摘要
连续２年的测试研究表明，兰州市安宁区蔬菜保护土壤盐分浓度在１０～３０ｇ／ｋｇ之间，属于盐渍化土壤；土壤盐分在２个年度间差异不明显；０～２０ｃｍ表层盐分浓度达到１７８ｇ／ｋｇ，超过了土壤盐分浓度１５ｇ／ｋｇ的临界值，表层盐分浓度显著地高于２０～８０ｃｍ土体的平均值１４８ｇ／ｋｇ。盐分在土壤剖面中有表聚现象。
The results during two years show that the salt contents of vegetable planted soil under plastic shed range from 1.0 to 3.0 g/kg, which indicates the soil is salt affected. There is an unremarkably difference between two years in salt content of soil. 1.78 g/kg salt content in top soil exceeds the critical value of 1.5 g/kg significantly and goes beyond that of 1.48 g/kg in middle soil 20～80 cm, this means there is a surface cumulating of salts on profile.
出处
《甘肃农业大学学报》
CAS
CSCD
1998年第2期186-189,共4页
Journal of Gansu Agricultural University
基金
甘肃省自然科学基金
关键词
保护地
土壤盐分
剖面分布
soil under plastic shed
salt content
profile distribution
