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中文摘要：
试验于2009-2012年,在河西走廊地区对不同行距条件下牧草型高羊茅（Festuca arundinacea）种子产量和产量因子进行分析研究.结果表明：行距对种子产量有显著影响且随行距增大种子产量呈下降趋势,2011年30cm行距种子产量最高,为1225 kg·hm-2.不同年限间种子产量差异显著,播种后第3年种子产量最高.行距和年限均是通过影响单位面积分蘖、单位面积营养枝数和单位面积生殖枝数,进而影响种子产量.小穗数/生殖枝、小花数/小穗、种子数/小穗和千粒重主要随年际变化,受行距影响较小.
英文摘要：
In this study, tall rescue （Festuca arundinacea） seed yield and seed yield components were meas ured and analyzed under the climate of the Hexi Corridor with different row spaces from 2009--2012. Re suits indicated that tall rescue seed yields were influenced significantly by row spaces and years, and de creased with row space increased. Seed yields had significant difference between different years. And the highest seed yield occurred in the third year after sowing. The highest seed yields of 1225 kg · hm 2 were obtained with 30 cm row space in 2011. Seed yields were correlated closely to tillers, vegetative tillers and fertile tillers which were influenced by row space and weather condition. Spikelet/fertile tiller, floret/ spikelet, seeds/spikelet ratios and thousand seed weight were influenced significantly by year, while not affected by row space.
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