Winter hairy vetch-spring maize rotation can improve nitrogen-utilization efficiency on the North China Plain
文献类型： 外文期刊
作者： Ma, Bowen 1 ; Lambers, Hans 1 ; Lakshmanan, Prakash 4 ; Huang, Wenfeng 1 ; Liang, Zhengyuan 1 ; Mudare, Shingirai 1 ; Jing, Jingying 5 ; Cong, Wen-Feng 1 ;
作者机构： 1.China Agr Univ, Natl Acad Agr Green Dev, Coll Resources & Environm Sci, Key Lab Plant Soil Interact,Minist Educ, Beijing 100193, Peoples R China
2.Wageningen Univ & Res, Farming Syst Ecol, POB 430, NL-6700 AK Wageningen, Netherlands
3.Univ Western Australia, Inst Agr, Sch Biol Sci, Perth, WA, Australia
4.Guangxi Acad Agr Sci, Sugarcane Res Inst, Key Lab Sugarcane Biotechnol & Genet Improvement G, Minist Agr & Rural Affairs, Nanning 530007, Peoples R China
5.China Agr Univ, Coll Grassland Sci & Technol, Beijing 100193, Peoples R China
关键词： Cover crop; Nitrogen-15; Nitrogen-use efficiency; Nitrogen surplus
期刊名称：PLANT AND SOIL （ 影响因子：4.9； 五年影响因子：5.2 ）
ISSN： 0032-079X
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Background and aims Understanding the contributions of winter cover crops (CCs) to nitrogen (N) uptake of succeeding spring maize will help achieve more efficient soil N use. Methods A single-factor field experiment was conducted to quantify residual N effects of contrasting cover crop tops on spring maize N utilization and environmental benefits. N-15-labeled fertilizers were applied at the time of CC establishment in a microplot experiment to determine the contribution of aboveground residue N of winter cover crops (hairy vetch (HV), February orchid (OV), hairy vetch/ February orchid mixture (HO)) to the following spring maize. Results Compared with the winter fallow, HV, OV and HO treatments decreased N fertilizer input by 30%, 9%, and 28%, respectively. The spring maize N derived from the residues was 27 (HV), 6 (OV) and 22 (HO) kg ha(-1) and the total contribution to the N uptake of spring maize from the aboveground residues was 2.2 similar to 10.3%. The fallow treatment had the highest N surplus (167 kg N ha(-1)), and HV, OV and HO treatments significantly reduced them to 78, 127 and 102 kg N ha(-1), respectively. Conclusions Introducing hairy vetch or hairy vetch/ February orchid mixture in the sole spring maize cropping system will deliver significant improvements in nitrogen use efficiency on the North China Plain.
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