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作物杂志,2022, 第1期: 116–123 doi: 10.16035/j.issn.1001-7283.2022.01.017

• 生理生化·植物营养·栽培耕作 • 上一篇    下一篇

秸秆全量还田下施用过氧化钙对南方双季稻产量和稻田温室气体排放的影响

何宇轩1(), 李雅娟1, 周明卓1, 眭锋1, 吕伟生2, 张俊3, 曾勇军1, 黄山1()   

  1. 1教育部和江西省作物生理生态与遗传育种重点实验室/江西农业大学农学院,330045,江西南昌
    2江西省红壤研究所/江西省红壤耕地保育重点实验室/农业农村部江西耕地保育科学观测实验站,331717,江西南昌
    3中国农业科学院作物科学研究所,100081,北京
  • 收稿日期:2021-01-21 修回日期:2021-04-21 出版日期:2022-02-15 发布日期:2022-02-16
  • 通讯作者: 黄山
  • 作者简介:何宇轩,研究方向为作物栽培学与耕作学,E-mail： isheyuxuan@163.com
  • 基金资助:
    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)

Effects of Calcium Peroxide Application on Yield and Greenhouse Gas Emissions under Full-Rate Straw Returning in a Double Rice-Cropping System

He Yuxuan1(), Li Yajuan1, Zhou Mingzhuo1, Sui Feng1, Lü Weisheng2, Zhang Jun3, Zeng Yongjun1, Huang Shan1()   

  1. 1Key Laboratory of Crop Physiology, Ecology and Genetic Breeding of Ministry of Education and Jiangxi/College of Agriculture, Jiangxi Agricultural University, Nanchang 330045, Jiangxi, China
    2Jiangxi 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
    3Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2021-01-21 Revised:2021-04-21 Online:2022-02-15 Published:2022-02-16
  • Contact: Huang Shan

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摘要：

为探明秸秆全量还田条件下施用过氧化钙（CaO2）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CaO2（CK）和早稻旋耕前一次性施用CaO2 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CaO2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CaO2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CaO2显著降低了早稻季CH4累积排放量、GWP和GHGI,降幅分别为14.73%、14.74%和15.09%,但是对N2O累积排放量无显著影响。施用CaO2对晚稻季CH4和N2O排放均无显著影响。与CK相比,施用CaO2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CH4和N2O累积排放量、GWP及GHGI均无显著影响。因此,施用CaO2有助于协同实现双季稻增产和稻田温室气体减排。

关键词: 双季稻, 过氧化钙, 产量, 温室气体排放

Abstract:

In order to explore the effects of applying calcium peroxide (CaO2) 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 CaO2 (CK) and a one-time application of CaO2 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 CaO2 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 CaO2 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 CaO2 significantly reduced the cumulative emission of CH4, 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 N2O. The application of CaO2 had no significant effect on CH4 and N2O emissions in late rice season. Compared with CK, the application of CaO2 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 CH4 and N2O, GWP and GHGI. Therefore, the application of CaO2 could help to achieve a synergistic increase in double-cropping rice yield and greenhouse gas emission reduction in rice fields.

Key words: Double rice, Calcium peroxide, Yield, Greenhouse gas emission

图1

稻田水层深度变化

图2

田间气温变化

表1

秸秆全量还田下施用CaO2对双季水稻产量及其构成因素的影响

年份
Year		 季别
Season		 处理
Treatment		 有效穗数
Effective panicles
(×104/hm2)		 穗粒数
Grains per
panicle		 千粒重
1000-grain
weight (g)		 结实率
Seed-setting
rate (%)		 产量
Yield
(kg/hm2)
2018 早稻 CK 301.51±8.14a 131.45±0.98a 29.52±0.27a 90.02±1.23a 7871.79±200.20a
Early rice CaO2 296.92±1.54a 139.69±5.51a 29.99±0.19a 89.53±1.07a 7892.31±256.05a
晚稻 CK 260.25±1.25b 183.68±2.30a 23.08±0.31a 86.53±1.37a 9092.04±206.64b
Late rice CaO2 265.25±1.09a 170.98±5.25a 22.57±0.39a 85.46±2.73a 9404.70±120.61a
2019 早稻 CK 299.49±1.36a 143.81±2.66a 22.61±0.21a 88.41±1.39a 7312.82±138.75a
Early rice CaO2 308.92±1.44a 136.71±1.27a 22.50±0.25a 87.66±1.29a 7384.62±146.76a
晚稻 CK 279.92±3.41b 187.38±4.76a 24.12±1.73a 85.23±0.04a 8962.50±132.29b
Late rice CaO2 286.46±6.45a 186.07±5.05a 23.78±1.12a 84.88±0.03a 9200.00±153.60a

图3

秸秆全量还田下施用CaO2对双季稻周年产量的影响 不同小写字母表示处理间差异显著（P > 0.05）,下同

图4

秸秆全量还田下施用CaO2对双季稻田CH4排放通量的影响

图5

秸秆全量还田下施用CaO2对双季稻田N2O排放通量的影响

表2

秸秆全量还田下施CaO2对双季稻田CH4和N2O累积排放量、GWP和GHGI的影响

季别
Season		 处理
Treatment		 CH4累积排放量
Cumulative emission of CH4 (kg/hm2)		 N2O累积排放量
Cumulative emission of N2O (kg/hm2)		 GWP
(kg/hm2)		 GHGI
(kg/kg)
早稻 CK 167.77±3.71a 0.17±0.09a 4194.30±92.64a 0.53±0.02a
Early rice CaO2 143.05±3.81b 0.19±0.07a 3576.19±95.36b 0.45±0.01b
晚稻 CK 268.51±45.30a 0.17±0.12a 6763.17±1156.23a 0.74±0.12a
Late rice CaO2 286.62±19.45a 0.24±0.03a 7237.08±729.98a 0.77±0.08a

表3

秸秆全量还田下施CaO2对试验周期内双季稻田CH4和N2O累积排放总量、GWP和GHGI的影响

处理
Treatment		 CH4累积排放总量
Total cumulative emission of CH4 (kg/hm2)		 N2O累积排放总量
Total cumulative emission of N2O (kg/hm2)		 GWP
(kg/hm2)		 GHGI
(kg/kg)
CK 436.28±47.53a 0.34±0.08a 11 008.19±1184.61a 0.65±0.06a
CaO2 429.66±25.65a 0.43±0.05a 10 869.26±643.08a 0.63±0.05a

图6

秸秆全量还田下施用CaO2对双季稻田土壤pH的影响

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