Estimation of maize straw production and appropriate straw return rate in China

文献类型： 外文期刊

第一作者： Liu, Wanmao

作者： Liu, Wanmao;Liu, Guangzhou;Xie, Ruizhi;Ming, Bo;Wang, Keru;Xue, Jun;Li, Shaokun;Hou, Peng;Liu, Wanmao;Liu, Yuee;Yang, Yunshan;Guo, Xiaoxia;Wang, Yonghong;Zhao, Rulang;Zhang, Wenjie;Wang, Yongjun;Bian, Shaofeng;Ren, Hong;Zhao, Xiaoyan;Liu, Peng;Chang, Jianzhi;Zhang, Guohe;Liu, Jiayou;Yuan, Liuzheng;Zhao, Haiyan;Shi, Lei;Zhang, Lili;Yu, Lin;Gao, Julin;Yu, Xiaofang;Wang, Zhigang;Shen, Liguo;Ji, Ping;Yang, Shuzong;Zhang, Zhongdong;Xue, Jiquan;Wang, Xiuquan;Wang, Xiuquan;Lu, Tingqi;Dong, Benchun;Li, Gang;Ma, Baoxin;Li, Jinqin;Deng, Xiufeng;Liu, Yonghong;Yang, Qin;Jia, Chunlan;Chen, Xianping;Fu, Hua

作者机构：

关键词： Maize straw production; Straw return; Carbon input; Carbon emission; Soil carbon sequestration

期刊名称：AGRICULTURE ECOSYSTEMS & ENVIRONMENT （ 影响因子：6.576； 五年影响因子：7.088 ）

ISSN： 0167-8809

年卷期： 2022 年 328 卷

页码：

收录情况： SCI

摘要： Accurate estimation of maize (Zea mays L.) straw production and exploration of appropriate straw return rate have important reference for guiding the comprehensive utilization of crop straw. In this study, we estimated the maize straw production (including aboveground straw and root straw) in recent ten years (2009-2018) of the four largest maize growing regions across China using the latest obtained region-specific maize straw index and root-shoot ratio and then determined the appropriate straw return rate of different regions based on the carbon (C) balance between straw C input and the total C emissions generated in maize cultivation. Our results showed that there were significant differences in maize straw index (MSI) and root-shoot ratio between different maize growing regions in China with spatial distribution trends of Huanghuaihai (HM) > North (NM) > Southwest (SW) > Northwest (NW) maize regions and SW > NW > NM > HM, respectively. On average, in the recent ten years, the total maize straw production of the four major regions was 216.03 Mt yr(-1), including 192.73 Mt yr(-1) for the aboveground straw production and 23.30 Mt yr(-1) for root straw production. Nationally, when the maize straw return rate was 70.4% (45.8%, 57.4%, 62.2% and 84.5% in SW, HM, NW and NM respectively), the straw C input into soil can theoretically counterbalance the total C emission generated in maize cultivation. Additionally, the total soil organic C sequestration increased from 11.26 to 18.88 Mt C yr(-1) for the whole four regions under the scenarios of 0%, 25%, 50%, 75% and 100% maize straw return.

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[1]Estimation of maize straw production and appropriate straw return rate in China. Liu, Wanmao,Liu, Guangzhou,Xie, Ruizhi,Ming, Bo,Wang, Keru,Xue, Jun,Li, Shaokun,Hou, Peng,Liu, Wanmao,Liu, Yuee,Yang, Yunshan,Guo, Xiaoxia,Wang, Yonghong,Zhao, Rulang,Zhang, Wenjie,Wang, Yongjun,Bian, Shaofeng,Ren, Hong,Zhao, Xiaoyan,Liu, Peng,Chang, Jianzhi,Zhang, Guohe,Liu, Jiayou,Yuan, Liuzheng,Zhao, Haiyan,Shi, Lei,Zhang, Lili,Yu, Lin,Gao, Julin,Yu, Xiaofang,Wang, Zhigang,Shen, Liguo,Ji, Ping,Yang, Shuzong,Zhang, Zhongdong,Xue, Jiquan,Wang, Xiuquan,Wang, Xiuquan,Lu, Tingqi,Dong, Benchun,Li, Gang,Ma, Baoxin,Li, Jinqin,Deng, Xiufeng,Liu, Yonghong,Yang, Qin,Jia, Chunlan,Chen, Xianping,Fu, Hua. 2022

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