碱茅改良黄河滩区盐渍化土壤的效果

Studies on Effect of Alkaligrass(Puccinellia chinampoensis Ohwi) in Recovery of Saline Soil of Yellow River Beach

[目的]探索通过种植牧草来生物改良当地盐渍化土壤的新途径。[方法]通过在河南省黄河滩区引种碱茅,研究碱茅改良滩区盐渍化土壤的可能性和必要性。[结果]种植碱茅能够明显改善盐渍化土壤的结构,降低土壤表层盐分含量,提高土壤的保肥和供肥能力,改善理化性质,促进后茬牧草的生长与优质高产。[结论]在盐渍化土地上种植碱茅,是一种成本低、效果好的土壤改良措施,可以在滩区大力推广和应用,以解决当地可利用土地不足的问题。

[Objective] New way to rehabilitate saline soil biologically by introduction of pasture was studied. [Method] The possibilities and necessities of alkaligrass were studied to improve saline soil of beach by introduction of alkaligrass into yellow river beach of Henan province, [Result] The plantation of alkaligrass had significant effect on the improvement of soil texture and characters, depletion of salinity of surface layer soil and increase in fertilizers＇ holding and providing capacities. The plantation of alkaligrass also could promote growth of forage plants planted after alkaligrass. [ Conclusion] Planting alkaligrass in saline soil was one of loss cost and better effect way to recover barren soil. This effective biological recovery method could be extended and applied in the whole beach in order to solve severe shortage of local arable land.