer is prepared by wrapping urea by using sulphur and further wrapping by using a layer of soluble resin, and mixing the urea of a double-membrane material with a stable composite fertilizer, wherein the fertilizer nutrient release period can be 130 days, the release rate of 25 days can be 30%, and the release rate of 120 days can be more than 85%; the urea wrapped by double membranes is used for controlling the release of a urea state nitrogenous fertilizer, the release of the nitrogenous fertilizer is controlled and the utilization rate of a phosphatic fertilizer is increased through the stable fertilizer; the slow release fertilizer is longer and slower in action; for ordinary crops, the effect that the fertilizer is applied once without further fertilization is achieved; the utilization rate of the nitrogenous fertilizer is increased by 15%; and the utilization rate of the phosphatic fertilizer is increased by 12%. The urea inhibition ratio is 30%, the nitrogenous fertilizer nitration inhibition ratio is 25%; the wrapping membrane material can be degraded within 150 days; and meanwhile sulfur element is supplemented for the soil.

Description

technical field [0001] The invention belongs to the technical field of slow-release fertilizers, in particular to a double-film double-control slow-release fertilizer. Background technique [0002] In the existing technical production, because it is more technical than single-packed sulfur, the required equipment and facilities are more complicated, and the resin film material must be water-soluble, so the cost is higher than that of slow-release fertilizers. The cost of release fertilizer is nearly 200 yuan per ton higher than the promotion of field crops. But it can be widely promoted in cash crops, various fruits and vegetables and precision agriculture. [0003] Existing slow-release fertilizers are made by mixing sulfur-coated urea (or resin-coated urea) with ordinary compound fertilizers. The nutrient release period of the fertilizer is 100 days, and the release rate reaches about 50% in 25 days. The release period is relatively short, and the long-term effect cannot...

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): C05G3/00C05G3/08C05G5/00C05G3/90
CPCY02P60/21
Inventor 张培升
Owner 石家庄市中嘉化肥有限公司
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