Effects of long-term application of various organic amendments on soil particulate organic matter storage and chemical stabilisation of vertisol soil
文献类型： 外文期刊
作者： Hua, Keke 1 ; Wang, Daozhong 1 ; Guo, Zhibin 1 ;
作者机构： 1.Anhui Acad Agr Sci, Soil & Fertilizer Res Inst, Anhui Prov Key Lab Nutrient Recycling Resources &, 40 Nongke South Rd, Hefei 230031, Anhui, Peoples R China
关键词： Particulate organic matter; long-term fertilisation; C-13-NMR; soil profile; vertisol
期刊名称：ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE （ 影响因子：1.694； 五年影响因子：1.568 ）
ISSN： 0906-4710
年卷期： 2018 年 68 卷 6 期
页码：
收录情况： SCI
摘要： Current understanding of the effects of long-term application of various organic amendments on soil particulate organic matter (POM) storage and chemical stabilisation remains limited. Therefore, we collected soil samples from the soil profile (0-100cm) under six treatments in a 31-year long-term fertilisation experiment: no fertiliser (CK), mineral fertilisers (NPK), mineral fertilisers plus 3.8 or 7.5tha(-1)year(-1) (fresh base) the amount of wheat straw (1/2SNPK and SNPK) and mineral fertilisers plus swine or cattle manure (PMNPK and CMNPK). Long-term incorporation of wheat straw and livestock manure amendments significantly (p<0.05) increased crop yield and sustainable yield index, and POM storage compared with CK and NPK treatments. The mole ratios of H/C in the POM under organic amendment treatments significantly (p<0.05) decreased by 13.8% and 37.1%, respectively, compared with the NPK treatment. Similarly, solid state NMR spectroscopy showed that the O-alkyl carbon content of POM was greatly decreased, whereas aromatic carbon contents and alkyl to O-alkyl carbon ratios were substantially increased under PMNPK and CMNPK treatments. In conclusion, we recommend long-term livestock manure application as a preferred strategy for enhancing POM quantity and quality (chemical stability), and crop yield of vertisol soil in northern China.
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