초록

Ⅲ. 연구개발의 내용 및 범위
○ 식물성 자연분해비닐을 이용한 논 잡초관리 기술개발
○ 식물성 자연분해비닐의 개발 및 물리화학적 특성연구
○ 식물성 자연분해비닐 피복이 논토양 및 물환경에 미치는 영향
○ 얼치기완두 피복고추 재배기술 개발
○ 얼치기완두 피복재배시 병해충 발생양상구명
○ 피복작물이용 유기농 콩밭 잡초 제어연구
○ 피복작물이용 유기농 논 잡초 제어연구

Abstract ▼

Among the developed bio-degradable polymer films as compared with transparent film(White), black polymer film was significantly more effective for controlling weeds in red pepper. Also, we found that white and black polymer mulching had 81.8% and 97.9% of managing weed controlling effects in rice, r

Among the developed bio-degradable polymer films as compared with transparent film(White), black polymer film was significantly more effective for controlling weeds in red pepper. Also, we found that white and black polymer mulching had 81.8% and 97.9% of managing weed controlling effects in rice, respectively. Compared to non-mulched rice paddy with water supply, the non-mulched rice paddy without any water supply has stopped its growth at 41 days after transplanting, while polymer-mulched rice paddy without water supply had about 60% of normally growing rice plants. This shows the polymer treatment has a remarkable effect on water and power saving, solution of herbicidal resistance, avoidance of herbicidal influence to eco-system etc. When the naturally decomposing polymer was used, a temperature was elevated as high as 4.7°C on maximum and 2.6°C on average. Also the naturally decomposing polymer accelerated rooting by 7 days and lowered a stress level from transplanting. The weed control effect mulched by polymer was remarkable as 98.7%. The polymer now, after 294 days treated on the rice paddy, has been completely decomposed.
A series of experiments were conducted to investigate the development of naturally degradable Ride-Polymer for the control of common weeds and herbicidal resistant weeds in paddy field. The physico-chemical properties of Rice-Polymer, such as tensile strength, tearing strength, and elongation percentage are decreased as compared with conventional polyethylene film. After covering with the Rice-Polymer at rice transplanting by machine, the effect of weed control came out as 98.4% on 32nd day and 94.5% on 60th day. The weed control effects of Rice-Polymer were 100% for broad-leaves weed, 99.5% for gramineous weed and 83.2% for cyperaceae weed. The order of weed controlling effects were broad-leaves, gramineous, cyperaceae weed in descending order. The black Rice-Polymer have more capacity on weed control than the white one has. Also the Rice-Polymer that has been manufactured in the current year has greater effect on weed control than the one had been manufactured last year. 90% of Rice-Polymer has been decomposed after covering at 150th day. But only 5% of general polyethylene film has been decomposed at 150th day. The decomposition rates of the Rice-Polymer are 75% at 110th day, 90% at 150th day, and 99.9% at 300th day. Especially, weeding effect as influenced by Rice-Polymer mulching in sulfonyl-urea resistant weeds was 98.7%.
This experiment was carried out to develop the caltivating method of hot pepper with cover crop. Vicia tetrasperma and Vicia hirsuta were seeded on September as cover crop, and hot pepper was transplanted on May. The major winter annual was Capsella bursa-pastoris in cover corp field, but had no effects on growth and yield of transplanted hot pepper. The major summer annuls were Echinochloa crus-galli(L.) P. Beauv, D igitaria ciliaris and Commelina commuis. Vicia tetrasperma and Vicia hirsuta covered the hot pepper field effectively, and their weed surppressive ability was maintained until havast period of hot pepper.

목차 Contents

• 표지 ... 1
• 제출문 ... 2
• 요약문 ... 3
• SUMMARY ... 4
• 제 1 장 서 론 ... 6
• 제 2 장 국내외 기술개발 현황 ... 7
• 제 3 장 연구개발수행 내용 및 결과 ... 8
• 제 4 장 연구개발목표 달성도 및 대외기여도 ... 45
• 제 1 절 목표대비 대외달성도 ... 45
• 제 2 절 정량적 성과 ... 46
• 제 5 장 연구개발결과의 활용계획 ... 47
• 제 6 장 연구개발과정에서 수집한 해외과학기술정보 ... 49
• 제 7 장 기타 중요 변동사항 ... 49
• 제 8 장 국가과학기술종합정보시스템에 등록한 연구장비 현황 ... 49
• 제 9 장 참고문헌 ... 49