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花生季减氮对花生—小麦两熟制农田碳足迹和碳汇生态服务价值的影响

来源：花匠小妙招时间：2024-11-12 20:36

摘要：

华北平原作为我国的粮食主产地,最小化碳足迹、最大化碳固存和生态系统服务价值是该区农业发展的重要方向。研究于2021-2022年探究了花生季的3个氮肥水平(90kg·hm-2、126kg·hm-2和180kg·hm-2)对花生-小麦两熟制农田碳足迹和碳汇服务价值的影响，旨在确定低碳足迹、高碳汇服务价值、高产量和经济价值的最佳花生季氮肥投入量。结果表明：农田土壤温室气体排放量、有机碳储量和农资温室气体排放量随施氮量的增加而升高，化肥是引起花生-小麦两熟制模式碳排放的主要因素。90kg·hm-2和126kg·hm-2施氮量处理下花生的产量显著高于180kg·hm-2处理25.17%和18.35%。花生农田碳足迹范围为-0.22~0.13kg·kg-1，小麦农田碳足迹范围为0.20~0.49kg·kg-1。由于有机碳储量和作物产量的影响,两熟制农田碳足迹在处理间差异不显著。花生季施氮量对花生-小麦两熟制农田的碳汇服务价值无显著影响。因此，在本系统边界内90kg·hm-2的花生季施氮量为实现花生-小麦两熟制高产、减少碳排放、提高经济效益和碳汇价值的最佳氮肥施用量。

As the main grain producing area in China,minimizing carbon footprintand maximizing carbon sequestration and ecosystem service value are importantdirections foragriculturaldevelopmentin the North China Plain.In this study, the effects ofthree nitrogen fertilizerlevels(90kg · hm- 2 , 126kg · hm- 2 and 180 kg · hm-2 )in the peanut season on the carbon footprintand carbon sink service value ofpeanut-wheatdouble cropland were investigated from 2021 to 2022, with the aim of determining the optimalpeanutseason nitrogen fertilizer inputfor low carbon footprint, high carbon sink service value, high yield and economic value. The results showed thatgreenhouse gas emission from farm soil, organic carbon sequestration and greenhouse gas emission from agricultural sources increased with increasing nitrogen application, and that chemical fertilizer was the main factor causing carbon emission from peanut-wheat double system. The yield of peanut under 90 kg · hm- 2 and 126kg · hm- 2 nitrogen application treatments was significantly higher than the 180 kg · hm- 2 treatment by 25. 17%and 18. 35%. Thecarbon footprintofpeanutfarmland ranged from -0. 22to0. 13kg · kg- 1 and thatofwheatfarmland ranged from0. 20 to 0. 49kg · kg- 1 . There was no significantdifference between treatments in the carbon footprintof the double cropland due to the organic carbon sequestration and crop yield. There was no significanteffectofpeanutseason nitrogen application on the carbon sink service value of peanut-wheat double cropping farmland. Therefore, within the boundary of this system , the peanutseason nitrogen application rate of90 kg · hm- 2is the optimalone forachieving high yield, reducing carbon emission, and increasing economic efficiency and carbon sink value in the peanut-wheatdouble system.

作者：

耿润莲，张志勇，晁晓燕，郝永会，贺云霞，李春喜

Geng Runlian，Zhang Zhiyong，Chao Xiaoyan，Hao Yonghui，He Yunxia，LiChunxi

机构地区：

河南师范大学生命科学学院；河南科技学院生命科学学院

引用本文：

耿润莲,张志勇,晁晓燕等.花生季减氮对花生-小麦两熟制农田碳足迹和碳汇生态服务价值的影响[J]. 河南师范大学学报(自然科学版) , 2024, 52(6) : 10-19.

(Geng Runlian, Zhang Zhiyong, Chao Xiaoyan, et al.Effects of nitrogen reduction in peanutfield on carbon footprint and ecosystem service of carbon sequestration of peanut- wheatdouble cropping farmland[J] . Journal of Henan Normal University( Natural Science Edition) , 2024, 52(6) :10-19. DOI:10. 16366/j. cnki.1000-2367. 2023. 02. 17. 0002. )

基金：

国家重点研发计划；中原科技创新领军人才项目

关键词：

花生-小麦两熟制；减施氮肥；温室气体；碳足迹；碳汇服务价值

peanut-wheatdouble system; nitrogen reduction; greenhouse gas; carbon footprint; carbon sink servicevalue

分类号：

Q948. 112

花生季减氮对花生—小麦两熟制农田碳足迹和碳汇生态服务价值的影响.pdf