%0 Journal Article %T 不同年限温室土壤盐分变化及对土壤退化的影响 %T Soil Salinity Changes in Greenhouse with Years and Their Effects on Soil Degradation %A 张敬敏 %A 隋申利 %A 李艳玮 %A 魏 珉 %A 赵利华 %A ZHANG,Jingmin %A SUI,Shenli %A LI,Yanwei %A WEI,Min %A ZHAO,Lihua %J 土壤 %J Soils %@ 0253-9829 %V 51 %N 6 %D 2019 %P 1183-1187 %K 温室;土壤;年限;盐分;退化 %K Greenhouse; Soil; Years; Salinization; Degradation %X 为明确种植年限与土壤盐分及土壤退化间的关系,选择栽培模式和管理方式相近的温室,研究其土壤盐分、pH和交换性盐基离子随种植年限的变化趋势。结果表明:随种植年限的增加,土壤全盐量增加,第18年达1.833 g/kg;土壤K+和SO42-含量升高,Ca2+、Mg+ 和HCO3- 含量降低;土壤中Na+ 和Cl? 增量相对较少。土壤盐离子之和占全盐百分比在第6年平均为77.58%,而至第18年时为52.46%,说明随着种植年限延长,土壤盐离子组成已发生较大改变。土壤pH,第18年比第6年平均下降了1.01个单位,土壤交换性盐基下降了20.11%。因而,随温室种植年限延长,土壤盐渍化严重,酸化程度加重,交换能力下降,土壤肥力下降。 %X To understand the relationship between cropping years and soil salinity and degradation, the greenhouses with similar cultivation pattern and management but different years were selected, and variation of soil salinity, pH and exchangeable base were studied. The results showed that: with the increase of cropping years, soil total salt content increased, and reached to 1.833 g/kg in the 18th year; K+ and SO42-contents inceresed, Ca2+, Mg2+ and HCO3- contents decreased, while Na+ and Cl? contents slightly increased. Total salt ions percentage accounted for 77.58% in the 6th year and 52.46% in the 18th year of total salt content, indicating the composition of soil salt ions were changed. Soil pH decreased by 1.01 units and soil exchangeable base decreased by 20.11% in 18th year than the 6th year. It can be concluded that with the increase of cultivation year, soil salinization and acidification became more and more serious and ion-exchange capacity decreased in greenhouse, which caused the degradation of soil fertility. %R 10.13758/j.cnki.tr.2019.06.019 %U http://soils.issas.ac.cn/tr/home %1 JIS Version 3.0.0