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为了研究氮肥深施在贵州省气候条件下对旱地氮素利用率的影响，采用不同深施方法在大方县、黔西县两地进行了两年的田间试验。研究结果表明：玉米氮肥深施比表施可提高氮素利用率６４％～２３９％，产量提高３２％～２１５％，施肥深度以近玉米根系１０ｃｍ土层效果最好。
In order to study the effect of nitrogen fertilizer application on the nitrogen use efficiency of dry land in Guizhou Province under different climatic conditions, two years of field experiments were carried out in Dafang County and Qianxi County by different methods. The results showed that the application rate of maize N application by deep application of N fertilizer increased nitrogen utilization efficiency by 64% ~ 239% and output by 32% ~ 215% .