## 5 Conclusions  
Our results depicted that the SWC, SOC, TN, and NH\({}_{4}\)\({}^{+}\)-N gradually decreased with increasing soil depth, and the NO\({}_{3}\)\({}^{-}\)-N content first increased and then decreased with increasing of soil depth, and TP had no change. Compared with the other treatments, NTNM treatment significantly increased SWC, SOC, TN, NH\({}_{4}\)\({}^{+}\)-N content, C/P, N/P, and crop yield; effectively reduced NO\({}_{3}\)\({}^{-}\)-N content in the soil; and significantly increased crop yield on the basis of reducing N loss. In addition, we also found that the SOC, TN, NH\({}_{4}\)\({}^{+}\)-N content, C/P, and N/P have a highly significant positive correlation with grain yield, and the NO\({}_{3}\)\({}^{-}\)-N content and C/N have a very significant negative correlation with yield. Additionally, the soil N/P in the study area is less than 14, indicating that crops are more limited by N, and subsequent crop planting should pay attention to nitrogen input in the key growth period. The NTNM practice can be used as an ideal farming practice and fertilizer ratio in local wheat production. In general, our study provides valuable information for scientific cultivation and crop production methods on farmland, which will help us to better understand the effects of tillage and N fertilization methods on soil nutrients accumulation and yield. **Author Contributions:** The research field has been managed by [PERSON], with ploughing, fertilizing, planting, weeding, and harvesting. [PERSON], [PERSON] and [PERSON] collected the field and laboratory data. [PERSON] analyzed data and wrote the article. [PERSON] edited the manuscript. [PERSON], [PERSON], [PERSON], [PERSON], [PERSON] and [PERSON], reviewed the article. All authors have read and agreed to the published version of the manuscript. **Funding:** This experimental study received outside financial support from the financial special project of Gansu province (GSCZZ-20160909), Key Talents Project of Gansu Province (LRYCZ-2020-1), Key Research and Development program of Gansu Province (20 YF8 NA135), and Industrial Support Plan project (2021 CYZC-15) of China. **Institutional Review Board Statement:** Not applicable. **Informed Consent Statement:** Not applicable. **Data Availability Statement:** Not applicable. **Acknowledgments:** We appreciatively acknowledge the plan of the Gansu Province key research and development (18 YF1 NA070) and the Collective innovation team project (2018C-16) of University in Gansu Province, China. We would also like to special thank [PERSON] at the University of Poonch Rawalakot, Pakistan for his technical assistance. We would also like to special thank the editors and the reviewers for their constructive and helpful comments. **Conflicts of Interest:** The authors declare no conflict of interest. This manuscript, entitled \"Tillage Strategy and Nitrogen Fertilization Methods Influences on Selected Soil Quality Indicators and Spring Wheat Yield under Semi-Arid Environmental Conditions of the Loess Plateau, China\", by [PERSON] et al. has no potential conflict of interest. * [PERSON] et al. (2010) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Long-term effect of chemical fertilizer, straw, and manure on soil chemical and biological properties in northwest China. _Geoderma_**2010**, _158_, 173-180. [CrossRef]
* [PERSON] et al. (2021) [PERSON]; [PERSON]; [PERSON]; [PERSON] Effect of conservation tillage on yield of spring wheat (_Triticum aestivum_ L.) and soil mineral nitrogen and carbon content. _Int. Astrophys._**2021**, _35_, 83-95. [CrossRef]
* [PERSON] et al. (2021) [PERSON]; [PERSON] [PERSON]; [PERSON] _Effect of Differences in Soil Tillage and Application of Organic Fertilizers on Soil Water Content and Yield of Upland Rice_; IOP Conference Series; Earth and Environmental Science; IOP Publishing: Bristol, UK, 2021; p. 012153. * [PERSON] et al.