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題 名 | 水芋收穫指數的動態模式=Dynamic Model of Harvest Index in Wetland Taro [Colocasia esculenta(L.) Schott] |
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作 者 | 呂秀英; 呂椿棠; 陳烈夫; | 書刊名 | 中華農業研究 |
卷 期 | 48:2 1999.06[民88.06] |
頁 次 | 頁86-99 |
分類號 | 434.339 |
關鍵詞 | 水芋; 收穫指數; 動態模式; 三相分段線性函數; 季節性變異; Wetland taro; Harvest index; Dynamic model; Three-phase piecewise linear function; Seasonal variation; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究之目的在建立水芋收穫指數之動態模式,並進而探討模式之生長參數估計值在不同種植期下的季節變異性,以解析其對最終收穫指數的影響。模式呈一種連續的三相分段線性函數,不但所有種植期下的水芋收穫指數都能配合模式良好,同時該模式能解釋收穫指數總變異的能力高達95%以上。從模式中可推測出收穫指數在遲滯期、線性增加期及成熟期之三個直線階段的速率及持續時間。根據動態模式之解析,可知收穫指數線性增加期的開始及結束受到栽培季節之氣象變化影響甚鉅,故造成最終收穫指數在不同種植期之間的季節性差異。水芋最終收穫指數之表現主要決定於線性增加期收穫指數的增加速率及持續時間,而以時間長短最為重要。至於遲滯期及成熟期的影響則不大。 |
英文摘要 | The objective of this study was to develop a dynamic model of harvest index (HI) in wetland taro. Based on this model, we investigated the seasonal variation of the estimates of growth parameters under different transplanting months, and examined its effect on final HI. The responses of HI with time under different transplanting months were all fitted well using a continuous three-phase piecewise linear function. This model explained more than 95% of total harvest index variation. The rater and duration of linear HI increase for each linear phase (lag, increase, maturity) were then predicted. Climatic factors affected the onset and cessation of linear HI increase. This resulted in the seasonal variation of final HI under different transplanting months. The duration of HI linear increase appeared to be more important for final HI. The rate and duration during lag phase and maturity stage had no significant effect on final HI. |
本系統中英文摘要資訊取自各篇刊載內容。