硅酸盐是自养生物(特别是硅藻)所必需的营养物质,又是水团划分的重要指标之一,对其研究具有普遍的海洋学意义。为此,本文根据1959年调查资料,对渤海硅酸盐的含量变化与盐度及浮游植物的关系进行了讨论。结果指出,除个别月份外,该水域(特别是河口沿岸区)硅酸盐与盐度量值大致呈相反分布趋势;浮游植物对硅含量有一定影响,但硅酸盐不是自养生物的限制因素。 Silicate is an essential nutrient for autotrophs (especially diatoms) and one of the most important indicators for water mass division. Its research has universal oceanographic significance. Therefore, based on the 1959 survey data, the paper discusses the relationship between the change of silicate content in the Bohai Sea and the salinity and phytoplankton. The results show that, except for a few months, the silicate and salinity values ​​of the waters (especially estuarine and coastal areas) are roughly oppositely distributed; phytoplankton has some influence on the silicon content, but silicate is not a limiting factor for autotrophs .