？石津灌区冬小麦种植肥料合理施用量试验研究

合理施肥是实现高产、稳产、低成本且环保的一个重要措施。选择在河北省石津灌区节水改造示范区，分别对氮、磷、钾三种肥料不同用量进行分析对比试验，探讨了肥料施用量与冬小麦产量的关系，结果发现：在其他条件相对稳定情况下，要保证冬小麦产量在6 750 kg/hm2以上，那么氮肥（折纯量）的合理施用量为210 kg/hm2，磷肥（P2O5）为45～75 kg/hm2，钾肥（K2O）为22.5～45kg/hm2。 Reasonable fertilization is an important measure to achieve the objectives of high and stable production, low cost, and environmental protection. In this paper, an experimental study was conducted to compare and analyze the application amounts of nitrogen, phosphate, and potash fertilizers in the demonstration area of water saving transformation of Shijin irrigation area in Hebei province, which was used to determine the relationship between the application amount of fertilizer and yield of winter wheat. The results suggested that in order to ensure the yield of winter wheat above 6750 kg/hm2, the reasonable application amount is 210 kg/hm2 for nitrogen fertilizer (net quantity), 45～75 kg/hm2 for phosphate fertilizer (P2O5),and 22.5～45kg/hm2 for potash fertilizer (K2O) when the other conditions are relatively stable. “十一五”国家科技支撑计划课题（课题编号：2006BAD11B09-2）