硝化抑制剂双氰胺施用对水稻产量和温室气体排放的影响
收稿日期: 2023-07-09
网络出版日期: 2024-01-23
基金资助
中国博士后科学基金面上项目(2022M722702);扬州大学高层次人才启动基金(137012328);江苏高校优势学科建设工程资助项目(PAPD)
Effects of Nitrification Inhibitor Dicyandiamide Application on Rice Yield and Greenhouse Gas Emissions
Received date: 2023-07-09
Online published: 2024-01-23
为探究施用硝化抑制剂双氰胺对水稻产量和温室气体排放的影响，以常规粳稻品种南粳9108为供试材料进行盆栽试验，设置常规氮肥（CK）和常规氮肥配施硝化抑制剂双氰胺（DCD）2个处理。采用静态箱-气相色谱法连续监测稻田温室气体排放动态变化。结果表明，与CK相比，DCD显著提高了水稻产量（15.1%）和地上部生物量（28.4%），并且显著降低了稻田甲烷（CH4）累积排放量（22.2%）、氧化亚氮（N2O）累积排放量（56.0%）、综合温室效应（GWP）（24.4%）和温室气体排放强度（GHGI）（31.7%）。可见，常规氮肥配施硝化抑制剂双氰胺可以协同实现水稻丰产和稻田温室气体减排。
陈云, 孟轶, 翁文安, 陈雨琼, 张洪程, 廖萍 . 硝化抑制剂双氰胺施用对水稻产量和温室气体排放的影响[J]. 中国稻米, 2024 , 30(1) : 26 -29 . DOI: 10.3969/j.issn.1006-8082.2024.01.004
A pot experiment was conducted to investigate the effects of applying nitrification inhibitor dicyandiamide on rice yield and greenhouse gas emissions with the conventional japonica rice variety Nanjing 9108 as the test material. Two treatments: conventional nitrogen fertilizer (CK) and conventional nitrogen fertilizer combined with dicyandiamide (DCD) were set up. The results showed that compared to CK, DCD treatment significantly increased rice yield (15.1%) and aboveground biomass (28.4%), but reduced methane (CH4) emissions (22.2%), nitrous oxide (N2O) emissions(56.0%), area-scaled global warming potential (GWP)(24.4%), and yield-scaled GWP(GHGI)(31.7%). It can be seen that DCD can increase grain yield and mitigate greenhouse gas emissions simultaneously in rice field.
Key words： nitrification inhibitor; dicyandiamide; rice; yield; methane; nitrous oxide; paddy field
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