Abstract

To explore the ecological degradation of Suaeda Heteroptera in Panjin Red Beach wetland, the effects of Atrazine on the growth and physiological effects of Suaeda Heteroptera seedlings were studied by indoor hydroponics. Experimental results show that the leaves and roots of the Suaeda Heteroptera seedlings are very sensitive to Atrazine. And the LD50 of the number of leaves of Suaeda Heteroptera seedlings were 34.2 μg/L. At low concentrations (3.8-11.4 μg/L), Atrazine promoted the growth of seedling leaves; at higher concentrations (22.8-34.8 μg/L), it inhibited leavse growth and had a significant dose-effect relationship Atrazine had different effects on height and root length of Suaeda Heteroptera, but had no effect on seedlings stem length. The formation of chlorophyll b in leaves of Suaeda Heteroptera treated by Atrazine was inhibited. Also, the main factor for the decrease of total chlorophyll consent is Atrazine.

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