The Response of Water-Soluble Organic Carbon to Organic Material Applications in Black Soil
WEI Dan1,4, CAI ShanShan2,3, LI Yan1,4, JIN Liang2, WANG Wei2, LI YuMei2, BAI Yang4, HU Yu41Institute of Plant Nutrition and Resources, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097 2Institute of Soil Fertilizer and Environmental Resources, Heilongjiang Academy of Agricultural Sciences, Harbin 150086 3College of Land and Environment, Shenyang Agricultural University, Shenyang 110866 4College of Resources and Environment, Northeast Agricultural University, Harbin 150030
Abstract 【Objective】The change characteristics of water soluble organic carbon (WSOC) content and components in black soil with the addition of different organic materials were explored to provide a scientific basis for soil fertility improvement methods in black soil area.【Method】This study was based on experimental plots of returning organic materials to the field in Keshan County, Heilongjiang Province, and the experiment has lasted for seven years. The content and structure of WSOC treated with organic fertilizer, biochar, straw and single fertilizer treatment (CK) was analyzed by routine determination and fluorescence analysis.【Result】Compared with the single application of chemical fertilizer, the content of soil water-soluble organic carbon increased by 9.65%-20.30% and soil organic carbon increased by 6.63%-14.86% under the application of organic materials. The contents of tyrosine-like protein and tryptophan-like protein in WSOC decreased under the treatment of organic materials. The application of organic fertilizer increased the contents of metabolites of soluble microorganisms in WSOC, increased the contents of fulvic acid and humic acid in WSOC, and simplified their structures. Straw and biochar simplified the structure of fulvic acids and biochar complicates the structure of humic acids in WSOC.【Conclusion】Organic fertilizer, biochar and straw improved the content of soil water-soluble organic carbon, enhanced the decomposition and metabolism of soil microorganisms, increased the content and simplified the structure of fulvic acid component in water-soluble organic carbon. Organic fertilizer had the best effect. Keywords:black soil;organic material;water-soluble organic carbon;three-dimensional fluorescence spectra;PARAFAC analysis
PDF (2187KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 魏丹, 蔡姗姗, 李艳, 金梁, 王伟, 李玉梅, 白杨, 胡钰. 黑土水溶性有机碳对有机物料还田的响应[J]. 中国农业科学, 2020, 53(6): 1180-1188 doi:10.3864/j.issn.0578-1752.2020.06.010 WEI Dan, CAI ShanShan, LI Yan, JIN Liang, WANG Wei, LI YuMei, BAI Yang, HU Yu. The Response of Water-Soluble Organic Carbon to Organic Material Applications in Black Soil[J]. Scientia Acricultura Sinica, 2020, 53(6): 1180-1188 doi:10.3864/j.issn.0578-1752.2020.06.010
Table 2 表2 表2土壤水溶性有机碳含量及其在总有机碳含量中的占比 Table 2Distribution of WSOC accounting for the proportion of total organic carbon in soil
处理 Treatment
SOC (g·kg-1)
WSOC (mg·kg-1)
WSOC/SOC (%)
NPK
28.10±0.69c
150.23±7.52b
0.53±0.10a
MNPK
32.28±0.66a
180.73±17.09a
0.56±0.06a
BNPK
30.29±0.73b
165.00±8.34ab
0.55±0.04a
SNPK
29.96±0.84b
164.73±4.19ab
0.55±0.02a
*小写字母表示差异显著(P<0.05)。下同 *The values are the means of three replicates (Means±SD). Lowercase letters in each column indicate significant differences at P<0.05. The same as below
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