30년 콩-옥수수 윤작 및 경운처리 장기시험 포장의 토양 온실가스 발생

• Published in: Korean journal of crop science Vol. 57; no. 1; pp. 89 - 97
• Main Authors: 서종호, Jong-ho Seo, Tony J. Vyn, Anita Gal, Doug R. Smith
• Format: Journal Article
• Language: Korean
• Published: 한국작물학회 31.03.2012
• Subjects: com; GHG; greenhouse gas; nitrogen fertilizer; rotation; soybean; tillage; 농학; soybean; greenhouse gas (GHG); nitrogen fertilizer; corn; tillage; rotation
• ISSN: 0252-9777; 2287-8432

Reduction of greenhouse gas (GHG) emissions from upland crop field as well as paddy field is being required, but little information on GHG emissions according to cultivation practices in upland field is available. Soil GHG emissions during the growing season were investigated in the field of three decades rotation and tillage treatments which were consisted of plow, chiesl tillage and no tillage in west central Indiana, USA in 2006. Seasonal cumulative CO 2 emissions were not different among treatments. CH 4 emission increased a little in plow tillage during early soybean growing season. Most of N 2 O emission occurred during early com growing season after N-fertilizer application from mid June to mid July, and was significantly affected by tillage practices in which seasonal cumulative N 2 O emission was significantly higher under chisel tillage. N 2 O emission under no-tillage was lower about 64% and 39% than that under chisel tillage and plow tillage, respectively. No-tillage practice with rotation of corn and soybean seems to be promising in point of less GHG emission and less labor for cultivation without grain yield reduction.