한국토양비료학회지 (Korean Journal of Soil Science and Fertilizer)
- 제30권2호
- /
- Pages.114-121
- /
- 1997
- /
- 0367-6315(pISSN)
- /
- 2288-2162(eISSN)
벼 무논골뿌림재배시(栽培時) Latex 입힌 요소의 시용(施用)이 질소(窒素) 이용(利用)과 수량(收量)에 미치는 영향(影響)
Effect of Latex Coated Urea on Nitrogen Use Efficiency and Yield in Drill Seeded Rice
- Yoo, Chul-Hyun (National Honam Crop Agricultural Exp. Station, RDA) ;
- Shin, Bog-Woo (National Honam Crop Agricultural Exp. Station, RDA) ;
-
Lee, Sang-Bog
(National Honam Crop Agricultural Exp. Station, RDA) ;
- Jeong, Ji-Ho (National Honam Crop Agricultural Exp. Station, RDA) ;
- Han, Sang-Soo (National Honam Crop Agricultural Exp. Station, RDA) ;
- Kim, Seong-Jo (College of Agriculture Wonkwang University)
- 발행 : 1997.06.30
초록
본 연구(硏究)는 2년간 ('95~'96) 벼 무논골뿌림직파재배시(直播栽培時) 완효성비료(緩效性肥料) (LCU)의 시용량(施用量) 및 분시방법(分施方法)에 따른 시비질소(施肥窒素)의 토양중
Latex Coated Urea(LCU) was compared with ordinary urea under different methods of application in terms of N use efficiency and yield of rice, 1995 and 1996. The study was carried out on Jeonbug silty clay loam, in Honam Agricultural Experiment Station. The fertilizer treatments involved (1) conventional application of urea (44kg N/ha at transplanting, 33kg N/ha at five leaves stage, 33kg N/ha. (4) 55kg N/ha at transplanting and 33kg N/ha as urea at panicle initiation stage, and (5) without N. It was found that by combining LCU(as basal application) and urea(as topdressing at panicle initiation stage), at the rate of 80% of conventional rate with ordinary urea is most effective for the saving of N and increasing the use efficiency of N by rice. It was, however, observed that the efficacy of LCU was affected by the temperature during the growth of rice.