호밀녹비 이용 시 중질소(15N)를 이용한 질소원 유래별 콩의 집적질소 분획추정

• 영문명: Estimation of Soybean N Fraction Derived from N Sources by 15N in Soybean Cultivation with Rye as Green Manure
• 발행기관: 한국작물학회
• 저자명: 서종호(Jong-Ho Seo) 이성희(Seong-Hee Lee) 조영손(Young-Son Cho) 이재은(Jae-Eun Lee) 이충근(Chung-Keun Lee) 권영업(Young-Up Kwon)
• 간행물 정보: 『한국작물학회지』제53권 제1호, 50~57쪽, 전체 8쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2008.03.30

영문 초록

Winter season cultivation of rye as greenmanure for soybean have been a favorite with farmer be-cause it could remove a risk of injury by continuous crop-ping and increase N uptake and yield of soybean. Effectsof rye green manure on soybean N uptake, N₂ fixation andyield were investigated with15N as pot experiment in green-house in 2004 and field in 2005, respectively. The N derivedfrom N fertilizer (15N) in rye green manure increased withincreasing of N fertilizer rate compared to N derived frompaddy soil was higher than those at he pot with upland soilmainly due to the increase of N uptake from pady soil.Total15N recovery in soil was higher at rye green manurethan no green manure because15N applied to rye plant wasremained highly as soil organic N compared to chemicalN fertilizer.15N recovery in soybean plant increased inproportion to amounts of N fertilizer applied to rye. TheN fractions from N2 fixation of soybean plant at he potexperiment in 2004 ranged from 92% to 95%, on the otherto 84%. Estimation of amount of N₂ fixation was notdifferent between Difference method and15N method in2004 and 2005.

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키워드

soybean rye green manure 15-nitrogen N recovery N₂ fixation