Research on Water-saving Irrigation of Rice

Rice is the main grain which needs a large amount of water in Guizhou Province.To solve the engineering water shortage of farmland irrigation and realize the population balance and optimal allocation of water resource,the irrigation model of rice is summarized by the water-saving irrigation experiment,which would provide the basic data for compilation of rice irrigation quota and irrigation basis for agriculture production.The effects of different irrigation treatments on the agronomic characters,amount of irrigation water and water productivity of rice are analyzed.The results show that the scientific water-saving irrigation increase the precipitation utilization,reduce the artificial irrigation,which is suitable for popularizing in a large area.