KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)
- Volume 41 Issue 5
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- Pages.505-513
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- 1996
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- 0252-9777(pISSN)
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- 2287-8432(eISSN)
Changes in Chemical Components of Stagnant Water, Germination Rate and Seedling Elongation of Rice Varieties under Different Amount of Barley Straw Mulching
보리짚 피복량에 따른 논물의 화학성분 변화와 벼 발아율 및 유묘신장의 품종간 차이
- Cheong, Jin-Il (National Honam Agricultural Experiment Station, RDA) ;
- Kim, Bo-Kyeong (National Honam Agricultural Experiment Station, RDA) ;
- Ha, Ki-Yong (National Honam Agricultural Experiment Station, RDA) ;
- Lee, Jae-Kil (National Honam Agricultural Experiment Station, RDA) ;
- Shin, Hyun-Tak (National Honam Agricultural Experiment Station, RDA)
- Published : 1996.10.01
Abstract
This study was conducted to investigate the variation of chemical components in stagnant water under different mulching amount of barley straw after combine harvesting and the effect of stagnent water on the germinatidn and seedling elongation at early growth stage in rice. pH was lower in barley straw mulching than non-mulching and decreased with increasing of mulched barley straw but was not different among treatments in stagnant water at 15 days after flooding. Dissolved oxygen decreased with the increasing of mulched barley straw and increased with the passing of time, while saline content increased with the increasing of mulched barley straw, showing significant difference among treatments, was peaked at 15 days after flooding and thereafter, decreased. NH4-N was higher 5 days after flooding with thicker barley straw mulching but was not different at 10 days. N
보리 입모중 벼 직파재배에 있어서 콤바인 수확에 따른 보리짚 피복량의 불균일에 의한 표면수의 화학성분 변화와 그 표면수가 벼 품종의 발아율 및 초기 유묘신장에 미치는 영향을 검토하였던 바, 그 결과를 요약하면 다음과 같다. 1. pH는 보리짚 무피복에 비하여 피복구가 낮았으며, 피복량이 많을수록 낮았으나 15일 이후에는 처리간 차이가 없었다. 2. 용존산소는 무피복에 비하여 피복량이 많을수록 낮았으나, 시일이 경과할수록 증가경향을 보였으나, EC는 용존산소와는 반대로 피복량이 많을수록 높았으며, 처리간 차이가 컸고 15 일에 가장 높았으며, 이후 감소하는 경향을 보였다. 3. N
Keywords
- Direct sowing;
- Barley straw mulching;
- No-tillage culture;
- Stagnant water;
- Chemical components;
- Germination rate;
- Seedling elongation