التفاصيل البيبلوغرافية
| العنوان: |
Evaluating the Effects of Reduced N Application, a Nitrification Inhibitor, and Straw Incorporation on Fertilizer-N Fates in the Maize Growing Season: A Field 15N Tracer Study |
| المؤلفون: |
Zhi Quan, Shanlong Li, Zhifeng Xun, Chang Liu, Dong Liu, Yanzhi Wang, Xinghan Zhao, Ming Yang, Caiyan Lu, Xin Chen, Yunting Fang |
| المصدر: |
Nitrogen, Vol 5, Iss 3, Pp 584-597 (2024) |
| بيانات النشر: |
MDPI AG, 2024. |
| سنة النشر: |
2024 |
| المجموعة: |
LCC:Ecology |
| مصطلحات موضوعية: |
soil N turnover, straw application, NI, 15N labeling, 15N recovery, 15N retention, Ecology, QH540-549.5 |
| الوصف: |
Reducing fertilizer-N rate, applying a nitrification inhibitor (NI), and incorporating straw are widely recommended to improve N use efficiency of crops and decrease N losses. A field 15N tracer study was conducted to compare their effectiveness on fertilizer-N fates during the maize growing season in Northeast China. The following six treatments were used: (1) no N fertilization (control); (2) 200 kg urea-N ha−1 (100%N); (3) 200 kg urea-N ha−1 and straw (100%N + S); (4) 160 kg urea-N ha−1 (80%N); (5) 160 kg urea-N ha−1 and NI (Nitrapyrin in this study) (80%N + NI); and (6) 160 kg urea-N ha−1, NI, and straw (80%N + NI + S). The results showed that the five N fertilization treatments yielded 16–25% more grain and 39–60% more crop N uptake than the control, but the differences among the five treatments were not statistically significant. Compared with the 100%N, 20% fertilizer-N reduction (80%N) decreased the 15N concentration in topsoil and plant pools but increased the proportion of plant 15N recovery at harvesting (NUE15N, 60% vs. 50%). Compared with the 80%N, NI co-application (80%N + NI) delayed soil nitrification and increased soil 15N retention at harvesting (52% vs. 36%), thereby decreasing NUE15N significantly. Straw incorporation decreased fertilizer-N retention in soil compared with NI co-application because it promoted NUE15N significantly. In conclusion, the results demonstrate that NI and straw additions are efficient strategies for stabilizing fertilizer-N in soils and potentially minimizing N loss; however, their effects on NUE15N vary and the related mechanism must be further clarified in long-term trials. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2504-3129 |
| Relation: |
https://www.mdpi.com/2504-3129/5/3/39; https://doaj.org/toc/2504-3129 |
| DOI: |
10.3390/nitrogen5030039 |
| URL الوصول: |
https://doaj.org/article/5f0443ec0a2b4772a134b2e9bbfb644d |
| رقم الانضمام: |
edsdoj.5f0443ec0a2b4772a134b2e9bbfb644d |
| قاعدة البيانات: |
Directory of Open Access Journals |