碱茅草对河西盐渍化土壤理化性质的影响  

EFFECT OF PUCCINELLIA CHINAMPOENSIS ON THE PHYSICAL AND CHEMICAL CHARACTER OF THE SALINE SOIL IN HEXI, GANSU PROVINCE

作　　者：阎顺国 郭树林[1] 朱兴运[1] 

机构地区：[1]甘肃草原生态研究所

出　　处：《草业科学》1990年第3期26-29,共4页Pratacultural Science

基　　金：国家自资科学基金会资助

摘　　要：本文研究了碱茅草对河西盐渍土壤理化性质的影响。结果表明,种植碱茅草2—4年后,土壤结构,渗透性能,孔隙度及容重都有明显的变化,有机质略有降低,pH无明显的变化。3—4年生碱茅草地一般形成草结皮,结构恶化及肥力降低是碱茅草产量下降的主要原因之一。The effect of Puccinellia chinampoensis on the physical and chemical character of saline soil in Hexi, Gansu province was studied, The results showed that thd structure, filtration ability, porosity and volume weight of the saline soil changed, after growing alkaline grass for 2～4 years the organic matter of the soil droped slightly. 3～4 year-old alkaline grass ley formed by which bad structure and low soil fertility occured was regarded as a major reason which resulted in low grass yield.

关 键 词：碱茅草 土壤 盐渍化 理化性质 

分 类 号：S543.901[农业科学—作物学]