Comparison of Efficiency-Enhanced Management and Conventional Management of Irrigation and Nitrogen Fertilization in Cotton Fields of Northwestern China
| Autor: | Zhenyong Zhao, Wang Ping, Changyan Tian, Lei Wang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Nitrogen balance
Irrigation Agriculture (General) chemistry.chemical_element Plant Science nitrogen balance cotton Nitrogen Irrigation water efficiency-enhanced management nitrogen irrigation S1-972 Crop Nitrogen fertilizer chemistry Agronomy Yield (wine) Environmental science WUE China Agronomy and Crop Science Food Science |
| Zdroj: | Agriculture, Vol 11, Iss 1134, p 1134 (2021) Agriculture Volume 11 Issue 11 |
| ISSN: | 2077-0472 |
| Popis: | Excessive application of nitrogen fertilizers and improper methods of irrigation under conventional management are common problems in the cotton fields of northwestern China. Efficiency-enhanced management, based on the water and nitrogen dynamics and crop requirements, has been used as a valuable strategy in different crops. The present study aimed to compare efficiency-enhanced management and conventional management of irrigation and nitrogen fertilization in the cotton fields at the Junggar Basin (Shihezi) and Tarim Basin (Cele) of northwestern China. Compared with conventional management, efficiency-enhanced management reduced the amount of N fertilizer by 41% in Cele and 44% in Shihezi, and the irrigation quantity by 35% in Cele and 24% in Shihezi. However, the cotton yield under efficiency-enhanced management was similar to that found under conventional management at both the experimental sites. The efficiency-enhanced management increased the water-use efficiency (WUE) and reduced the residual soil mineralizable N (Nmin) and apparent N losses. This study indicated that efficiency-enhanced management can significantly enhance the utilization efficiency of irrigation water and N fertilizers for cotton production in the fields of northwestern China. |
| Databáze: | OpenAIRE |
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