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本文通过统计分析洛阳地区近３０年的降雨量，模拟洛阳地区不同的降雨年型，利用防雨旱棚研究旱地农田不同Ｎ、Ｐ、水配合对小麦产量影响。研究结果表明：在底墒水充足的情况下，Ｎ素对小麦产量影响最大，其次为Ｐ和水；Ｎ和水的交互作用对产量的影响＞Ｎ和Ｐ＞Ｐ和水；Ｐ肥、水分固定在高值还是低值，Ｎ肥对产量的影响规律基本上一致，Ｎ肥的最佳用量为３３０ｋｇ／ｈｍ２左右；Ｎ肥、水分固定在高值还是低值，Ｐ肥适宜时（２２５ｋｇ／ｈｍ２左右）产量最高，而且Ｐ肥过多或过少都使产量下降。
Through statistical analysis of the rainfall in Luoyang area in recent 30 years, we simulated different annual rainfall types in Luoyang, and studied the effects of different N, P, The results showed that N had the most significant effect on the yield of wheat under the condition of adequate soil water supply, followed by P and water. The interaction of N and water had an effect on the yield> N and P> P and water; P fertilizer and water were fixed At high or low value, the effect of N fertilizer on yield is basically the same, the best dosage of N fertilizer is about 330kg / hm2; N fertilizer, water is fixed at high value or low value, P fertilizer is suitable (225kg / hm2 About) the highest yield, and too much or too little P fertilizer to reduce production.