The field experiment was conducted to investigate the effects of applying urea with nitrification inhibitor (NI) (Nitrapyrine) alone or in combination with gibberellic acid (GA-K salt), on improving wheat yield and N-use efficiency at The University of Agriculture (34.1°ʹ21″ N, 71°28′5′E), Peshawar-Pakistan. There were five treatments with four replications: control (no urea), urea (150 kg N ha⁻¹), urea + nitrapyrin (525 g ha⁻¹), urea + GA-K salt (60 g ha⁻¹), and urea + nitrapyrin + GA-K salt, respectively. Wheat plant biomass, grain yield and total N uptake were enhanced by 31, 37 and 44%, respectively, when urea was applied together with nitrapyrin and GA-K salt over control. In addition, 1000 grains weight, grain spike⁻¹, and spike length were also significantly increased when urea was applied with both nitrapyrin + GA-K salt. In conclusion, use of urea with 525 g ha⁻¹ nitrapyrin or 60 g ha⁻¹ GA-K salt has the potential to enhance N-use efficiency and yield components of wheat yield.

在农业大学，进行了田间试验，以研究将尿素与硝化抑制剂（NI）（Nitrapyrine）单独或与赤霉素（GA-K盐）组合使用对提高小麦产量和氮利用效率的影响（ 34.1°ʹ21″ N，71°28′5′E），白沙瓦-巴基斯坦。一共有五种处理方法，一式四份：对照（无尿素），尿素（150 kg N ha ^-1），尿素+硝普林（525 g ha ^-1），尿素+ GA-K盐（60 g ha ^-1）和尿素+硝普钠+ GA-K盐。当尿素与硝普林和GA-K盐一起施用时，小麦植物的生物量，谷物产量和总氮吸收量分别增加了31％，37％和44％。另外，1000粒重，穗粒^-1尿素与硝普林+ GA-K盐同时使用时，穗长也显着增加。总之，尿素与525 g ha ^-1硝普林或60 g ha ^-1 GA-K盐的使用可能会提高氮的利用效率并提高小麦产量的构成要素。