文献类型：期刊文献

英文题名：Biochar effects on soil nitrogen retention, leaching and yield of perennial citron daylily under three irrigation regimes

作者：Sun, Xiaolei[1,2,3] Yang, Xiaosong[1,4] Hu, Zhengyi[1,9] Liu, Fulai[5] Xie, Zijian[1,4] Li, Songyan[1,5] Wang, Guoxi[1] Li, Meng[6] Sun, Zheng[7,8] Bol, Roland[2]

第一作者：Sun, Xiaolei

通信作者：Hu, ZY[1]

机构：[1]Univ Chinese Acad Sci, Coll Resources & Environm, Sinodanish Coll, Beijing 100049, Peoples R China;[2]Forschungszentrum Julich, Inst Bio & Geosci Agrosphere IBG 3, D-52425 Julich, Germany;[3]Rhein Westfal TH Aachen, Inst Environm Res Biol 5, Worringerweg 1, D-52056 Aachen, Germany;[4]Chinese Res Inst Environm Sci, Natl Engn Lab Lake Pollut Control & Ecol Restorat, Beijing 100012, Peoples R China;[5]Univ Copenhagen, Dept Plant & Environm Sci, Crop Sci Sect, Hojbakkegard Alle 13, DK-2630 Taastrup, Denmark;[6]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[7]UPMC Univ Paris 06, Sorbonne Univ, CNRS, EPHE,UMR METIS 7619, 4 Pl Jussieu, F-75252 Paris 05, France;[8]IFP Energies Nouvelles, Geosci Div, 1 & 4 Ave Bois Preau, F-92852 Rueil Malmaison, France;[9]Sinodanish Ctr Educ & Res, Coll Resources & Environm, Beijing 100190, Peoples R China

年份：2024

卷号：296

外文期刊名：AGRICULTURAL WATER MANAGEMENT

收录：;EI(收录号：20241315811521);Scopus(收录号：2-s2.0-85188520338);WOS:【SCI-EXPANDED(收录号:WOS:001223549100001)】；

基金：The authors are grateful to the China Scholarship Council (CSC:201904910544) . This research was funded by the National Key Research and Development Project (No. 2016YFD0800100-04) and the project for establishment of an indicator system for background investigation of ecological environmental elements (No. 2022FY100101) .

语种：英文

外文关键词：Perennial vegetable; Biochar; Alternate partial root-zone drip irrigation; Soil N balance; Organic nitrogen retention

摘要：Biochar can serve as a soil amendment to immobilize soil nitrogen (N) and reduce N leaching from cropland without negative effect on crop yield. However, the interaction effect of biochar application and irrigation regimes on soil N status (N retention and N loss) and crop yield is rarely reported in the open perennial vegetable field. A two-years field trial (transplanting in first year and consecutive growth in second year) was conducted in citron daylily vegetable cropping system on a sandy brown alluvial soil. Two biochar application rates (0 and 30 t ha -1 ) and three irrigation regimes (CDI, conventional drip irrigation; WSDI, water-saving drip irrigation with 80% of full irrigation quota; APRDI, alternate partial root-zone drip irrigation with 80% of full irrigation quota) were included. The response of crop yield and soil N status to both biochar application and irrigation regimes varied across planting years for perennial citron daylily. After the first planting year 's harvest, APRDI enhanced flower bud yield by 18 -28% compared to CDI and WSDI, likely due to improved nitrate use efficiency evidenced by lower soil nitrate retention in the surface soil (0 -20 cm) post-harvest. However, biochar application resulted in a reduction of yield by 27% under APRDI. Additionally, WSDI with reduced yields, decreased soil TN in the sub-surface layer (20 -50 cm) with 9 -19% by comparison with other two irrigation regimes, resulting in higher TN concentration in the soil solution (14 -28%) in and thus an increased risk for N leaching. However, after the second harvest year, there were no variations in crop yield induced by biochar application and irrigation regimes. Irrigation regimes exhibited limited influence on soil N status, while biochar application mitigated soil nitrogen decline in the 0 -50 cm layer by enhancing organic nitrogen retention capacity for nearly 16 -85%. Furthermore, the lowest TN concentration in the soil solution in the sub-surface layer (20 -50 cm) with biochar application under APRDI suggested a reduced risk for N leaching. We conclude that combining biochar application with the APRDI regime could help retain soil N, decrease the risk of N leaching, and enhance crop yield in total for two consecutive planting years. Therefore, this approach is recommended for sustainable N management in long-term planting of perennial crops.