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Position: Home > Articles > Study on the secondary salinization of soil in protected vegetable cultivation in Fengxian area of Shanghai Acta Agriculturae Shanghai 2014,30 (2) 100-103

上海市奉贤区设施菜地土壤盐渍化研究

作  者:
朱萍;顾艾节;周士良;夏伟;李栋;徐英
单  位:
上海市奉贤区农业技术推广中心
关键词:
菜地;温室栽培;次生盐化;土壤盐渍度
摘  要:
研究了奉贤地区不同种植年限及不同剖面深度的设施菜地土壤盐分动态特征。结果表明:因化肥使用过量或不当,设施菜地在建棚第二年即出现盐渍化;土壤水溶性盐离子组成从建棚初期以HCO_3~-为主转变为以NO_3~-为主,且土壤含盐量与NO_3~-、SO_4~(2-)、Ca~(2+)、Mg~(2+)呈极高的正相关;土壤含盐量在垂直剖面上呈表聚性,土壤含盐量在0~10 cm土层变异较大、20~60 cm土层变异趋小,说明土壤次生盐渍化形成过程与耕作施肥等人为控制因素密切相关。
译  名:
Study on the secondary salinization of soil in protected vegetable cultivation in Fengxian area of Shanghai
作  者:
ZHU Ping;GU Ai-jie;ZHOU Shi-liang;XIA Wei;LI Dong;XU Ying;Fengxian District Agro-Technology Extension Center;
关键词:
Vegetable field;;Greenhouse culture;;Secondary salinization;;Soil salinity
摘  要:
The soil salinity variations in protected vegetable cultivation for different years were investigated in Fengxian area.The results showed that excessive or improper application of chemical fertilizer could cause the secondary salinization of soil in the second year of greenhouse culture;The composition of soil water-soluble salt was mainly HCO_3~- at the initial stage and NO_3~- at the later stage,and there were significant positive correlations of soil salt content to NO_3~-,SO_4~(2-),Ca~(2+) and Mg~(2+);The saltwas accumulated largely in surface soil,and the salt content variation was larger in the soil 0-10 cm deep and less in the soil 20- 60 cm deep.From the above results it was concluded that the secondary salinization of soil was closely related to artificial fertilization and cultivation.

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