苏打盐碱土改良及生态环境修复效果评价

Improvement of Soda Alkali-saline Soil and Effect Evaluation of Ecological Environment Restoration

针对黑龙江省西部松嫩平原草原盐碱化日趋严重、草原综合生产能力逐年下降等亟待解决的问题,就利用振动深松技术与生化土壤改良剂有机集成,对苏打盐碱土改良进行了研究。通过小区试验结果分析和大面积中试验证表明,集成技术的运用使苏打盐碱土的物理化学指标趋于良性化,牧草生长的土壤环境得到改善,牧草增产效果十分明显,提高了治理和综合开发盐碱化草原的水平。采用基于RAGA的PPC模型将该集成技术与对照区、围栏封育、浅翻轻耙等方法进行比较分析,进一步证明了集成技术治理盐碱化草原的有效性。

Grassland saline-alkalized of Songnen Plain was aggravating in the west of Heilongjiang Province, and general throughput of grassland was descending year after year. Aiming at a series of problems above that should be urgently solved, it is studied using deeply vibrating-loosening technology and improvement preparation of biological chemistry, and evaluating application effect of integrative technology on improvement of soda alkali-saline soil. The result analysis of small plot experiment and large-scale planting tests showsthat physical and chemical index of soda alkali-saline soil is geting better, soil environment of grass growth is improved, the output is increased, and the level of control and comprehensive development grassland saline-alkalized is increased. Through PPC model based on RAGA, compared with check plot of undisturbed soil, enclosure on alpine steppes, shallow plowing and light harrow etc, it is further proved that the integrated technique is effective to improve saline-alkalized grassland.