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來源資料
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題 名 | 穀粒充實期土壤水份境況對水稻生育及米質及影響 |
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作 者 | 李健捀; 陳世雄; 許愛娜; 宋勳; | 書刊名 | 臺中區農業改良場研究彙報 |
卷 期 | 39 1993.06[民82.06] |
頁 次 | 頁41-50 |
分類號 | 434.111 |
關鍵詞 | 水稻; 土壤水分境況; 米質; Rice; Soil moisture regime; Rice quality; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗目的在探討水稻榖粒充實期間,減少田間灌溉水量及灌溉次數 之可行性。1992年一、二期作分別在中興大學農場進行田間試驗。採裂區設計, 以品種為主區,比較梗稻臺中189號及秈稻臺中秈10號兩品種,對土壤水分之 反應。以15cm深度土壤水分張力處理為副區,分別以0.00MPa(連續浸水), 0.02MPa及0.04MPa三等級土壤水分張力,做為灌溉起點。試驗結果顯示在水稻 穀粒充實期,兩個較高等級土壤水分張力處理,平均各需5天(0.02MPa)及7天 (0.04MPa)才會到達灌溉起點。因此,提高土壤水分張力之處理,已明顯達到節 省灌溉用水之目的。同時在0.02MPa之處理,有增加稻穀產量之趨勢。穀粒充 實期提高土壤水分張力,對於水稻之碾米品質、白米外觀、烹調及食用品質均不 會有不利影響。多項式迴歸分析顯示在穀粒充實期,適當減少灌溉水,一期作提 高土壤水分張力至0.018MPa,二期作則提高至0.027MPa做為灌溉起點,可以得 到最高的產量,似可作為稻田土壤水分管理之參考,同時也顯示二期作臺灣稻田 土壤通氣不良的情況,需要較高的土壤張力改善土壤通氣。 |
英文摘要 | The experiments were conducted in the first and second crops of 1992 to investigate the effect of soil moisture regime on the growth and quality of two rice cultivars, Taichung 189 and Taichung sen 10. Two levels of soil moisture tension were practiced by soil-drying to reach 0.02, and 0.04 MPa before next irrigation. The control(0.00 MPa) group was submerged continuously. The results showed that the treatment plots needed 5 and 7 days drying to reach 0.02 and 0.04 MPa before next irrigation, respectively. It was showed that irrigation water was been saved. The grain yield in 0.02 MPa treatment was the highest, while the milling quality, chemical properties, physical properties and eating quality of rice with 0.02 and 0.04 MPa treatments were the same as the control. According to polynomial regression anaiysis, soil-drying to reach a soil moisture tension of 0.018 MPa in the first crop, and 0.027 MPa in the second crop, respectively, are recommended for management of soil moisture regime during grain filling stage.The optimum soil moistuve tension on the second crop was higher than that of the first crop, presumably due to the poorer soil aeration of the second crop rice in Taiwan.A higher soil moisture tension practice in the second crop was suggested to improve the adverse condition. |
本系統中英文摘要資訊取自各篇刊載內容。