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| 題 名 | 水稻再生栽培法之研究 |
|---|---|
| 作 者 | 侯福分; 談嘉俊; | 書刊名 | 臺中區農業改良場研究彙報 |
| 卷 期 | 7 1983.12[民72.12] |
| 頁 次 | 頁9-22 |
| 分類號 | 434.111 |
| 關鍵詞 | 水稻; 再生; 栽培; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 1975年起在台中及花壇兩地舉辦再生稻栽培法試驗,結果顯示品種間 再生芽之萌發及再生稻之產量有顯著的差異。再生稻產量與再生率成正相關,即 再生率愈高者其再生稻之產量也愈高,其迴歸方程式為y=0.9+0.04x,r=0.757**。 不同之灌排水處理以續灌區之產量較佳,排水區由于後期排水,導致收割時田間 水分太少,影響再生芽之萌發。再生稻因不必經過整地、播種、育苗等程序,因 此較移植稻可節省38%之勞力及22%之生產成本,1975年在花壇之試驗區,再 生稻之淨收益較移植稻增加16.5%。對于再生芽萌發最有利之收割時期隨品種而異, 在本試驗中台中秈三號于抽穗後33天,台南五號于抽穗後38天獲得較好之再生能力。 不同之稻樁處理,對再生稻之產量有顯著的影響。再割一次之處理產量最高,此種 處理再生芽之萌發整育,抽穗期也較一致。再生稻每公頃施用110公斤氮素之處理, 其穀粒產量較施用80公斤者增加13.9%。不同之施肥法以深層施肥產量最高,較對照 處理增加16.8%,此種處理之肥效較長,至收割時葉色呈深綠色,枯葉較少。品種間 之再生能力與稻桿基部碳水化合物之含量成正相關。 |
| 英文摘要 | To study the effects of agronomic practices on the bud sprouting, growth and grain yield of ratoon rice, experiments were conducted at Taichung and HwaTan during 1975 to 1979 crop seasons. The results showed that grain yields of ratoon crop were significantly different among tested varieties. The performance of ratoon yield was mainly depended on the ratooning ability, and water management also influenced the ratoon yield. Drained surface water from milk stage to harvest of main crop inhibited ratoon bud sprouting, on the other hand, continuously flooding at late stage in favor of ratooning, hence, the yield from these treatments were significantly higher than that of surface drainage plots. Data collected from demonstration farm showed that the labor requirement for ratoon rice was 38 percent less than that of conventional transplanting method by eliminating the labor for raising seedlings in the seedbed, land preparation and transplanting to paddy field. The ratoon rice could save 22 percent of production cost and to increase the net profit by 16.5%. The ratoon ability was affected by the harvest time of main crop, however, it varied with varieties. Better bud sprouting was obtained when Taichung Sen 3 was harvested at 33 days after heading (DAH), for Tainan 5 at 38 DAH was more feasible for ratooning. Cutting height of main crop significantly influenced the grain yield of ratoon rice. The highest grain yield was obtained from the plots treated as harvested at 15 cm from ground level, and cut 3 cm from grand level again when ratoon tillers have grown about 15 cm. This treatment was found having uniform bud sprouting and heading. Cut at 15 cm from ground level, the heading of plants was hastened and irregular flowering was found in this treatment. The grain yield increased by 13.6 percent, when nitrogen application increased from 80 to 110 kg/ha. Deep placed nitrogen at 10 cm of soil layer was found to increase 16.7 percent of ratoon yield as compared to the control. The leaves of plants in these plots was more dark green at harvest. Ratoon ability were significantly correlated with carbohydrate content in the basal part of clum at harvest. |
本系統中英文摘要資訊取自各篇刊載內容。