녹비보리의 환원시기가 후작물 벼 생육 및 수량에 미치는 영향

• 영문명: Effect of Barley Green Manure on Rice Growth and Yield According to Tillage Date in Spring
• 발행기관: 한국작물학회
• 저자명: 김민태(Min-Tae Kim) 구자환(Ja-Hwan Ku) 전원태(Weon-Tai Jeon) 성기영(Ki-Yeong Seong) 박창영(Chang-Young Park) 유진희(Jin-Hee Ryu) 조현숙(Hyeoun-Suk Cho) 오인석(In-Seok Oh) 이용환(Yong-Hwan Lee) 이종기(Jong-Ki Lee) 박만(Man Park) 강위금(Ui-Gum Kang)
• 간행물 정보: 『한국작물학회지』제56권 제2호, 119~123쪽, 전체 5쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2011.06.30

영문 초록

To use barley as a green manure crop, this study has been conducted in Suwon, Gyeonggi-do to establish the barley green manure (BGM)-rice cropping system with emphasis on soil incorporation date and BGM density. The nitrogen (N) contents of rye and barley, grass green manure crops, were 1.4~2.4% at early growth stage and decreased rapidly to 0.6~1.0% at late growth stage. The biomass of barley was 449 kg/10a at heading stage (HS) and increased to 421 kg/10a at 10 days after heading stage (DAH), 473 kg/10a at 20 DAH. C/N ratio of BGM was the lowest 26.3 at HS. The N contents of BGM was in the range of 0.9~1.5%, the highest at HS and gradually decreased, and the output of N were 4.3~6.3 kg/10a. The total amount of nitrogen, phosphorous and potassium of BGM showed the highest level at 10 DAH. Culm length of rice was relatively longer as the BGM application time was delayed. The application of BGM into soil increased plant height of rice by 7.2~7.7 cm as compared to the plants treated with commercial fertilizer at recommended rate. but panicle length of rice showed a similar tendency in both the soil-applied of BGM and commercial fertilizer. N contents of unhulled rice was the highest at HS of BGM and followed by 10 DAH of BGM and 20 DAH of BGM. This trend could also be seen in rice straw. The yield of rice in the soil-applied of BGM was 10~15% lower than in the soil-applied of commercial fertilizer. Based on this study, application of BGM made it possible to save 30~50% of application amount of nitrogen fertilizer for following crops.

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결과 및 고찰

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키워드

barley green manure rice growth yield C/N ratio nitrogen