摘要
本试验通过设1∶2、1∶3、1∶4三个水平的豆禾混播比例,研究不同混播比例对牧草返青日期、植被盖度、高度、群落物种数、牧草产量等的影响,以期确定本地区天然退化草原修复的最佳豆禾混播比例.结果表明,豆禾比1∶2混播组合是提高产量的最佳组合,从提高植被盖度及有利于恢复退化草原的角度考虑,豆禾比1∶4组合为最佳混播组合.
Abstract
This experiment was conducted by setting three levels of Legumes-Grasses Mixture ratios:1∶2,1∶3,and 1∶4,studied the effect of different mixing ratios on turning green date,coverage,height,number of community species,and yield,in order to determine the best mixed planting ratio of legume-grass mixtures for the restoration of natural degraded grassland in this area.The results indicated that the 1∶2 legume-grass mix-ture was the best combination for increasing yield,and considering the improvement of vegetation coverage and the facilitation of restoration of degraded grasslands,the 1∶4 mixture was the optimal sowing combination.
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