CAJ | 학술논문

为了给河南地区夏玉米在水肥管理方面提供理论依据，以郑单958为实验材料，用田间试验方法研究了不同水肥条件下，玉米在各生育期内干物质与氮素的积累规律。结果表明：投入氮肥可以使干物质及氮素的积累量增加，但是增加不是没有限制的，当水分不足时，过多的氮肥反而会造成干物质及氮素积累量的下降，氮肥偏生产力及氮收获指数也符合这个规律。因此，肥料用量在配合适当水分的条件下，不仅能有效地促进氮素的吸收、累积，而且能够提高氮素在籽粒中的分配比例，从而有利于玉米高产的形成。
위료급하남지구하옥미재수비관리방면제공이론의거，이정단958위실험재료，용전간시험방법연구료불동수비조건하，옥미재각생육기내간물질여담소적적루규률。결과표명：투입담비가이사간물질급담소적적루량증가，단시증가불시몰유한제적，당수분불족시，과다적담비반이회조성간물질급담소적루량적하강，담비편생산력급담수획지수야부합저개규률。인차，비료용량재배합괄당수분적조건하，불부능유효지촉진담소적흡수、루적，이차능구제고담소재자립중적분배비례，종이유리우옥미고산적형성。
In order to provide theoretical basis for water and fertilizer management of summer maize in Henan Province,the effects of various combinations of water and fertilizer on accumulation and distribution of nitrogen and dry matter at different growth stages of maize (cv. Zhengdan 958) were studied by field experiments. The results showed that the accumulation of nitrogen and dry matter increased when water was plenty. However,excess nitrogen fertilizer caused decreasing in accumulation of nitrogen and dry matter,partial factor productivity of applied nitrogen,nitrogen harvest index under water stress. Therefore,proper combination of nitrogen fertilizer and water not only promoted absorption and accumulation of nitrogen nutrient,but also increased the distribution ratio of nitrogen nutrient in seeds and grain yield of summer maize.