頁籤選單縮合
題 名 | Effect of Cutting Stage on Forage Yield and Quality of Nilegrass and Pangolagrass=收割期對尼羅草及盤固草產量及品質之影響 |
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作 者 | 許福星; 張世融; 洪國源; | 書刊名 | 作物、環境與生物資訊 |
卷 期 | 2:4 民94.12 |
頁 次 | 頁282-286 |
分類號 | 434.4 |
關鍵詞 | 尼羅草; 盤固草; 收割期; 牧草產量; 牧草品質; Acroceras macrum; Digitaria decumbens; Cutting stage; Forage yield; Forage quality; |
語 文 | 英文(English) |
中文摘要 | 摘要 尼羅草(Acroceras macrum)是C3 型多年 生禾本科牧草,盤固草(Digitaria decumbens) 則為C4 型牧草。本試驗研究之目的乃在探討 不同割期對尼羅草及盤固草產量及品質之影 響。本試驗採用前期收割後生長4、6、8 及10 週等四個割期,在前三年,尼羅草及盤固草的 鮮重及乾重產量均隨著割期的延後而增加,然 而在第四年,該兩品種10 週收割之產量反而 比8 週者為低,尼羅草之產量除6 週者外,其 餘均比盤固草顯著為高。尼羅草及盤固草粗蛋 白質含量均隨著割期的延後而降低,而中洗纖 維(NDF)及酸洗纖維(ADF)含量則隨割期 延後而增加,尼羅草水溶性碳水化合物(WSC) 含量於各不同割期間沒有顯著差異,而盤固草 的WSC 則隨著割期的延後而增加,盤固草各 割期的WSC 均比尼羅草為高,兩者牧草地土 壤中pH 值均隨者割期延後而提高,茲建議尼 羅草於6 及8 週收割可獲得較高的產量及品 質。 |
英文摘要 | ABSTRACT Nilegrass (Acroceras macrum) is a C3 perennial forage grass while pangolagrass (Digitaria decumbens) is a C4 species. The objectives of this study were to determine the effects of different cutting stages on forage yield and quality of nilegrass and pangolagrass. Four cutting stages, i.e., 4, 6, 8 and 10 weeks after the previous cutting, were used in the experiment. Both fresh and dry weights of nilegrass and pangolagrass increased with later cutting stages in the first 3 years. However, the forage yields of these two species cut after 10 weeks were lower than those cut after 8 weeks in the 4th year. Nilegrass produced significantly higher forage yield than pangolagrass did for all cutting stages except cutting after 6 weeks. The crude protein contents of both nilegrass and pangolagrass decreased with the delayed cutting stages, while those of neutral detergent fiber (NDF) and acid detergent fiber (ADF) increased with later cutting stages. No significant difference was observed for the contents of water soluble carbohydrate (WSC) of nilegrass among cutting stages. However, WSC of pangolagrass increased with the advancement of cutting stages. Pangolagrass had higher content of WSC than nilegrass did for all the cutting stages. The pH value of the soil increased with cutting stages in forage land cultivated with either nilegrass or pangolagrass. Results suggest that nilegrass harvested between 6 and 8 weeks may produce higher forage yield and quality. |
本系統中英文摘要資訊取自各篇刊載內容。