匍匐翦股穎在華東過渡型氣候區夏季高溫的表現及常用有機資材之輔助效用評估

Abstract

為因應氣候變遷所造成的生育條件改變，在溫帶型草坪上原本就屬於夏季高溫逆境的議題上，設計了相關的現場試驗區與人工控制氣候條件試驗，以評估匍匐翦股穎的生育反應。共有來自三家美國主要的草坪種子公司，所提供的15個主力商用品種，在中國華東地區的四座標準高爾夫球場所設置的草種試驗區進行試驗，評估的項目包括根長與草塊的生質量。在經過夏季高溫的過程中，評估各參試草種受評估的性狀的表現後，發現品種與地區間存在明顯的交感作用，依據收集相關溫度與濕度的資料，進行分析發現此兩項氣象條件組合的確會影響調查性狀的反應。為了協助匍匐翦股穎能在夏季高溫逆境下維持適當的品質，本研究進行了有機輔助資材的試驗，結果發現出了蚯蚓糞肥單劑施用效果不明顯外，其餘的處理組合皆可以增加草坪草的表現。除了夏季高溫逆境之外，中國華東地區梅雨季節前後的快速升溫的高溫逆境議題，本研究利用人工氣候室進行模擬，並配合有機輔助資材的施用，發現參試品種的表現與有機輔助資材的表現仍有待加強。

This paper sets out to investigate 1) the impacts climate change and 2) the effects organic supplements, have on the growth performance of creeping bentgrass. The adaptability of this cool-season grass in eastern China will be examined, based on data collected from both the phytotron and the test-sites situated on-site of 4 standard golf courses in eastern China. The evaluation of the experiments is based on the observations of the characteristics and adaptabilities of 15 selected turfgrass varieties from three major U.S. seed companies put through the 'summer stress', with specific indicators for comparison of acclimatization such as the root-length and the biomass of the chosen subjects. The adaptability of the subjects was put through a further test of their receptivity to a variety of common organic supplements. In the phytotron, the subjects were put through the simulation of the passing of a sub-tropical monsoon season typified by the symptomatic post-season spike in temperature. The performance of the organic supplements was inconclusive within the set parameters. On the other hand, the on-site experiment has produced more determinate and promising results. With discrete climatic conditions, the differences in the combinations of the temperatures and humidity of the 4 golf courses have significant and varied effects on root-length and bio-mass of these subjects and interacted heavily with the turfgrass varieties. As for the subjects’ receptivity to the organic supplements, with the sole exception of worm casts administered in isolation, there were notable effects on the overall production yield.