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

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

扫码查看
原文链接
  • NSTL
  • Elsevier
? 2022 Elsevier B.V.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.

Carbon emissionCarbon inputMaize straw productionSoil carbon sequestrationStraw return

Ming B.、Wang K.、Xue J.、Li S.、Hou P.、Liu Y.、Yang Y.、Guo X.、Wang Y.、Zhao R.、Zhang W.、Bian S.、Ren H.、Zhao X.、Liu P.、Chang J.、Zhang G.、Liu J.、Yuan L.、Zhao H.、Shi L.、Zhang L.、Yu L.、Gao J.、Yu X.、Wang Z.、Shen L.、Ji P.、Yang S.、Zhang Z.、Ma X.、Wang X.、Lu T.、Dong B.、Li G.、Ma B.、Li J.、Deng X.、Yang Q.、Jia C.、Chen X.、Fu H.、Liu W.、Liu G.、Xie R.

展开 >

Institute of Crop Sciences/Key Laboratory of Crop Physiology and Ecology Chinese Academy of Agricultural Sciences Ministry of Agriculture and Rural Affairs

College of Agronomy Northwest A&F University

Institute of Crop Sciences Sichuan Academy of Agricultural Sciences

The Key Laboratory of Oasis Eco-agriculture Xinjiang Production and Construction Group College of Agronomy Shihezi University

Institute of Agricultural Resources and Environment Jilin Academy of Agricultural Sciences

Institute of Crop Sciences Ningxia Academy of Agriculture Sciences

Guizhou Academy of Agriculture Sciences

College of Agronomy Shandong Agriculture University

Institute of Henan Xunxian Agriculture Sciences

Luohe Academy of Agriculture Sciences

Institute of Maize Liaoning Academy of Agriculture Sciences

Dandong Academy of Agriculture Sciences

Institute of Crops Heilongjiang Academy of Land Reclamation and Agriculture Sciences

Inner Mongolia Agriculture University

Jilin Academy of Agriculture Sciences

Agriculture Technical Extension Centre of Zunhua

Institute of Maize Shanxi Academy of Agricultural Sciences

Yulin Agricultural Technology Work Station

Mianyang Academy of Agriculture Sciences

Tonghua Academy of Agricultural Sciences

Nenjiang Institute of Agricultural Sciences

Agriculture Technical Extension Centre of Tongliao

Laizhou Jinhai Seed Industry Co. Ltd

Shandong Denghai Seed Industry Co. Ltd

Suzhou Academy of A&F Sciences

展开 >

2022

10.1016/j.agee.2022.107865

Agriculture, Ecosystems & Environment

Agriculture, Ecosystems & Environment

ISSN：0167-8809
年,卷(期)：2022.328
  • 15
  • 62