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ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Plant Nutrition
Volume 15 - 2024 |
doi: 10.3389/fpls.2024.1446277
This article is part of the Research Topic Application and Mechanism of Plant Biostimulants, Biochar, Fertilizer Products, and Other Nutrition-related Agrochemicals View all 17 articles
Organic waste recycling application increases N availability and mitigates N2O emission without crop yield penalty in the North China Plain
Provisionally accepted- 1 China Agricultural University, Beijing, China
- 2 Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang Province, China
- 3 Shandong Academy of Agricultural Sciences, Jinan, Shandong Province, China
- 4 Chinese Academy of Agricultural Engineering, Beijing, Beijing Municipality, China
Agricultural organic waste recycling can supply nutrients for crop production and partially replace chemical nitrogen fertilizers, which is beneficial for waste management and environmental protection. Nevertheless, comprehensive evaluation for the effects of different organic materials application on crop yield and environment are limited. Therefore, in this study, a comprehensive investigation on the synergistic effects of straw, pig manure, and biogas residue recycling on the wheat (Triticum aestivum L.) and maize (Zea mays L.) systems was carried out in the North China Plain.Field experiments were conducted from 2019 to 2021, comprising five treatments: straw (ST), pig manure (PM), and biogas residue (BR) partially replacing chemical nitrogen fertilizer, sole application of chemical nitrogen fertilizer (CF), and a control with no nitrogen application (WN).The results showed that organic materials significantly increased soil total nitrogen (3.04%-9.10%) and N recovery efficiency (REN, 42.21%-44.99%), but pig manure was more beneficial to increase crop yields (3.50%), especially wheat yields (8.72%), and REN was significantly higher than that of the other treatments. Organic materials performed differently in wheat and maize seasons, and wheat yield could be improved by organic materials return. Organic materials stimulated N2O emission in wheat season (4.28%-32.20%), while biogas residue inhibited the N2O emission in maize season (47.47%). The negative effect of straw and biogas residue on yield decreased with increasing years of return, and pig manure continued to contribute to yield. In conclusion, pig manure is the optimal alternative that can increase crop yield, soil N content and REN without stimulating N2O emissions.
Keywords: straw, pig manure, Biogas residue, Nitrogen utilization, N2O emission
Received: 09 Jun 2024; Accepted: 26 Aug 2024.
Copyright: © 2024 Chen, Du, Liu, Gao, Cui and Chen. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Lin Chen, China Agricultural University, Beijing, China
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