Abstract
The possibility to use drip irrigation systems to cultivate rice with periodic irrigation based on the results of the researches carried out in 2013–2015 is shown. The test was conducted on the crops of aerobic rice of the Volgogradskii variety according to the two-factorial scheme, including three variants of the soil water mode with the constant and differentiated preirrigation threshold and soil moistening layer and three variants of macrofertilizer rates calculated for collecting 5, 6, and 7 t of grain from 1 ha. On average for the years of experiments, the rice yield depending on the studied factor changed from 5.13 to 6.87 t/ha at the irrigation rate 4440–6060 m3/ha. To obtain 5 t/ha, 6 t/ha, and 7 t/ha, the irrigation water consumption totaled 1013—959 m3/t, 860–805 m3/t, and 771–716 m3/t. The profitability of rice production according to such technology achieved 57.3–116.5% depending on the yield.
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