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利用田间试验研究了不同喷灌均匀系数条件下的冬小麦耗水规律及喷灌蒸发漂移损失。试验设置低、中、高喷灌均匀系数处理 ,喷灌均匀系数的变化范围为 6 2 %～ 82 %。试验结果表明 ,在北京地区冬小麦生育期内 ,喷洒水利用系数的变化范围为 0 .6 4～ 0 .86 ,利用系数随喷灌均匀系数的增大而增大 ,随风速的增大而降低。低均匀系数处理的冬小麦耗水量高于高均匀系数处理。试验结果还表明 ,在所研究的喷灌均匀系数范围内 ,均匀系数对产量的影响不明显。
Field experiments were conducted to study the water consumption of winter wheat and the loss of sprinkler irrigation and evaporation under different irrigation uniformity coefficients. The experimental set low, medium and high sprinkler uniform coefficient of treatment, Sprinkler uniformity coefficient ranged from 62% to 82%. The results showed that during the growth period of winter wheat in Beijing, the coefficient of utilization of spraying water ranged from 0.664 to 0.86. The utilization coefficient increased with the increase of sprinkling irrigation uniformity coefficient and decreased with the increase of wind speed . The water consumption of winter wheat with low uniform coefficient was higher than that of high uniform coefficient. The experimental results also show that the uniform coefficient has no obvious effect on the yield within the range of uniform coefficient of sprinkler irrigation.