切根和添加菌肥对羊草群落的影响

Influences of Cutting Roots and Adding Bacterial Fertilizer Manure on the Leymus chinensis Community

对呼伦贝尔草甸草原羊草群落中度退化围封的草地进行切根加添加菌肥改良研究。结果表明,切根加施菌肥显著增加了羊草群落物种丰富度指数、多样性指数和优势度指数,降低了均匀度指数。改良区地上现存量显著高于对照区现存量,切根施肥改良后草甸草原羊草种群相对生物量无显著变化。

Research on the improvement of cutting root and adding bacterial fertilizer in the moderate degradation grassland of Leymus chinensis community in hulunbeir grassland was determined. The results showed that L. chinensis community species richness index,diversity index and dominance indexwere significantly increased, and the evenness index was decreased. The floor standing crop in the improvement area was significantly higher than the control.The relative biomass of L. chinensis community species was not change significantly after cutting roots and fertilization.