頁籤選單縮合
題 名 | 水稻再生栽培對稻米產量及品質之影響(1)--割樁高度處理之效應=Effects of Cultural Practices on the Grain Yield and Quality of Ratoon Rice(1)--Effects of Cutting Height of Ratoon Seedlings |
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作 者 | 丁全孝; 劉瑋婷; | 書刊名 | 花蓮區農業改良場研究彙報 |
卷 期 | 13 1997.01[民86.01] |
頁 次 | 頁17-33 |
分類號 | 434.116 |
關鍵詞 | 水稻; 再生栽培; 米質; Rice; Oryza satjva L.; Ratoon rice culture; Rice quality; |
語 文 | 中文(Chinese) |
中文摘要 | 為探討水稻再生栽培不同割樁高度對產量及米質之影響,於82年及83年在花蓮縣吉安鄉花蓮區農業改良場進行試驗;參試品種為梗稻臺梗6號,第1期作機插栽培,第2期作再生栽培。第1期作收穫後再生芽伸長至15∼20cm時,進行不同割樁高度處理,分別為離地面5、10、15cm及不割樁,以機插栽培為對照。田間設計採用逢機完全區集摺疊設計,四重複,小區面積27㎡,調查其再生期作之農藝性狀、產量及稻米品質的表現,以做為改進再生栽培技術之參考。 試驗結果顯示割樁高度離地面5cm處理能明顯改善再生稻抽穗不整齊的現象,再生栽培各處理之產量均較機插栽培(兩年分別為4,376及4,496kg/ha)為低,但仍以割樁高度5cm處理(3,208及3,771kg/ha)與10cm處理(3,203及3,958kg/ha)高於不割樁處理(2,664及3,296kg/ha)。再生稻糙米外觀及碾米品質不如對照區機插栽培,但再生處理中仍以低割樁高度者表現較佳;在食味方面,再生栽培亦較機插栽培為差。綜合而言,降低割樁高度至5cm,對改善再生稻的產量及品質有顯著的效果。 |
英文摘要 | Field experiments were conducted in 1993 and 1994 at Hualien District Agricultural Experiment Station to study the effects of recutting height of ratoon seedlings on the yield and quality of rice. The japonica rice cultivar Taikeng 6 was grown in the first crop by transplanting culture followed by ratoon culture in the 2nd crop. After the lst crop rice was harvestd, the ratoon seedlings of 15-20 cm in height were cut with a mechanized device at the following heights: 5, 10, and 15 cm aboveground; the fouth treatment was non-cutting while the conventional transplanting culture was used as the check. Experimental design were arranged in a nested randomized complete block with four replications, and the plot sizes wase 27 m2. The performance of agronomic characteristics, and grain yield and quality of the ratoon rice were evaluated. Experimental results indicated that cutting treatment, especially at 5 cm above-ground, improved heading uniformity of the ratoon rice by shortening the duration needed for complete extrusion of panicles of the whole plot. Grain yield of the ratoon rice, irrespective of cutting height treatment, was lower than that of the transplanted rice (4,376 and 4,496 kg/ha) and 10 cm (3,203 and 3,958 kg/ha) aboveground were superior to non-cutting treatment (2,664 and 3,296 kg/ha) in grain yield. Although the appearance and milling quality of the ratoon rice were poorer in comparison to those of the transplanted rice, the positive effects of cutting treatments were significant. Eating quality of the ratoon rice was also lower than that of the transplanted rice. In conclusion, ratoon rice is not comparable to transplanted rice in terms of both grain yield and quality, nevetheless, cutting the ratoon seedlins at 5 cm is worth to be recommended for this labor-saving practices as it improves significantly the performance of ratoon rice. |
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