Preparation method for urea conversion-promoting humic acid synergistic
US12151992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2019 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Mar 9, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05F11/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing a humic acid-containing synergistic carrier for accelerating urea conversion. The preparation method includes steps of, for example, preparing an extractant for humic acid, preparing a humic acid extract and preparing a humic acid-containing synergistic carrier. Combination of the humic acid-containing synergistic carrier with urea can accelerate urea conversion, and the residual urea rate will be reduced by 22.7%-29.1% than a commercially available urea. The present invention provides a new idea for improving the utilization rate of nitrogen fertilizer in soil with low urease activity. Compared with a commercially available urea, the urea containing the humic acid-containing synergistic carrier of the present invention can increase the rice yield and the utilization rate of nitrogen fertilizer by 9.7% and 8.3%, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.