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임간재배지 내 부엽토 및 차광수준에 따른 갯기름나물의 광합성과 엽생장 특성

Characteristics of Photosynthesis and Leaf Growth of Peucedanum japonicum by Leaf Mold and Shading Level in Forest Farming

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초록

This study was carried out in order to investigate the photosynthesis response and leaf characteristics of Peucedanumjaponicum growing in forest farming. The experiment was performed by leaf mold (pine tree and chestnut tree)and shading levels (0%, 35%, 50% and 75% shading). Light relative intensity was 100% (full sunlight), 60.3% (35% shading),35.1% (50% shading), and 17.4% (75% shading) respectively. Light response curves of pine-leaf mold and chestnutleafmold were the highest in control (full sunlight) and these were getting lower in the higher shading level. Photosynthesiscapacity and light saturation point were indicated higher in chestnut-leaf mold within the same shading level. As the shadinglevel increased, maximum photosynthesis rate decreased. And apparent quantum yield was not indicated statistically significantdifference from all treatment. Leaf area, leaf length and leaf width were significant higher in 35% shading and controlunder chestnut-leaf mold in all treatment. As the shading level increased, LAR (leaf area ratio), SLA (specific leaf area) andSPAD value decreased in pine-leaf mold and chestnut-leaf mold. As a result of surveying the whole experiment, P. japonicumis judged better growth and higher yield by maintaining 35% shading (relative light intensity 60%) under chestnut-leafmold in forest farming.

Abstract

This study was carried out in order to investigate the photosynthesis response and leaf characteristics of Peucedanumjaponicum growing in forest farming. The experiment was performed by leaf mold (pine tree and chestnut tree)and shading levels (0%, 35%, 50% and 75% shading). Light relative intensity was 100% (full sunlight), 60.3% (35% shading),35.1% (50% shading), and 17.4% (75% shading) respectively. Light response curves of pine-leaf mold and chestnutleafmold were the highest in control (full sunlight) and these were getting lower in the higher shading level. Photosynthesiscapacity and light saturation point were indicated higher in chestnut-leaf mold within the same shading level. As the shadinglevel increased, maximum photosynthesis rate decreased. And apparent quantum yield was not indicated statistically significantdifference from all treatment. Leaf area, leaf length and leaf width were significant higher in 35% shading and controlunder chestnut-leaf mold in all treatment. As the shading level increased, LAR (leaf area ratio), SLA (specific leaf area) andSPAD value decreased in pine-leaf mold and chestnut-leaf mold. As a result of surveying the whole experiment, P. japonicumis judged better growth and higher yield by maintaining 35% shading (relative light intensity 60%) under chestnut-leafmold in forest farming.

참고문헌 (32)

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