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題名 | 薏苡栽培技術改進試驗= |
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作者 | 曾勝雄; |
期刊 | 臺中區農業改良場研究彙報 |
出版日期 | 19950900 |
卷期 | 48 1995.09[民84.09] |
頁次 | 頁47-54 |
分類號 | 434.197 |
語文 | chi |
關鍵詞 | 薏苡; 播種期; 栽培密度; 氮肥管理; 產量; Coix lachryma-jobi; Sowing date; Plant spacing; N management; Yield; |
中文摘要 | 為提高本省薏苡單位面積產量,於1990年春作在臺中地區以臺中選育 5號及岡山在來兩個品種(系)為材料,進行播種期、栽培密度與氮肥施用量及施 用方法試驗。試驗結果顯示薏苡不宜早植,在三月下旬以後播種較為適宜,又以 四月上旬播種的產量最高。在栽培密度方面,以行株距40×10及50×15cm的產 量高於60×20cm處理的產量,亦即適度密植具有增產效果。薏苡對氮肥的需要 量較高,將公頃氮素肥料用量自目前推薦之180kg增加至220kg,可以顯著提高 產量。於薏苡幼穗形成期至齊穗期之間,增加施用氮肥之追肥用量及次數,可大 幅提高產量,顯示薏苡植株在生育中、後期對氮素的需求量高,後期施用氮肥極 為重要。臺中選育5號的產量較岡山在來種為高,但兩個品種(系)對栽培方法的 反應則相類似。薏苡的產量受一株小穗數的影響最大,其次為稔實率及千粒重, 一株分蘗數的作用較小,可供為今後品種選育及改進栽培技術之參考。 |
英文摘要 | Job's-tears is considered as a source of healthy foods with high economic value. However, the cultural techniques of this crop has not been established. Experiments were conducted to investigate the effects of sowing date, plant spacing, and N management on the growth and yield of job's-tears in the spring crop of 1990. Two cultivars, Taichung Selection Yu 5 and Kangshan Native were used as materials and the experiments were held in Changhua area, central Taiwan. The results indicated that early planting was not suitable for cultivating job's-tears. The recommended sowing date was from late March to early April for higher grain yield. For planting density, the spacings of 40×10 and 50×15cm were better than 60×20cm in terms of improved grain yield. The N requirement by job's-tears was high as yield increase was significant when rate of N fertilization was adjusted from 180 to 220 kg/ha. Split top dressings of N fertilizer for three to four times during the period from panicle formation to complete heading were suggested due to high N demand by the plants during grain ripening. In general, the yield potential of Taichung Selection Yu 5 was higher than that of Kangshan Native in spite of the similar trend of growth responses to the cultural management. The yield of job's-tears was affected most significantly by the spikelet number per plant, followed by the percentage of ripened grains and 1,000-grain weight. The tiller number per plant was of less importance in the determination of grain yield. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。