浙北砂性海涂土壤盐分运动定位观测研究

Orientation observation of salinity content movement in coastal saline soil in north Zhejiang Province

在上虞市海涂实验农场中心示范园区内选择有代表性的 6个点 ,用一周年时间 ,定位观测土壤盐分的动态变化状况。结果表明 ,一年中有三个时期海涂土壤 1m土体的含盐量较高 ;表层土壤盐分的波动较大 ,且这种波动与该地区一年中的降雨量和蒸发量的波动有关 ;海涂地的微地形对土壤 1m土体含盐量有明显影响 ,几厘米的高差就可导致土壤含盐量的明显差异 ,这说明土地平整是海涂土壤改良的一项重要措施。

A one year observation study of dynamic movement of soil salinity content was made in the central demonstration area of Shangyu Coastal Saline Experimental Farm,with six representative spots for observation.Results showed that soil salinity content was high in 1 m soil layer at three periods in a year.Soil salinity content fluctuated a lot in top (0-20 cm)layer and was related to rainfall and evaporation fluctuation. Tiny landform had evident influence on salinity content in 1 m layer. A centimeter step difference caused apparent change in soil salinity,which indicates that land leveling was a very important measure in management of coastal saline soils.