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针对黑龙江省大庆市土壤盐碱化、草原退化、生态环境恶化日趋加重问题,利用振动深松技术对苏打盐碱土及草原进行改良。测定了改良前后土壤的物理化学指标、牧草产量及草原群落的变化,通过反映群落优势的物种多样性、丰富度、均匀度、盖度及频度等指标分析植被的变化趋势。结果表明,改良后的2～3年,土壤理化指标趋于良性变化,以人工种植羊草的群落成为优质群落,指明了振动深松技术改良苏打盐碱土的有效性及草原生态修复效果的显著性。
In view of the problem of soil salinization, grassland degradation and deterioration of ecological environment in Daqing City, Heilongjiang Province, the use of vibrating subsoiling technology to improve soda saline-alkali soil and grassland. The changes of physical and chemical indexes, forage yield and grassland community before and after the improvement were measured. The variation trend of vegetation was analyzed by species diversity, richness, evenness, coverage and frequency reflecting the community advantage. The results showed that the soil physical and chemical indicators tended to change benignly in the 2-3 years after the improvement. The artificial planting of Leymus chinensis community became a good community, indicating that the vibration subsidence technology was effective in improving soda-saline-alkali soil and the ecological restoration effect was significant Sex.