Yan LI, Yang BAI, Dan WEI, Wei WANG, Yu-mei LI, Hong XUE, Yu HU, Shan-shan CAI. Fluorescence Spectrum Characteristics of Fulvic Acid in Black Soil Under Different Ratios of Organic-Inorganic Fertilizers Combined Application[J]. Spectroscopy and Spectral Analysis, 2021, 41(11): 3518
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 11, 3518 (2021)
Fig. 1. Differences of SOC and FA contents in black soil after combined application of organic and inorganic fertilizers
Note: Lowercase letters represent significant difference (p <0.05)
Note: Lowercase letters represent significant difference (
Fig. 2. Three dimensional fluorescence components of soil FA in different treatments
Peak A: fulvic-acid-like in UV region; Peak C: fulvic-acid-like in visible region; Peak F: humic-acid-like;
Peak T: short wave tryptophan-like (protein-like); Peak T1: long wave tryptophan-like
Peak A: fulvic-acid-like in UV region; Peak C: fulvic-acid-like in visible region; Peak F: humic-acid-like;
Peak T: short wave tryptophan-like (protein-like); Peak T1: long wave tryptophan-like
Fig. 3. RDA of different treatments, fluorescence intensity and soil carbon content
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Table 1. Basic chemical properties of soil
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Table 2. Basic chemical properties of organic fertilizer
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Table 3. Fluorescence spectrum indices of soil FA
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Table 4. Fluorescence intensity and relative percentage of soil FA fluorescence components
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