Fertilizer of chelated zinc, and preparation method

A technology for chelating zinc and chelating agents, which is applied in the field of chemical fertilizers in agricultural science and technology, can solve the problems of EDTA's adverse effects on plants, high price, and low stability constant, and achieve the effects of low cost, good quality, and moderate stability

Inactive Publication Date: 2007-10-10
吴礼树
View PDF0 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditionally used chelated zinc includes EDTA-Zn, zinc citrate and amino acid zinc. In addition to being expensive, EDTA-Zn and zinc citrate also have adverse effects on plants caused by EDTA
Although

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 Construction

[0017] Specific embodiments of the present invention will be described in detail below.

[0018] After getting the inorganic zinc raw material, the chelating agent and the catalyzer of the mass percent shown in the following table 1 and fully mixing each other, carry out the first solid-phase reaction and the second solid-phase reaction according to the operating parameters shown in the following table 1, and obtain The invention relates to a chelated zinc fertilizer.

[0019] Material mass percentage

content

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Total Inorganic Zinc

58

60

62

64

66

69

Total Chelating Agents

34

32

30

40

38

36

total catalyst

1.8

2

1.6

1.2

1.4

1.0

first solid phase reaction

time (hours)

8

10

13

16

1...

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

This invention relates to a chelated zinc fertilizer, which is prepared from: catalyst 1-2 wt. %, inorganic zinc raw material 58-69 wt. %, and chelating agent 30-40 wt. %. The chelating agent is composed of: oxalic acid 5-10 wt.%, malic acid 8-20 wt.%, citric acid 15-25 wt.%, maleic acid 10-25 wt.%, sorbitol 3-8 wt.%, gallic acid 8-10 wt.%, and lactic acid 2-8 wt.%. The catalyst is composed of: gadolinium chloride 0.1-0.35 wt.%, selenium dioxide 0.1-0.2 wt.%, chalcanthite 0.05-0.1 wt.%, KOH 0.05-0.1 wt.%, potash 0.1-0.2 wt.%, and palladium carbonate 0.05-0.2 wt.%. The chelating agent has appropriate stability and low cost, and can chelate with zinc in solid state. This invention also relates to a method for preparing the chelated zinc fertilizer, which specifies the process parameters, and appropriate catalyst and reaction conditions.

Description

technical field [0001] The invention relates to the field of chemical fertilizers in agricultural science and technology, in particular to a chelated zinc fertilizer and a preparation method thereof. Background technique [0002] Whether it is the calcareous soil in the north or the acidic soil in the south, there is a large area of ​​zinc deficiency, and the crops sensitive to zinc are more extensive. In addition to fruit trees and vegetables, gramineous crops are also very sensitive to zinc. Among them, rice and Corn is the most sensitive, and gramineous crops are the most important crops in agricultural production, so it is particularly important to solve the problem of zinc deficiency. [0003] The way to solve zinc deficiency in crops is to apply zinc fertilizer to soil or foliage. The most commonly used traditional zinc fertilizer is zinc sulfate. The application of zinc sulfate is different from iron and calcium, and generally has a better effect, but it still 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): C05D9/00
Inventor 吴礼树吴丹易妍睿
Owner 吴礼树
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap