Device with adjustable local light intensity for researching algae phototaxis rules

The invention discloses a device with adjustable local light intensity for researching algae phototaxis rules, and particularly relates to the technical field of algae phototaxis. The device comprisesa base and a channel; a groove is formed in the bottom of an inner cavity of the base, a modulator is arranged at the bottom of the inner cavity of the groove, and an LED light source is fixedly connected to the top of the modulator; developing white paper is placed at the bottom of the inner cavity of the base; the channel is placed in the top of the developing white paper; a sealing ring is fixedly connected to the outer wall of the top of the channel; a cover piece is attached into the sealing ring; the bottom of the cover piece is attached to the top of the channel; fixing blocks are fixedly connected to the two sides of the inner cavity of the base; and sliding sleeves are embedded into the tops of the fixing blocks. According to the device, the aggregation condition of algae is measured and calculated by us