The invention relates to the technical field of modern agricultural cultivation, and discloses a
water quality regulator for fish cultivation in rice fields. The prepared
water quality regulator can guarantee the maximum supply of nutrients in the
rice growth period by intervening the element content of rice field culture water in the
rice growth process, and improve the fish
culture environment,and a rice field-fish composite ecological
system is constructed, so that the yield and quality of aquatic products are improved, and the rice field water
eutrophication problem is solved. By means ofthe culture mode, the whole rice field
system has high self-purification capacity, benign growth and
reproduction of organisms in water are kept, the
water environment is stable, the water changing frequency is remarkably reduced, the cost is reduced, culture losses caused by
water quality pollution are avoided at the same time, mutual utilization of rice and aquatic metabolites is achieved, andthe
dynamic balance of a rice culture
system is realized; and the adverse effects of
eutrophication on
aquaculture are reduced, the cost investment can also be reduced, the fish culture benefit is improved, and the problems of low quality, poor benefit and large
pollution of the aquatic products cultured in the existing rice field are solved.