Optimizing Nitrogen and Phosphorus Fertilizer Application for Wheat Yield on Alkali Soils: Mechanisms and Effects

文献类型： 外文期刊

第一作者： Hou, Peng

作者： Hou, Peng;Hou, Peng;Li, Bowen;Cao, Enkai;Liu, Zhaohui;Li, Yan;Sun, Zeqiang;Ma, Changjian;Li, Bowen;Cao, Enkai;Ma, Changjian;Xiao, Yang;Ma, Changjian

作者机构：

关键词： grain yield; thousand-grain weight; nutrient uptake; wheat macronutrient status

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2025 年 15 卷 3 期

页码：

收录情况： SCI

摘要： Enhancing crop productivity on alkali soils is essential for food security; however, excessive fertilizer use can lead to soil salinization. Wheat, as a key staple crop, requires an appropriate nitrogen-to-phosphorus fertilization ratio to optimize its yield, yet the ideal ratio remains unclear. In this study, alongside the application of potassium and organic fertilizers, we investigated varying nitrogen application rates (100 kg/ha, 180 kg/ha) and phosphorus application rates (40 kg/ha, 80 kg/ha, 120 kg/ha). The results revealed that, under consistent nitrogen application conditions, when phosphorus application increased from 40 kg/ha to 80 kg/ha and 120 kg/ha, average yield increased by 13.6-25.1% and 0.1-12.6%, respectively. In contrast, under the same phosphorus application conditions, increasing nitrogen application from 100 kg/ha to 180 kg/ha resulted in a 2.6-17.6% increase in average yield. Among the factors considered, biomass emerged as the most significant determinant of yield (Standardized Path Coefficient (SPC) = 0.84), with key influences on biomass including soil alkali-hydrolyzable nitrogen, phosphorus uptake, and potassium uptake. The optimal fertilization strategy for wheat production on alkali soils was found to be 180 kg/ha of nitrogen and 80 kg/ha of phosphorus. These findings provide a theoretical foundation for optimizing fertilizer management in wheat cultivation on alkali soils.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序