紫花苜蓿对盐碱地的改良效果  

Preliminary Study on the Ameliorating Effect of Alfalfa to Saline-alkali Land

作　　者：郑普山[1] 郝保平[1] 冯悦晨[1] 李屹峰[2] 薛志强[2] 张延芳[3] 

机构地区：[1]山西省农业科学院农业资源与环境研究所,山西太原030006 [2]山西省农业科学院右玉试验站,山西右玉037200 [3]山西省农业科学院,山西太原030006

出　　处：《山西农业科学》2012年第11期1204-1206,共3页Journal of Shanxi Agricultural Sciences

基　　金：山西省农业科学院重点攻关项目(YZD0908);国家公益性行业(农业)科研专项(200803029-13-2)

摘　　要：利用建植5 a的紫花苜蓿草地,研究了人工草地对内陆盐碱地土壤盐分特性和肥力的影响。结果表明,与空白地相比,苜蓿人工草地0～40 cm土层的脱盐率分别达42.4%,盐分离子的降低幅度顺序为SO42->Na+>Cl->Ca2+>HCO3->CO32-,60～100 cm土层SO42-,Na+,Cl-,Ca2+,HCO3-和CO32-含量均大量积累,1 m土体K+和Mg2+含量相对稳定;0～40 cm土壤有机质含量提高了44.6%,全氮含量提高了53.1%。种植苜蓿是生物措施改良内陆盐碱地的有效途径之一。The effects of cultivated pasture to salinity and fertility properties of inland salinized soil were studied in a 5-year-old cultivated alfalfa pasture.The results showed that when compared to bare land,in cultivated alfalfa pasture the desalinization rate of the soil was 42.4% and the reductions of the ions followed the sequence of SO42-Na＋Cl-Ca2＋HCO3-CO32-at 0～40 cm depth;the contents of SO42-,Na＋,Cl-,Ca2＋,HCO3-and CO32-underwent considerable increased at 60～100 cm depth,and the contents of K＋ and Mg2＋ were relatively stable at 0～100 cm depth;organic matter at 0～40 cm depth was elevated by 44.6%,and total nitrogen by 53.1%.These data suggest that alfalfa cultivation was one of the effective measures to inland salinized amelioration by biological methods.

关 键 词：大同盆地 紫花苜蓿 盐碱地 改良效果 

分 类 号：S156.4[农业科学—土壤学] S541.1[农业科学—农业基础科学]