OPTIMIZATION OF IRRIGATION RICE TECHNOLOGY

Optimization of rice irrigation in the current environment is the establishment of rational values of filtration outflowand and water release. Determining the optimal size of the filtration outflow in rice fields is possible on the basis of dependency rice yields from the filtration outflow and irrigation norm constructed from field studies. Research set to optimal values of net irrigation norm flooded rice, filtration outflow and yields: 1. the net irrigation norm ? 19-20 thous. m3 / ha; 2. filtration outflow ? 7-8 thous. m3 / ha; 3. the yield of rice ? 50-51 cwt / ha. Optimal soil moisture for rice, which requires little water ? 0.8 HB, irrigation norm ? 10-11 thous. m3 / ha, yield ? 40-41 cwt / ha, the depth of groundwater ? 2m.