不同時期修對枇杷開花之影響

Effect of Pruning Time on Improving Flowering of Loquat

邱禮弘(Li-Hung Chiu)

《臺中區農業改良場特刊》 38號 (1997/06) Pp. 121-124

https://doi.org/10.29563/ZHWHGX.199706.0002

摘要

本研究分別於民國84年5月8日（處理A）、5月25日（處理B），6月9日（處理C）及6月27日（處理D）等四個時期進行去頂留二側芽之修剪方式，並以一般傳統修剪管理（處理E）為對照、試驗結果顯示，其開花率分別為89.9%、95.6%、97.5%、87.2%及81.6%；但因A、B、C、D四處理留二芽為假性果痕枝，因而造成其開花比值增高，依序為1.435、1.778、1.775與1.596，而E處理則仍為0.816。因此由試驗得知5~6月之去頂修剪處理，能提高強壯生育枝之開花率，其開花比值約為一般管理的二倍，可有效提高產量。

關鍵字

枇杷 ； 修剪 ； 開花

並列摘要

Top-off pruning with two lateral buds left uncut was exercised on different dates, 8 May (treatment A), 25 May (treatment B), 9 June (treament C), 27 June (treatment D) in 1995, to compare its effect on the flowering of loquat. Conventional pruning (treatment E) was adopted as a control. It was demonstrated that the flowering rates for treatments A, B, C, D, and E, were 89.9%, 95.6%, 97.5%, 87.2%, and 81.6%, respectively. Since two lateral buds were left uncut in t tresatments A, B, C, and D, the relative values of flowering for those treaments were 1.435, 1.778, 1.775, and 1.596, respectively, which were higher than for treatment E, which was 0.86. Our study suggests that top-off pruning during May and June results in an increase in flowering rates of vigorously developmental branches and the relative values of flowering of the treated loquat plants can be promoted to be double thosee from conventional management. Accordingly, the yield of treated plants would be expected to be increase significantly.

並列關鍵字

loquat ； pruning ； flowering