摘要
通过测定华须芒草、斑叶芒、柳枝稷3种草本植物的地表及地表下20cm处根际土壤的酸碱度、有机质含量、盐分含量和速效钾含量,研究盐碱土壤上草本植物根际环境的变化。结果表明:种植草本植物后,与裸土相比,3种植物无论地表还是地表下20cm处,根际土壤的酸碱度、有机质含量和速效钾含量均有所下降;但根际土壤盐分含量仅种植斑叶芒下降,种植华须芒草和柳枝稷却有所上升。根际数据变化说明:3种草本植物均能较好地适应此盐碱土壤环境,且对盐碱土壤有一定的改良作用。
Three species of herbaceous plants--Andropogon chinensis, Miscanthus sinensis ＇Zebri- nus＇ and Panicum virgatum were grown on saline-alkali soil of the Haiwan Zone of Fengxian,Shang- hai,and their surface and 20-cm-deep rhizosphere soils were determined in terms of such indexes as pH,organic matter content,salt content and readily available potassium content so as to study the rhi- zosphere soil changes after growing the herbaceous plants on saline-alkali soil. The results showed that compared with the exposed soil,growing the herbaceous plants decreased the pH,organic matter con- tent and readily available potassium content of both surface and 20-cm-deep rhizosphere soils,but the salt content was increased by growing A. chinensis and P. virgatum and was decreased only by grow- ing M. sinensis. From the measured data it was concluded that the 3 species of plants could adapt well to growing on this saline-alkali soil and have a certain effect on improvement of saline-alkali soil.
出处
《上海农业学报》
CSCD
北大核心
2012年第3期66-69,共4页
Acta Agriculturae Shanghai
基金
上海市绿化管理局攻关课题(G102409)资助
关键词
草本植物
盐碱土壤
根围
土壤改良
Herbaceous plant
Saline-alkali soil
Rhizosphere
Soil improvement
