湖北省不同花生轮作种植体系碳氮足迹

doi:10.13287/j.1001-9332.202111.025

摘要/Abstract

摘要： 明确作物生产过程的主要碳氮排放环节,可为不同花生轮作种植体系实现高产高效与低碳氮排放的协同效益提供有效参考。本研究对湖北省黄冈市油菜-花生轮作、小麦-花生轮作、花生单作3种种植模式生产过程的农资投入和田间管理措施等进行实地调查,核算该3种种植模式的碳足迹和氮足迹。结果表明: 油菜-花生轮作较小麦-花生轮作单位面积碳排放降低7.8%、单位净现值碳排放降低36.9%、单位面积氮排放降低12.5%、单位净现值氮排放降低41.9%;油菜-花生轮作较花生单作单位净现值碳排放和氮排放分别降低19.6%和30.8%;油菜-花生轮作净收益是小麦-花生轮作的1.4倍、花生单作的2.4倍。表明油菜-花生轮作可实现高产高效与低碳氮排放的协同效益,有利于油料作物的绿色高质高效生产。

关键词: 油菜-花生轮作, 小麦-花生轮作, 花生单作, 碳足迹, 氮足迹

Abstract: Clarifying carbon and nitrogen emissions of different peanut rotation planting system can provide an effective reference to achieve high yield, high efficiency, and low carbon and nitrogen emissions. Based on field surveys on agricultural inputs and field managements, we calculated the carbon footprint and nitrogen footprint of three planting modes (rape-peanut rotation, wheat-peanut rotation and peanut monoculture) in Huanggang, Hubei Province. The results showed that compared with wheat-peanut rotation, carbon emission per unit area of rape-peanut rotation decreased by 7.8%, carbon emission per unit net present value decreased by 36.9%, the nitrogen emission per unit area decreased by 12.5%, and nitrogen emission per unit net present value decreased by 41.9%. Compared with peanut monoculture, rape-peanut rotation reduced carbon and nitrogen emissions by 19.6% and 30.8%, respectively. The net income of rape-peanut rotation was 1.4 times as that of wheat-peanut rotation and 2.4 times as that of peanut monoculture. It is suggested that rape-peanut rotation could achieve the synergistic benefits of high yield and efficiency and low carbon and nitrogen emissions, which is conducive to the green, high quality, and high efficiency production of oil crops.

Key words: rape-peanut rotation, wheat-peanut rotation, peanut monoculture, carbon footprint, nitrogen footprint.

庞茹月,王明辉,孔洁,李宁,王铭伦,邹晓霞. 湖北省不同花生轮作种植体系碳氮足迹[J]. 应用生态学报, 2021, 32(11): 3997-4003.

PANG Ru-yue, WANG Ming-hui, KONG Jie, LI Ning, WANG Ming-lun, ZOU Xiao-xia. Carbon and nitrogen footprint of different peanut rotation systems in Hubei Province, China[J]. Chinese Journal of Applied Ecology, 2021, 32(11): 3997-4003.

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