摘要
为探明秸秆全量还田条件下施用过氧化钙(CaO_(2))对南方双季水稻产量和稻田温室气体排放的影响,设置不施CaO_(2)(CK)和早稻旋耕前一次性施用CaO_(2)2个处理,采用静态暗箱-气相色谱法监测稻田温室气体排放,以明确秸秆全量还田下施用CaO_(2)对双季稻产量、稻田温室气体排放、综合温室效应(GWP)和温室气体排放强度(GHGI)的影响。结果表明,与CK相比,施用CaO_(2)显著增加了2018和2019年晚稻产量,增幅分别为3.44%和2.65%,但对早稻产量无显著影响。施用CaO_(2)显著降低了早稻季CH_(4)累积排放量、GWP和GHGI,降幅分别为14.73%、14.74%和15.09%,但是对N_(2)O累积排放量无显著影响。施用CaO_(2)对晚稻季CH_(4)和N_(2)O排放均无显著影响。与CK相比,施用CaO_(2)显著增加了2018和2019年的周年产量,增幅分别为1.93%和2.58%;但对CH_(4)和N_(2)O累积排放量、GWP及GHGI均无显著影响。因此,施用CaO_(2)有助于协同实现双季稻增产和稻田温室气体减排。
In order to explore the effects of applying calcium peroxide(CaO_(2))on rice yield and greenhouse gas emissions in southern double-cropping rice under the condition of returning full straw to the field,this experiment set no CaO_(2)(CK)and a one-time application of CaO_(2) before rotary tillage of early rice.In this process,static dark box-gas chromatography was used to monitor greenhouse gas emissions from rice fields to determine the effects of CaO_(2) on double-cropping rice yield,greenhouse gas emissions,comprehensive greenhouse effect(GWP)and greenhouse gas emission intensity(GHGI).The results showed that compared with CK,the application of CaO_(2)significantly increased the yield of late rice in 2018 and 2019 by 3.44%and 2.65%,respectively,but had no significant effect on the yield of early rice.The application of CaO_(2) significantly reduced the cumulative emission of CH_(4),GWP and GHGI in the early rice season by 14.73%,14.74%and 15.09%,respectively,but had no significant effect on the cumulative emission of N_(2)O.The application of CaO_(2) had no significant effect on CH_(4) and N_(2)O emissions in late rice season.Compared with CK,the application of CaO_(2) significantly increased the annual yield in 2018 and 2019 by 1.93%and 2.58%respectively;however,there was no significant effect on the annual cumulative emissions of CH_(4) and N_(2)O,GWP and GHGI.Therefore,the application of CaO_(2) could help to achieve a synergistic increase in double-cropping rice yield and greenhouse gas emission reduction in rice fields.
作者
何宇轩
李雅娟
周明卓
眭锋
吕伟生
张俊
曾勇军
黄山
He Yuxuan;Li Yajuan;Zhou Mingzhuo;Sui Feng;LüWeisheng;Zhang Jun;Zeng Yongjun;Huang Shan(Key Laboratory of Crop Physiology,Ecology and Genetic Breeding of Ministry of Education and Jiangxi/College of Agriculture,Jiangxi Agricultural University,Nanchang 330045,Jiangxi,China;Jiangxi Institute of Red Soil/Jiangxi Key Laboratory of Red Soil Arable Land Conservation/Scientific Observational and Experimental Station of Arable Land Conservation in Jiangxi,Ministry of Agriculture and Rural Affairs,Nanchang 331717,Jiangxi,China;Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China)
出处
《作物杂志》
北大核心
2022年第1期116-123,共8页
Crops
基金
国家重点研发计划项目(2016YFD0300903)
大学生创新创业训练计划项目(S202010410004)。
关键词
双季稻
过氧化钙
产量
温室气体排放
Double rice
Calcium peroxide
Yield
Greenhouse gas emission