作物模式應用於水稻灌溉策略之研擬

Application of crop modeling in developing rice irrigation strategies

劉力瑜(Li-yu Daisy Liu)；李昇峰(Sheng-Feng Li)

水稻 ； 灌溉 ； 作物模式 ； 調適策略 ； Rice ； Irrigation ； Crop model ； Adaptation strategy

臺中區農業改良場特刊

151號（2023 / 10 / 01）

46 - 56

繁體中文;英文

臺灣受氣候變遷的影響，雖然年總雨量變化不明顯，但極端降雨量發生的頻率提高，作物更易遭受乾旱或淹水的逆境，因應氣候變遷衝擊和挑戰，臺灣農業生產作物品質，需發展更有彈性的調適策略。本研究以DSSAT CERES-RICE作物模式，以網格化的土壤與氣象重建資訊，配合臺灣由南至北不同的插秧日期，模擬‘台稉9號’、‘台南11號’、‘台南16號’、‘桃園3號’、‘台農71號’等五種臺灣主要栽培稻品種在無灌溉情境下的產量，藉以評估水稻於乾旱逆境下的減產風險。未來還能根據不同情境規劃更精緻的灌溉供水排程模擬，作為農業耕作調適參考之基礎。

Impacted by the forces of climate change, Taiwan's annual rainfall has remained relatively constant; however, there has been a discernible rise in the occurrence of intense rainfall events. This heightened frequency of extreme precipitation renders crops increasingly susceptible to the dual challenges of droughts and flooding. In light of these evolving climatic influences, the agricultural sector in Taiwan must actively cultivate more resilient and adaptable strategies to bolster both production and crop quality. This study employs the DSSAT CERES-RICE crop model, coupled with gridded soil and meteorological data reconstruction. Accounting for varying transplanting dates from south to north Taiwan, the study simulates the yields of five rice cultivars, including Taiken 9, Tainan 11, Tainan 16, Taoyuan 3, and Tainung 71, under non-irrigated conditions. The aim is to assess the risk of reduced rice yields under drought stress. Furthermore, future endeavors could involve the refinement of irrigation and water supply scheduling simulations under different scenarios, serving as a foundational reference for agricultural cultivation adaptations.