질소 용출속도가 다른 피복요소를 혼합한 완효성비료 시용이벼 생육 및 쌀 품질에 미치는 영향

• 영문명: Effects of Application of Controlled Release Fertilizer Blended with DifferentNitrogen Releasing Latex Coated Ureas on Rice Growth and Grain Quality
• 발행기관: 한국작물학회
• 저자명: 이동욱(Dong-Wook Lee) 박기도(Ki-Do Park) 박창영(Chang-Young Park) 강위금(Ui-Gum Kang) 손일수(Il-Soo Son) 박성태(Sung-Tae Park)
• 간행물 정보: 『한국작물학회지』제52권 제3호, 311~319쪽, 전체 9쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2007.09.30

영문 초록

This study was conducted to estimate effects of application of controlled release complex fertilizer with latex coated urea (LCU-complex) on growth and grain quality of rice under direct seeded on dry paddy (DS) and transplanted on flooding paddy (TP). Three types of latex coated urea different nitrogen (N) releasing were LCU40, LCU80 and LCU100. The time of N releasing of LCU formulations in water at both 20 and 30℃ was faster in the order of LCU40, LCU80, LCU blend (LCU40, LCU80 and LCU100 was mixed in ratio of 2:2:1), and LCU100. The number of tillers and dry matter weight were great in order of LCU-complex100% > LCU-complex80% > urea and plant height was not significant. Grain yields at LCU-complex80% in both DS and TP plot were similar to those of urea application. N recovery of LCU-complex80% and 100% was improved 8 and 6% compared to that of conventional urea split application in DS plot and 9 and 4% in TP. Content of protein of grain at applied LCU-complex was less 0.8% and 0.1~0.7% than that of urea in DS and TP, respectively. Content of amylose and Mg/K ratio in rice grain was not significant. Consequently application of LCU-complex blended types of coated urea different N releasing can be reduced 20% of N without yield reduction and improved grain quality compared with urea application.

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키워드

controlled release fertilizer rice N recovery grain quality