頁籤選單縮合
題名 | 2003年花東地區茶樹旱害調查及其對產量之影響=Study on Drought Injury and Its Effect on Tea Production in Hualien and Taitung in 2003 |
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作者 | 鄭混元; 范宏杰; | 書刊名 | 臺灣茶業研究彙報 |
卷期 | 23 民93.11 |
頁次 | 頁31-44 |
分類號 | 434.81 |
關鍵詞 | 茶園; 茶樹; 旱害; 異常氣候; 減產; Tea garden; Tea tree; Drought injury; Abnormal weather; Yield decline; |
語文 | 中文(Chinese) |
中文摘要 | 本文在探討2003年花東地區旱害發生的原因及其對茶葉生產的影響。首先釐清茶樹旱害發生的直接及間接因子,其次說明茶樹受旱情形,最後則評估旱害對當季及次季茶產量的影響。由調查分析顯示,茶樹旱害發生之自然因素主要在於異常氣候以致長期沒有下雨及高溫與高日射量,為引發旱害之直接因子。其次由土壤環境障礙加速旱害發生程度,為此次旱害之間接因子。非自然因素為人為栽培管理不當使得茶樹旱害更為嚴重。由田間調查也顯示,旱害對青心烏龍生產有非常嚴重的影響,尤其對樹勢衰弱之老茶園影響更明顯。也發現部分樹勢強壯之青心烏龍品種具高抗旱力,其種原值得開發利用。由於缺乏長期田間調查資料,不易評估旱害減產,因此極需建置不同耐旱品種試驗園區,才能結合農業氣象災害及氣象因子來研析其對茶葉生產之影響,藉以創新防護方法提升茶園防旱技術。 |
英文摘要 | This study is aimed at understanding the cause of drought injury and its effect on tea tree (Camellia Sinensis (L.) O. Kuntze) production in Hualien and Taitung in 2003. The first objective is to elucidate the direct and indirect factors causing drought injury on tea trees, and then explain its situation in 2003. The final objective is to estimate the effect of drought injury on the yield in this and the next tea season. The results of this study showed that the primary factor causing drought injury was due mainly to the abnormal weather without rainfall for a long period time. This, in combination with high temperature and solar radiation, was determined as the major factors to cause drought injury. To a lesser extent, soil conditions acted as an indirect factor contributing to the drought injury. In addition, the results showed that a non-natural factor such as poor field management aggravated the seriousness of drought conditions in the production of Chin-Shin-Oolong, especially on weak trees in older tea gardens. Also, the results indicated that trees with strong growth demonstrated higher drought resistance; thus the germplasm is worthy of development for further utilization. Due to the lack of field data on long term monitoring of drought injury on tea trees, a reliable estimation of its effect on yield decline on tea trees is difficult. Therefore it is necessary to establish experimental plots for testing drought tolerant cultivars. It will enable the integration of information on natural disasters and their related meteorological conditions and its effect on tea production. Ultimately, a new, innovative measure can be developed to enhance the drought prevention techniques in tea gardens. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。