摘要
Biochar incorporation into soil has shown potential,in enhancing nitrogen fertilizer(N-fertilizer)efficacy and soil organic carbon content(SOC).This study addresses a critical gap in the literature by investigating the effects of biochar addition over a seven-year period(2014-2020)on inorganic N,SOC,and pH in Haplic Luvisol.The research involved a rain-fed field experiment,with a crop rotation comprising spring barley,maize,spring wheat,and pea.Biochar,applied at the rates of 0,10,and 20 t ha^(−1)in 2014,was reapplied to specific plots in 2018.Biochar was also combined with N-fertilizer at three level(N0,N1,and N2).Results showed a significant interactive influence of biochar and N-fertilizer combination on NO_(3)^(−)and NH_(4)+contents.Intriguingly,the addition of 10 t biochar ha^(−1) consistently decreased soil inorganic N levels across most of the examined months.Increasing biochar application rates led to a significant rise in pH,establishing a clear,negative correlation between soil pH and inorganic N content.Biochar significantly increased SOC compared to the control,particularly after the reapplication in 2018.However,this effect showed a diminishing trend over time.The study suggests that incorporating biochar treatments may enhance N-fertilizer effectiveness.However,the long-term implications of biochar application with N-fertilizer on N mineralization are specific to individual soil and biochar combinations.Except the application of 20 t ha^(−1) biochar at N2 in 2019,biochar did not affect the crop yields.Studied soil properties,including those influenced by biochar had nuanced impact on different aspects of crop yield.
出处
《Biochar》
CSCD
2024年第1期218-234,共17页
生物炭(英文)
基金
funded by the Scientific Grant Agency,grant number VEGA 1/0021/22
the Slovak Research and Development Agency under the contract No.APVV-21-0089
Further,this publication is the result of the project implementation“Sustainable smart farming systems,taking into account the future challenges 313011W112”,co-financed by the European Regional Development Fund.
