栽培密度對硬質玉米生育與產量之影響

Effects of Panting Density on the Growth and Yield of Maize (Zea mays L.)

游之穎(Chih-Ying Yu) ； 余德發(Der-Fa Yu) ； 詹庭筑(Ting-Zhu Zhan)

《花蓮區農業改良場研究彙報》 33期 (2015/12) Pp. 23-32

摘要

本試驗探討栽培密度對東部地區種植硬質玉米‘明豐3號’植株生育與產量之影響。試驗處理係採五種栽培行株距，分別為D1 (75 cm × 25 cm)、D2 (75 cm × 15 cm)、D3 (60 cm × 15 cm)、D4 (45 cm × 15cm)與D5 (30 cm × 15 cm)，分別相當於每公頃53,333株、88,888株、111,111株、148,148株與222,222株。試驗期間為2014年1月8日至2014 年6 月13 日，試驗結果各處理子實產量平均依序為4,784、4,861、3,942、3,702及2,473 kg/ha。結果顯示硬質玉米‘明豐3號’栽培行株距以75 cm × 15 cm和75 cm × 25 cm可獲得較高的產量。最小行株距30 cm × 15 cm的處理，植株密度過高，植株生育不良，煤紋病情形嚴重，不結實與不正常穗多，產量顯著降低。

關鍵字

明豐3號 ； 行株距 ； 窄行距 ； 密植

並列摘要

This experiment was conducted to study the effects of planting density on growth and yield of the maize variety 'Ming-Fung No. 3' in east Taiwan. Five different plant densities (75 × 25, 75 × 15, 60 × 15, 45 × 15, 30 × 15 cm or 53,333, 88,888, 111,111, 148,148, 222,222 plants/ per ha, respectively) were evaluated. The gain yields were 4,784, 4,861, 3,942, 3,702 and 2,473 kg/ha in sequence. The results show that the planting density at 75 × 15cm (88,888 plants/ha) and 75 × 25cm (53,333 plants/ha) resulted in higher yield for the maize variety 'Ming-Fung No. 3'. On the contrary, the yield declined significantly in the spacing 30 × 15cm (222,222 plants/ha) treatment. The high-density planting also resulted in poor plant growth, severe northern leaf blight disease, and abnormal corn ears.

並列關鍵字

'Ming-Fung No. 3' ； row spacing ； narrow-row ； high-density