【摘要】 在宁夏南部山区弃耕梯田建植禾本科和菊科混播草地，研究2个混播组合无芒雀麦+鸭茅+菊苣和无芒雀麦+苇状羊茅+菊苣，与3个不同播量3.0、4.5、6.0 kg·667^-1·m^-2对建植年草地生产性能的影响。结果表明：混播组合是影响草地生产力的主因素，无芒雀麦+苇状羊茅+菊苣组合在3个播量下均具有混播优势，每茬次生物量均极显著高于无芒雀麦+鸭茅+菊苣组合；播量通过第2、3茬的生物量影响总生物量，播量4.5 kg·667^-1·m^-2的总生物量最极显著高于其他播量处理。混播组合和播量均可以显著影响生产力稳定性，无芒雀麦+苇状羊茅+菊苣组合的生产力稳定性极显著高于无芒雀麦+鸭茅+菊苣组合，播量4.5 kg·667^-1·m^-2的生产力稳定性最高。更多还原

【Abstract】 To study the effects of two mixed sowing combinations of Bromus inermis + Dactylis glomerata +Cichorium intybus and Bromus inermis + Festuca arundinacea + Cichorium intybus, and three different sowing rates of 3.0 kg·667^-1·m^-2, 4.5 kg·667^-1·m^-2 and 6.0 kg·667^-1·m^-2 on the grassland performance in the established year, two mixed sowing combinations of gramineae and compositae were established in abandoned terraces in the Mountainous Area of Southern Ningxia. The results showed that the mixed sowing combination was the main factor affecting the grassland productivity. The mixed sowing combination of Bromus inermis +Festuca arundinacea + Cichorium intybus had the advantage under the three sowing rates, and the biomass per crop was significantly higher than that of Bromus inermis + Dactylis glomerata + Cichorium intybus. The seeding rate affected the total biomass through the biomass of the second and third stubble, and the total biomass of 4.5 kg·667^-1·m^-2 was significantly higher than that of other sowing rate treatments. Both the mixed sowing combination and sowing rate had significant effects on the productivity stability. The productivity stability of Bromus inermis + Festuca arundinacea + Cichorium intybus was significantly higher than that of Bromus inermis + Dactylis glomerata + Cichorium intybus, and the productivity stability of 4.5 kg·667^-1·m^-2 sowing rate was the highest.更多还原