SELECTION FOR IRRIGATION RICE VARIETIES PERIODIC WATERING
The deficit of water in the world and in the Southern and North Caucasus Federal Districts of Russia limits the possibility of expanding the cultivation of this crop for the current technology. This raises the need for new water-saving irrigation technology of rice is not prolonged flooding, and conduct humidification irrigation. To do this, you must create a new tolerance to lack of water layer aerobic rice varieties. The results of many years of breeding work in the Institute of irrigated agriculture to create drought-tolerant rice varieties. In the process of selection has been created by individual selection of early maturing varieties of rice with long grain Volgogradskyi with a duration of 105-110 days of vegetation and yield potential of 6.0 t / ha of grain, which is well adapted to the absence of a layer of water and the use of irrigation soil moisture. In recent years, a hybrid combination of Volgograd's Boyar followed by individual selection of plants established middle-aerobic rice variety Stalingrad, suitable for cultivation in the water unsaturated soil. Its average 3-year yield under irrigation periodic irrigation was 8.401 / ha, which is higher than the standard Volgograd 2.8 t / ha. The new technology of cultivation of aerobic rice varieties in an unsaturated water the soil to the maintenance throughout the growing rice plants period of humidity not lower capillary disconnection allows to cultivate this culture in irrigation, general purpose engines and significantly reduce the cost of irrigation water, so that the technology removes a number of environmental problems associated with the cultivation of rice under irrigation by flooding.