Fluorescence Spectrum Characteristics of DOC in Black Soil Under Organic Substitution of Chemical Nitrogen Fertilizer

Jiu-ming ZHANG; En-jun KUANG; Feng-qin CHI; Yi-dan LIU; Bao-ku ZHOU; Xiao-yu XIA; Xiao-jun WANG; Lei SUN; Ben-chao CHANG; Dan WEI

doi:10.3964/j.issn.1000-0593(2022)09-2919-05

Spectroscopy and Spectral Analysis, Volume. 42, Issue 9, 2919(2022)

Fluorescence Spectrum Characteristics of DOC in Black Soil Under Organic Substitution of Chemical Nitrogen Fertilizer

Jiu-ming ZHANG1,*... En-jun KUANG1,1;, Feng-qin CHI1,1; *;, Yi-dan LIU4,4;, Bao-ku ZHOU1,1;, Xiao-yu XIA3,3;, Xiao-jun WANG1,1;, Lei SUN1,1;, Ben-chao CHANG1,1; and Dan WEI2,2; |Show fewer author(s)

Author Affiliations

¹1. Institute of Soil, Fertilizer and Environmental Resources, Key Laboratory of Black Soil Protection and Utilization, Ministry of Agriculture and Rural Affairs, Harbin 150086, China

²2. Institute of Plant Nutrition and Environmental Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China

³3. Soybean Research Institute of Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China

⁴4. College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China

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Figures & Tables(8)

Fig. 1. Soil DOC content under different treatments

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Fig. 2. Three-dimensional fluorescence spectra of DOC
(a): CK; (b): M; (c): M₁N₁; (d): M₂N₂; (e): N treatments

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Fig. 3. Fluorescent components of soil water-soluble organic carbon
(a): Component 1; (b): Component 2; (c): Component 3

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Table 1. Basic chemical properties of soil
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Table 1. Basic chemical properties of soil
有机质/
(g·kg^-1) 全氮/
(g·kg^-1) 全磷/
(g·kg^-1) 全钾/
(g·kg^-1) 碱解氮/
(mg·kg^-1) 速效磷/
(mg·kg^-1) 速效钾/
(mg·kg^-1)
41.2 2.2 1.6 29.0 188.9 23.0 201.0

Table 2. Application amount of N, P₂O₅, K₂O and organic fertilizer in each treatment
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Table 2. Application amount of N, P₂O₅, K₂O and organic fertilizer in each treatment
处理有机肥/
(kg·hm^-2) 氮肥/
(kg·hm^-2) 磷肥/
(kg·hm^-2) 钾肥/
(kg·hm^-2)
CK 0 0 0 0
M 1 500 0 33.75 15.00
M₁N₁ 750 37.50 54.37 26.25
M₂N₂ 375 56.25 64.69 31.87
N 0 75.00 75.00 37.50

Table 3. Fluorescence spectrum indices of soil DOC

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Table 3. Fluorescence spectrum indices of soil DOC

处理	FI₃₇₀	BIX	HIX
CK	1.55±0.01 b	0.67±0.02 c	0.83±0.01 bc
M	1.58±0.01 a	0.68±0.01 bc	0.84±0.01 ab
M₁N₁	1.54±0.03 b	0.69±0.02 bc	0.83±0.01 bc
M₂N₂	1.58±0.02 a	0.67±0.01 c	0.84±0.01 a
N	1.58±0.01 a	0.69±0.01 b	0.82±0.02 c

Table 4. Characteristics of different component identified

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Table 4. Characteristics of different component identified

组分(λ_ex/λ_em)/nm	基本描述	参考峰(λ_ex/λ_em)/nm	荧光峰类型
C1 240(320)/410 nm	紫外光区类富里酸可见光区类富里酸	(230~260 nm) /(380~460 nm) (290~330 nm) /(370~420 nm)	峰A 峰M
C2 270(360)/470 nm	类腐殖质(胡敏酸)	(230~260 nm)/(380~460 nm) (320~360 nm)/(420~460 nm)	峰A 峰C
C3 220(280)/330 nm	类酪氨酸(类蛋白质)	(270~280 nm) /(320~330 nm) (220~230 nm)/(320~330 nm)	峰B 峰D

Table 5. Fluorescence intensity of organic components of soil DOC

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Table 5. Fluorescence intensity of organic components of soil DOC

处理	Component 1	Component 2	Component 3	总组分荧光强度和
CK	1 739.66±37.21 c	1 096.18±31.58 c	669.40±30.89 c	3 505.23±79.34 c
M	1 990.73±76.09 a	1 357.25±59.43 a	747.48±35.80 b	4 095.46±99.01 a
M₁N₁	1 711.72±80.63 c	1 109.99±48.05 c	706.81±39.73 bc	3 528.51±166.34 c
M₂N₂	1 752.59±71.38bc	1 199.48±46.48 b	872.03±49.62 a	3 824.10±145.19 b
N	1 879.71±72.00 ab	1 216.34±57.14 b	680.24±14.69 c	3776.28±125.89 b

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Jiu-ming ZHANG, En-jun KUANG, Feng-qin CHI, Yi-dan LIU, Bao-ku ZHOU, Xiao-yu XIA, Xiao-jun WANG, Lei SUN, Ben-chao CHANG, Dan WEI. Fluorescence Spectrum Characteristics of DOC in Black Soil Under Organic Substitution of Chemical Nitrogen Fertilizer[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2919

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