Our research work aimed to evaluate cover crop effects of winter rye on soil characteristics, soil conservation, and yield productivities on potato fields with 15% slope during a fallowed period. There were two controls of bared field without any cultivation and conventional potato cultivation without winter rye. Potato cultivation increased soil pH, organic matter, available phosphate, and exchangeable cation regardless of cover crop cultivation. Sub-soil, particularly, all components of soil chemical properties showed higher value in winter rye cultivation than conventional cultivation. Higher soil density was observed on cover crop cultivation than conventional cultivation resulting from root residues of the cover crop both topsoil and subsoil. Cover crop residues positively affected plant growth and reduced the amount of soil erosion by holding the soil. Although severe soil erosion was seen in conventional cultivation, winter rye cultivation declined soil erosion by 47% during the fallow period on potato slope fields. Distinct soil bacterial communities were detected among treatments and some OTU(Operational Taxonomic Unit)s showed significantly higher abundance in winter rye treatment. Total yield and commercial rate demonstrated no significant differences while higher tuber phosphate, K+, and Mg2+ contents were observed in winter rye cultivation.

Abstract
1. 서 론
2. 재료 및 방법
    2.1. 시험 포장 조성 및 시험 설계
    2.2. 토양 화학성 분석
    2.3. 토양 물리성 분석
    2.4. 토양 미생물군집 분석
    2.5. 토양 유실량 및 물 유출량 조사
    2.6. 작물 수확 조사
    2.7. 통계 처리 및 토양미생물 군집분석
3. 결과 및 고찰
    3.1. 동계 호밀재배에 따른 토양 이화학성 변화
    3.2. 동계 호밀재배에 따른 작물 휴한기 토양보전 효과
    3.3. 동계 호밀재배에 따른 토양 미생물군집 특성
    3.4. 동계 호밀재배에 따른 감자 생산성 분석
4. 결 론
REFERENCES

• 백계령(국립식량과학원 고령지농업연구소) | Bak Gyeryeong (Highland Agriculture Research Institute, National Institute of Crop Science) Corresponding author
• 이정태(국립식량과학원 고령지농업연구소) | Lee Jeong-Tae (Highland Agriculture Research Institute, National Institute of Crop Science)