不同種植時期對長形山藥生育與產量之影響

Effects of Planting Date on Growth and Yield of Long-shaped Yam (Dioscorea batatas)

黃鵬(Peng Hwang) ； 蔡淳瑩(Chun-Ying Tsai)

《花蓮區農業改良場研究彙報》 11期 (1995/05) Pp. 11-18

https://doi.org/10.6957/RBHDAIS.199505.0011

摘要

為探討長形山藥之適宜種植時期，將長形山藥壽豐品種塊莖催芽後於1993年3、4、5及6月中旬分別種植。試驗結果顯示公頃產量以4月中旬種植者產量最高達15.0公噸，其次3月及5月之14.6公噸及12.2公噸，6月最低為6.3公噸。3、4及5月種植者於6月時多已萌芽且生長迅速，而此時6月種植者萌芽率仍低。6月種植者葉片雖較其他處理延後黃化，但單株產量低，且其萌芽率亦較3月、4月、5月種植者為低，故單位面積產量最低。在1994年重複此試驗，試驗結果以4月中旬種植者產量最高每公頃為13.0公噸，其次為5月種植者12.4公噸，而以3月及6月種植者之4.6公噸及2.2公噸為最低。綜合二年之結果，長形山藥壽豐品種定植期以4月為適，不可晚於5月，遲至6月定植者則產量銳減，而3月受氣候影響產量不穩定。

關鍵字

山藥 ； 種植時期 ； 塊莖 ； 休眠 ； 萌芽

並列摘要

To determine the optimum planting date of long-shaped yam 'Show-Feng', the seed tubers were planted in middle March, April, May and June in 1993, separately. The results showed that the maximum yield 15.0 M.T./ha was obtained as planted in middle April, then 14.6 and 12.2 M.T./ha planted in March and May. The minimum yield 6.3 M.T./ha was found as planted in June. Most of the tubers sprouted in June as planted in middle March, April, and May. As planted in June, the minimum yield was due to the low sprouting rate and the low yield per plant. The experiment was repeated in 1994. The maximum yield 13.0 M.T./ha was also found as planted in middle April, then 12.4 M.T./ha in May. The yields planted in March and June were 4.6 and 2.2 M.T./ha, respectively. According to these results, April is recommended as the optimum planting date for long-shaped yam 'Show-Feng', and planting no later than middle May. The yield would reduced sharply if planted lately in June. The unstable yield, planted in March, was found due to climate.

並列關鍵字

Yam ； Dioscorea batatas ； Planting date ； Tuber ； Dormancy ； Sprouting