振动深松技术与生化制剂在苏打盐碱土改良中的应用

Applied research of vibrating deeply-loosening tillage technology and biochemical reagents combination for improving soda saline-alkali soil

振动深松与生化制剂的有机结合旨在探求一种改良苏打盐碱土壤、快速修复草原生态环境的新方法。该文根据田间观测及室内试验,获得了盐碱土改良前后土壤物理化学指标的变化趋势。采用土壤水分特征指标法,定量了振动深松后深松层的土壤蓄水容量。利用方差分析方法分析了改良区增产效果。结果表明,集成技术对苏打盐碱土的改土、增产效果十分明显。其结论是采用振动深松技术改善了牧草生长的土壤环境,提高了降水有效利用率;与生化制剂的结合运用,降低盐碱对牧草根系的毒害,土壤中全氮、全磷和有机质等含量明显增加,提高了土壤肥力;经治理后的3～4a,改良区变为优质草场。

The integral technology of combining the mechanized vibrating deeply-loosening tillage with biochemical reagents is for studying the new methods to improve soda saline - alkali soil and rapidly restore the grassland biological environment. Based on the land observations and laboratory tests the change trend of soil physical and chemical index before and after improvement the saline-alkali soil has been obtained in this paper. Using the method of soil moisture characteristic index, quantified the water volume of soil reservoir storage in deeply-loosening layer. With the square deviation method, the effect of increase herbage yield in the reclamation area has been analyzed. The results show that the effect of improvement the saline-alkali soil and increase herbage yield are fully obvious by using the integral technology. The conclusion in this paper is that using the technology of mechanized deeply-loosening vibration tillage can improve the soil conditions for forage grass growth and raise the effective utilization ratio of precipitation, and put biochemical reagents can reduce soil salinity in grass root zone, so that the total nitrogen, the total phosphorus and organic contents obviously increased, and then increased the fertility of soil. In 3 to 4 years after improvement, the land in the reclamation area has become a high quality and productivity grassland.