초록

본 과제는 무경운용 로터리날을 개발하여 지금까지와 다른 방식으로 벼 무경운재배를 하여 기존의 이앙재배 대비 수량과 품질을 보전할 수 있도록 하였음. 또한 무경운 재배기간 동안 토양특성변화, 온실가스 배출량 및 병해충ㆍ잡초의 발생특성을 구명하였음.

(출처 : 보고서 요약서 4p)

Abstract ▼

Purpose&Contents
○ Establishment of no-till technology system for low-carbon crops to cope with climate change
- Soil assessment using soil quality index and productivity index
- Soil chemical analysis, microbial change analysis
- Analysis of the growth characteristics of rice according

Purpose&Contents
○ Establishment of no-till technology system for low-carbon crops to cope with climate change
- Soil assessment using soil quality index and productivity index
- Soil chemical analysis, microbial change analysis
- Analysis of the growth characteristics of rice according to tillage methods and development of no-till farming technology
- To evaluate the public interest effect and economic efficiency of greenhouse gas reduction by no-till practice of food crops.

Results
○ Soil carbon was higher in NT-S and MT-S, compared to T-T and T-WS. In NT-S and MT-S, soil carbon contents were the highest in the top soil (5 cm depth) and they decreased with soil depth. In T-T and T-WS, however soil carbon contents showed no significant difference up to soil depth of 15 cm from the top. Carbon content was the highest in the soil particle size under 106 μm and it decreased as the soil particle size increased.
○ Contents of water-stable aggregates in no-till and MT-S were higher than T-T and T-WS. In NT-S and MT-S, contents of water-stable aggregates were the highest in the top soil and significantly decreased with soil depth while, in T-T and T-WS, they were not significantly different up to the soil depth of 15 cm.
○ The amount of methane emission was highest in T-T treatment. In MT-D and NT-D, methane emission was significantly decreased by 77% compared with T-T. Conversely, the contents of total soil carbon (TSC) was higher in MT-D and NT-D plots than tillage plots.
○ Development and assessment of no-tillage seeder
○ Analysis of growth and yields characteristics of rice according to tillage methods
○ Assessment of the effectiveness of green manure crops for fertilizer replacement in no-tillage paddy

○ Major achievements are as follows. First, economic effects of no - tillage cultivation considering greenhouse gas reduction effect were suggested. Second, the preference order of the cultivation technology according to the risk attitude and cost reduction level was suggested. Thirdly, the importance order affecting farmers’ choice for cultivation technology was suggested

Expected Contribution
○ Establishment of technology system to supply no-till cultivation method
○ The characteristics of pests and weeds according to the tillage methods can be suggested to provide information for pest control, weed management and cultivation management for the establishment of precise direct cultivation method.

○ The farmers' level of cost saving ability and risk preference will be importantly considered for the adoption of new technology in rice farming. In addition, the factors affecting farmers' choice of cultivation technology will contribute to the direction of research development and technology dissemination of new practices in rice farming.

(출처 : Summary 6p)

목차 Contents

• 표지 ... 1
• 제출문 ... 2
• 보고서 요약서 ... 4
• 국 문 요 약 문 ... 5
• Summary ... 6
• 목차 ... 8
• 제 1 장 연구 개발 과제의 개요 ... 9
• 제 2 장 국내외 기술개발 현황 ... 12
• 제 3 장 연구 수행 내용 및 결과 ... 14
• 벼 무경운 직파재배시 토양특성 변화 구명 ... 14
• 벼 경운방법별 직파재배기술 확립 ... 24
• 벼 무경운 직파재배시 탄소축적 및 온실가스 저감효과 구명 ... 50
• 벼 무경운 직파재배시 병해충 발생 및 잡초발생 특성 구명 ... 56
• 밭토양 식량작물 무경운 작물재배법 개발 ... 73
• 밭토양 무경운 재배시 탄소축적 및 온실가스 저감효과 구명 ... 104
• 무경운 재배의 공익적 효과 및 경제성 평가 ... 135
• 제 4 장 목표달성도 및 관련분야 기여도 ... 186
• 제 5 장 연구 결과의 활용 계획 ... 188
• 제 6 장 연구 과정에서 수집한 해외 과학 기술 정보 ... 189
• 제 7 장 연구 개발 결과의 보안 등급 ... 191
• 제 8 장 국가과학기술지식정보서비스에 등록한 연구시설·장비 현황 ... 191
• 제 9 장 연구개발과제 수행에 따른 연구실 등의 안전조치 이행실적 ... 191
• 제 10 장 연구개발과제의 대표적 연구실적 ... 192
• 제 11 장 기타사항 ... 193
• 제 12 장 참고문헌 ... 194
• 끝페이지 ... 208