宁夏引黄灌区有春旱、多风、少雨,蒸发量大、土壤失墒快的气候特点,加之历年黄河开灌较迟,不能完全符合当时小麦生长发育的需要.对产量有一定影响。为了摸索小麦头水早迟对产量的影响,今年我们在丰产栽培试验中,着重对早灌头水进行了认真的试验研究,现将结果初报于后。 Ningxia Yellow River irrigated areas have spring drought, windy, dry, evaporation, soil loss of moisture fast climate characteristics, combined with the late opening of the Yellow River irrigation late, can not be fully in line with the needs of the wheat growth and development, have a certain impact on the yield. In order to explore the impact of early wheat headwater on the yield, this year we in high yield cultivation experiments, focusing on the early irrigation of head water conducted a serious experimental study, the results are reported later.