Abstract：Fishery-PV Integration” is an innovative production model that combines photovoltaic power generation and pond aquaculture. Compared with the conventional pond culture model, it has the advantages of high land utilization rate, high income, energy conservation and environmental protection, etc.. However, whether photovoltaic modules affects the breeding environment was one of the main issues that plague the further promotion and application of this technology. In this paper, the impact of different shading rates (0%, 50% and 75%) on pond water quality and grass carp growth performance was studied, through comparing the pH, temperature, dissolved oxygen, inorganic nitrogen, active phosphorus, hardness and alkalinity; phytoplankton richness and photosynthetic pigment content; the feed conversion rate, daily weight gain rate and unit yield of grass carp. The results showed that, in the 50% and 75% shading groups, pH and water temperature decreased, alkalinity, hardness and nitrogen to phosphorus ratio increased, and the biomass of cyanobacteria and zooplankton decreased, and there was no significant difference in the growth and yield of grass carp in the 50% and 75% shading groups compared with the control group. The study showed that “Fishery-PV Integration” shading had no significant adverse effect on the growth of grass carp. On the contrary, suitable “Fishery-PV Integration” shading could improve the pond water quality, and thus beneficial to the pond cultivation of grass carps.
