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서남부 간척지에서 토양염농도별 벼 담수표면직파 파종전·후 물관리방법
Optimum Water Management Practices for Direct Seeding on Paddy Surface of Saline in Soils in Reclaimed Tidelands
백남현 ( Nam-hyun Back ) , 고종철 ( Jong-cheol Ko ) , 남정권 ( Jeong-kwon Nam ) , 김보경 ( Bo-kyeong Kim ) , 박홍규 ( Hong-kyu Park ) , 김상수 ( Sang-su Kim ) , 김정곤 ( Chung-kon Kim )
UCI I410-151-25-02-091953471
이 자료는 4페이지 이하의 자료입니다.

This study was conducted to suggest proper water management practices after and before broadcasting of rice seed on flooded paddy surface at reclaimed saline soil with two different saline levels in Gyehwado Substation of Honam Agricultural Research Institute (HARI) NICS, RDA for two years from 2004 to 2005. The stable seedling stand in low saline soil of 0.1% salinity was obtained by one time of water exchange after soil rotary. Whereas in medium saline soil of 0.3% salinity, three times of water exchange was required for the stable seedling stand. Milled rice yield was not affected by frequency of water exchange in low saline soil, while it decreased sharply in one and two times of water exchange compared with three times of water exchange in medium saline soil. Irrigation water immediately after direct seeding increased the number of seeding stand in low saline soil. With the increase in the interval of water exchange after direct seeding, the milled rice yield decreased. Although the continuous water flowing showed the most number of seedling stand and was increased milled rice yield compared with the others interval of water exchange in medium saline soil, the number of seedling stand and milled rice wasn’t significantly different up to exchange of two days interval compared with the continuous water flowing.

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