通过浮游植物的增殖态势与理化因子的友关联比较，以空间理论数学为基础，按规范性、偶对称性、整体性、接近性和光滑离散函数等原则，并定义灰导数和灰微分方程，由此建立灰色动态模型，研究大鹏湾浮游植物增殖与海水环境要素间的关系结果表明，浮游动物、Ｆｅ、Ｍｎ和溶解氧对浮游植物增殖密度有比较重要的影响． Through the phylogenetic comparison between phytoplankton and physical and chemical factors, based on the theory of space theory, the principles of normative, even symmetry, integrality, closeness and smooth discrete function are defined and the gray derivatives and gray differential equations are defined. The gray dynamic model was established to study the relationship between phytoplankton proliferation and marine environmental factors in Dapeng Bay. The results showed that zooplankton, Fe, Mn and dissolved oxygen had an important influence on the density of phytoplankton.