CAJ | 학술논문

氧化亚氮（N2 O ）的过量排放会对臭氧层造成破坏，合理施肥和采取减排措施对减缓温室效应具有重要的现实意义。本文利用FTIR光谱法研究了施肥和水分对白菜地土壤排放N2 O的影响。为了提高系统的灵敏度，我们利用多个反射镜加长了光程。通过比对施肥前后N2 O红外光谱和 NIST 谱库 N2 O红外光谱，最终选取2160～2225 cm－1作为定量计算N2 O的特征波段。研究发现，施肥和水分能促进白菜地土壤N2 O气体排放，这为农田N2 O的减排和减缓温室效应提供了理论依据。最后，还研究了施肥后土壤N2 O的昼夜排放规律，结果表明，N2 O白天的排放量高于晚上，通过和前人研究结果对比，验证了此方法的可行性。本文研究证实，基于长光程的FTIR光谱法是一种测量土壤排放N2 O气体规律的快速有效方法，它可以对施肥后的白菜地土壤N2 O气体排放进行测量，相对其他传统测量方法具有高速、简便等优势。
양화아담（N2 O ）적과량배방회대취양층조성파배，합리시비화채취감배조시대감완온실효응구유중요적현실의의。본문이용FTIR광보법연구료시비화수분대백채지토양배방N2 O적영향。위료제고계통적령민도，아문이용다개반사경가장료광정。통과비대시비전후N2 O홍외광보화 NIST 보고 N2 O홍외광보，최종선취2160～2225 cm－1작위정량계산N2 O적특정파단。연구발현，시비화수분능촉진백채지토양N2 O기체배방，저위농전N2 O적감배화감완온실효응제공료이론의거。최후，환연구료시비후토양N2 O적주야배방규률，결과표명，N2 O백천적배방량고우만상，통과화전인연구결과대비，험증료차방법적가행성。본문연구증실，기우장광정적FTIR광보법시일충측량토양배방N2 O기체규률적쾌속유효방법，타가이대시비후적백채지토양N2 O기체배방진행측량，상대기타전통측량방법구유고속、간편등우세。
The excessive emission of N2 O (Nitrous oxide) will destroy the ozone layer ,reasonable fertilization and adopting measures of emission reduction of N2 O are of great significance to slowing down the greenhouse effect .The article studied the impact of fertilization and water on the emission of N2 O from the cabbage farmland using FTIR spectrometry .To enhance the sensitivity of the measuring system ,we used multi‐reflecting mirrors to increase the optical pathlength .By comparing the infra‐red spectra between the before and after fertilizer application and the NIST spectral library ,finally ,the band at 2 160~2 225 cm -1 was chosen as the spectral characteristics band of quantitative calculation of N2 O through analyzing .The research found that fertilization and water could promote the emission of N2 O from the cabbage farmland soil ,which could supply theory bases for emission reduction of N2 O and slowing down the greenhouse effect .Finally ,we also studied the diurnal emission rules of N2 O from the fertilized soil;the results showed that the emission of N2 O was lower at night and the results were compared with that of previous’ studies ,which verifies the feasibility of this method .The results proved that FTIR with long optical path was a rapid and effective method to measure the emission rules of N2 O from the cabbage farmland soil ,which can measure the gas emissions of N2 O from the fertilized cabbage farmland soil and compared with other traditional measuring methods ,it had the ad‐vantages such as rapidness and convenience .