초록

1. 신간척지에서 토양 염농도별 동계 및 하계 사료작물의 생육반응 및 수량성 구명
2. 신간척지에서 생산성 향상을 위한 동계, 하계 사료작물의 적정 질소시비량 구명
3. 신간척지에서 사료작물을 생산하면서 지력증진을 위한 가축분퇴비의 적정 시용량 구명

Abstract ▼

Cultivation of forage crops in reclaimed land is encouraged in order to boost self sufficiency of forage. This study was conducted to investigate proper seeding denstiy and nirogen fertilizaion of main forage crops planted in the new reclaimed land with various soil salinity levels. When salinity in

Cultivation of forage crops in reclaimed land is encouraged in order to boost self sufficiency of forage. This study was conducted to investigate proper seeding denstiy and nirogen fertilizaion of main forage crops planted in the new reclaimed land with various soil salinity levels. When salinity increased, seedling stands of winter forage crops such as silage barley, rye, triticale, and oat became decreased and irregular. Plant height and the number of tillers were significantly reduced as well. Compared with regular soil, dry matter yield in saline soil was reduced to 66-75 %, 49-55 %, and 32-28 % levels in 0.2 %, 0.3 %, and 0.4 % salinity, respectively. Growth of summer forage crops such as maize and sorghum×Sudan grass was also poor with considerably low yield under > 0.3 % salinity level. Therefore, it is recommended to cultivate winter and summer forage crops under < 0.2 % salinity condition. Proper seeding amount under 0.2 % salinity soil was 30 kg/10a and for silage barely. Proper nitrogen fertilizati on under 0.2 % salinity soil was 25 kg/10a for silage barley and 30 kg/10a for sorghum×Sudan grass. When cultivating silage barley and sorghum × Sudan grass in the new reclaimed land, proper manure application was 150-200 % of standard nitrogen fertilization.

목차 Contents

• 표지 ... 1
• 제출문 ... 2
• 요약문 ... 3
• SUMMARY ... 4
• 제 1 장 서 론 ... 5
• 제 2 장 국내.외 기술개발 현황 ... 6
• 제1절 국외 연구현황 ... 6
• 제2절 국내 연구현황 ... 6
• 제 3 장 연구개발 수행 내용 및 결과 ... 7
• 제1절 재료 및 방법 ... 7
• 제2절 연구결과 ... 8
• 제 4 장 연구개발목표 달성도 및 대외기여도 ... 19
• 제1절 목표대비 달성도 ... 19
• 제2절 정량적 성과 ... 19
• 제 5 장 연구개발결과의 활용계획 ... 20
• 제 6 장 기타 중요 변동사항 ... 20
• 제 7 장 참고문헌 ... 21