Details

Autor(en) / Beteiligte

• Shi, Deng-Lin
• Wang, Xiao-Li
• Duan, Jian-Jun
• Liu, An-Kai
• Luo, An-Huan
• Li, Rui-Dong
• Hou, Zai-Fen

Titel

Effects of chemical N fertilizer reduction combined with biochar application on soil organic carbon active components and mineralization in paddy fields of yellow soil.

Ist Teil von

• Ying yong sheng tai xue bao, 2020-12, Vol.31 (12), p.4117-4124

Ort / Verlag

China

Erscheinungsjahr

2020

Quelle

MEDLINE

Beschreibungen/Notizen

• Reducing the application of chemical fertilizer and increasing fertilizer efficiency can contribute to the sustainable development of agriculture. To evaluate the impacts of N fertilizer reduction and biochar application on soil organic carbon active components and mineralization in yellow soil, an experiment was carried out with five different substitution rates of chemical N fertilizer by biochar under the same rate of N input, ., 0, 10%, 20%, 30%, 40% (CK, T -T ). The results showed that chemical N fertilizer reduction combined with biochar application could significantly improve soil organic carbon (SOC), the magnitude of which was proportional to the amount of biochar application. Under the condition of 20% substitution rate (T ), soil microbial biomass carbon (MBC) and readily oxidized carbon (ROC) were the highest with 293.68 mg·kg and 250.00 mg·kg , respectively, but the concentration of soil dissolved organic carbon (DOC) was the lowest. SOC mineralization rate reached the highest on the third day of