Química Nova | |
Fósforo em cronossequência de cana-de-açúcar queimada no cerrado goiano: análise de ácidos húmicos por RMN de 31P | |
Celeste Q. Rossi2  Marcos G. Pereira2  Andrés C. García2  Adriano Perin1  Paulo R. Gazolla1  Antonio P. González1  | |
[1] ,Universidade Federal Rural do Rio de Janeiro Departamento de Solos Seropédica RJ ,Brasil | |
关键词: humic substances; vinasse; organic phosphorus; | |
DOI : 10.1590/S0100-40422013000800009 | |
来源: SciELO | |
【 摘 要 】
The aim of this study was to identify, with the use of 31P NMR spectroscopy, organic P species in humic acids (HA) in samples from Oxisol cultivated in chronosequence with sugar cane, pasture and Cerrado. The main forms of P-type found were orthophosphate, monoester-P (phosphate sugars) and P-diester (orthophosphate). The 31P NMR technique proved capable of identifying changes in the areas studied as a function of sugar cane burning time. In areas with 1 and 5 years of burnt cane, a decrease in recalcitrant organic P in humic acids indicated the need for use of P-humic substances for plant nutrition.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
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RO202005130064344ZK.pdf | 640KB | download |