【摘要】 设置行株距为 6 0cm× 4 3cm、6 0cm× 2 0cm、6 0cm× 13cm、6 0cm× 10cm 4个不同种植密度对闽牧 4 2影响试验的结果表明 :不同种植密度可显著影响种植当年的牧草产量 (P <0 .0 5) ,但对种植翌年牧草产量的影响却不明显 (P >0 .0 5) ,综合分析表明 ,种植密度以 6 0cm× 2 0cm为宜 ,在这种密度下 ,既能达到较高的干草量 (平均 4 0 .6 7t/hm2 ) ,又可节约成本 ;种植密度可非常显著地影响种植当年的牧草分蘖数 (P <0 .0 1) ,且随种植密度的递增 ,牧草的分蘖数相应降低 ,第 3次刈割后 ,密度为6 0cm× 4 3cm的平均分蘖数达 2 4 .2个 ,6 0cm× 10cm的平均分蘖数只有 7.0个 ;种植密度对牧草营养成分 ,茎叶比、风干率和生长速度的影响不显著。更多还原

【Abstract】 Experiment was conducted to investigate the effects of four planting densities, 60 cm×43 cm, 60 cm×20 cm,60 cm×13 cm and 60 cm×10 cm, on performance of minmu 42. Different planting densities significantly affected the yield in the first (P<0.05), but the effect of planting densities on the yield was insignficant in the following year. According to analysis, optimum planting density was 60 cm×20 cm which brought high yield (40.67 t/hm2) and decreased the cost at the same time. Different planting densities also significantly affected the tilling number (P< 0.01), which decreased with the increase of planting density. After the third harvest, the average tilling number reached 24.2 at the density of 60 cm×43 cm, but only 7.0 at 60 cm×10 cm. Meanwhile, effects of planting densities on nutritional components, stem -leaf ratio (S/L), drying rate and growth rate were insignificant.更多还原