한국잡초학회지 (Korean Journal of Weed Science)
- 제16권3호
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- Pages.181-186
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- 1996
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- 0253-7648(pISSN)
벼 건답직파재배시(乾畓直播栽培時) 조기담수(早期湛水)에 따른 벼 생육(生育) 및 잡초발생(雜草發生) 영향(影響)
Effects of Early Flooding in Dry Seeded Rice on Rice Growth and Weed Occurrence
- Park, Sung-Tae (National Yeongnam Agricultural Experiment Station, RDA.) ;
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Hwang, Chung-Dong
(National Yeongnam Agricultural Experiment Station, RDA.) ;
- Hwang, Dong-Yong (National Yeongnam Agricultural Experiment Station, RDA.) ;
- Son, Yang (National Yeongnam Agricultural Experiment Station, RDA.) ;
- Kim, Soon-Chul (National Yeongnam Agricultural Experiment Station, RDA.) ;
- Oh, Yun-Jin (National Yeongnam Agricultural Experiment Station, RDA.)
- 투고 : 1996.04.16
- 발행 : 1996.09.30
초록
벼 건답직파재배시(乾畓直播栽培時) 상시담수시기(常時湛水時期)에 따른 벼 생육영향(生育影響) 및 잡초발생(雜草發生) 차이(差異)를 구명(究明)하고자 화남(花南)벼를 5월(月) 6일(日)에 건답휴립(乾畓畦立)줄뿌림하여 담수시기(湛水時期) (출아직전(出芽直前), 출아기(出芽期), 2, 3, 4, 5엽기(葉期))를 달리할 때 벼 입모(立毛),도복관련형질(倒伏關聯形質) 및 수량성(收量性)과 잡초발생(雜草發生) 차이(差異)를 조사한 결과(結果)는 다음과 같다. 1. 출아일수(出芽日數)는 21-24일(日), 입모수(立毛數)는 89-101개(個)/
This experiment was conducted at National Yeongnam Agricultural Experiment Station in 1995 to identify effects of early flooding in dry seeded rice on rice growth and weed occurrence. The early flooding of emergence date and the 2-leaf stage were not differed significantly on seedling stand, seedling growth of rice and plant characteristics associated with lodging compared to flooding of the 4-leaf stage. However, weed occurrence resulted in 39-61% suppression. Most predominant weed regardless of flooding times was Echinochloa crus-galli, followed by Aneilema japonicum. The Aneilema japonicum, in general, was higher occurrence with earlier flooding, while dry land weeds such as Digitaria sanguinalis, Stellaria alsine etc. reduced. Grain yield of early flooding at emergence date and the 2-leaf stage was higher by 2-5% than that of the 4-leaf stage due to better grain filling ratio and heavier 1,000 grain weight.