Pa-107 積雪寒冷地におけるススキ(Miscanthus sinensis)をバイオマス作物とし利用する原料生産のシナリオ(1.資源,ポスターセッション1)

概要

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Utilization of energy crop is the major option for stable bioenergy production at low cost and that will not compete with food production. Further energy crop must be grown in marginal land. The objective of this study is establishing the scenario for bioenergy feedstock production using wild Miscanthus species in cold and snowfall area (CSA) where is not suitable for biomass production (BP) due to short and stressful growing season. 43 wild accessions of M. sinensis from different areas were grown side-by-side at an experiment field in CSA to identify major factors involved feedstock production. The study was carried out for four growing seasons (2008, 2009, 2010, 2011). From 2008 and 2009 studies, large variability among wild lines was observed and then five high yield performance lines were selected under non fertilization conditions. In the study from 2010 to 2011, selected breeding lines were used to evaluate the effect of field managements to B_P. Finally, a scenario was established integrating environment (temperature, growing degree-days), M. sinensis genotypes (morphological growth duration), field management (weed control, fertilization) and harvesting time. Although the harvesting time remains under consideration, it could be applicable that wild M. sinensis is domesticated as a promising energy crop in cold region with BP between 25〜30 t ha^<-1> without fertilizer input.
2012-12-25