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“永续性多年生混播草地”是针对黄土高原半干旱丘陵区的特点,经过长期观察和论证后,提出的一项新的优化生态探索模式.它选择了3～5种多年生豆科、禾本科草种混播,并加入半灌木、灌木(树)草种,使组合内部的互补性有所增强。在治理全过程中(前、中、后期)合理运用上繁草、下繁草和中间型草种,林草有机地相互配置。使利用年限从3～5年延续到7～10年以上。这个模式既兼顾了种草养畜、能源薪炭、水土保持和恢复生态的多种效益,也注意了草种组合对混播草地植被成分演变的影响,用循续渐进增补更新草种的办法改变荒山荒地面貌。
The sustainable perennial mixed grassland is a new optimized ecological exploration mode proposed after long-term observation and demonstration for the semi-arid hilly area in the Loess Plateau. It selects 3 to 5 perennial legumes, Grass mixed planting, and joined the semi-shrubs, shrubs (trees) grass species, so that the internal complementarity of the portfolio has been enhanced. In the whole process of governance (before, during and after) the rational use of the upper and lower grass and grass under the grass, grass and grass organic mutual configuration. The use of life extended from 3 to 5 years to 7 to 10 years. This model not only takes into account the various benefits of planting grass and livestock, energy-based fuel, water and soil conservation and ecological restoration, but also noting the effect of grass-planting combination on the evolution of vegetation components of mixed-sown grasslands, and changing barren hills with incremental and gradual updating of grass species Badlands look.