查詢結果分析
來源資料
頁籤選單縮合
題名 | 苗栗沿海四鄉鎮水稻天然災害之調查 |
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作者 | 林孟輝; 方再秋; 林芳洲; | 書刊名 | 桃園區農業改良場研究報告 |
卷期 | 23 1995.12[民84.12] |
頁次 | 頁32-39 |
分類號 | 434.111 |
關鍵詞 | 水稻; 天然災害; Rice; Natural disaster; |
語文 | 中文(Chinese) |
中文摘要 | 1993年6月1日及2日由於豪雨(累積雨量達200公庫以上),造成水稻田遭掩埋,使得千粒重、稔實率及一穗粒數明顯下降,導致台農67號之公頃產量只有對照區的45.1~83.2%,而台中育284號則降至62.9~66.7%。此外,同年之8月、9月及10月國持續之乾旱,使得水稻生育受到嚴重旱害。其中移植稻台?8號於孕穗期缺水時,其產量只有對照區的16.1%,而齊穗後缺水,其產量為對照區的63.7%;至於再生稻台?5號於抽穗期缺水時,其產量分別為對照區的27.4~49.8%。兩者低產原因皆是因千粒重、稔實率及一穗粒數明顯下降所致。 |
英文摘要 | The objectives of this investigation were to find out the effects of heavy rainfall in the 1st crop season and the long term drought hazard in the 2nd crop season of 1993 on rice yield and yield components. The data collected showed that rice fields were covered with thick sands after high cumulative rainfall of over 200mm in the 1st and 2nd June of 1993 and resulted in decreased 1000-seed weight, fertility and spikeletsper panicle. Thus the grain yield of Tainung 67 and Taichung Yu 284 reduced to 45.1-83.2% and 62.9-66.7%, respectively. A long period of drought from August through October of 1993 caused serious retard of rice growth. The grain yield of Taikeng 8 reduced about 16.1 %, when drought happened at boot stage. While only 63.7% of grain yield was obtained when without irrigation at heading stage. The yield of ratoon rice Taikeng 5 reduced to 27.4-49.8% without irrigation at panicle initiation stage. The causes of lower grain yield were attributed to decrease of 1000-seed weight, fertility and spikelets per panicle. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。