| Autor: |
LI, S. Y., CHEN, X. W., DOU, S., ZHANG, Y. F., MA, R., ZHANG, B. Y., HAN, L., NI, L. |
| Předmět: |
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| Zdroj: |
Applied Ecology & Environmental Research; 2022, Vol. 20 Issue 1, p785-799, 15p |
| Abstrakt: |
In order to mitigate the degradation of black soil organic matter, this paper designed a field microplot experiment with different proportional mixtures of corn straw and peat with an equal carbon amount. Treatments included (ⅰ) no organic materials applied (CK), (ⅱ) Application of peat (P), (ⅲ) Peat and corn straw are 2:1(2/3P), (ⅳ) Peat and corn straw are 1:2(1/3P) and (ⅴ) Application of corn straw (0P). The humus composition and humic acid (HA) structural characteristics of black soil were studied using elemental analysis, Fourier transform infrared (FTIR) spectroscopy, fluorescence spectrum and thermogravimetric analysis. The results demonstrated that water-soluble substances carbon (WSS-C) content increased with the increase of straw application amount, SOC, humification rate (PQ) and carbon content of other humus fractions increased with the increase of peat application amount. In addition, the higher peat applied, the stronger the aromatic nature of HA structure, the more stable and complex the structure of HA, the higher corn straw applied, the stronger the aliphatic nature of HA structure, and the simpler the structure of HA. With the consideration of the humus composition and HA structural characteristics of black soil, the appropriate ratio of the application of corn straw and peat deemed 2:1. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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