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通过砂性漏水地春季追氮试验和对其产量结构的分析，认为在足肥和同样灌水情况下，春季追氮的时期和次数对小麦产量没有明显影响，在返青期或起身期可一次性追肥，不必多次追肥；在砂性漏水地，亩穗数为主攻因素，其次为千粒重，在措施上采取“攻前、保尾”的策略。
Through sand-leakage test and its analysis of yield structure in spring, it is concluded that in the condition of enough fertilizer and the same irrigation, the period and frequency of nitrogen recovery in spring have no obvious effect on the yield of wheat and may be one- Top dressing, do not have to top-dressing several times; sand leakage, acres of spikes as the main factor, followed by 1000 grain weight, to take measures to “attack before and after the tail” strategy.