Effects of water application uniformity using a center pivot on winter wheat yield, water and nitrogen use efficiency in the North China Plain
| Autor: | Lian-hao Li, Hai-jun Yan, Dong-yu Cai |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Fertigation Field experiment Agriculture (General) Winter wheat Growing season chemistry.chemical_element low pressure sprinkler Plant Science 01 natural sciences Biochemistry S1-972 Food Animals Water-use efficiency water application uniformity Ecology center pivot 04 agricultural and veterinary sciences water and nitrogen use efficiency Nitrogen Impact sprinkler winter wheat Center pivot irrigation Agronomy chemistry 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Animal Science and Zoology Agronomy and Crop Science 010606 plant biology & botany Food Science |
| Zdroj: | Journal of Integrative Agriculture, Vol 19, Iss 9, Pp 2326-2339 (2020) |
| ISSN: | 2095-3119 |
| Popis: | In recent years, the use of fertigation technology with center pivot irrigation systems has increased rapidly in the North China Plain (NCP). The combined effects of water and nitrogen application uniformity on the grain yield, water use efficiency (WUE) and nitrogen use efficiency (NUE) have become a research hotspot. In this study, a two-year field experiment was conducted during the winter wheat growing season in 2016–2018 to evaluate the water application uniformity of a center pivot with two low pressure sprinklers (the R3000 sprinklers were installed in the first span, the corresponding treatment was RS; the D3000 sprinklers were installed in the second span, the corresponding treatment was DS) and a P85A impact sprinkler as the end gun (the corresponding treatment was EG), and to analyze its effects on grain yield, WUE and NUE. The results showed that the water application uniformity coefficients of R3000, D3000 and P85A along the radial direction of the pivot (CUH) were 87.5, 79.5 and 65%, respectively. While the uniformity coefficients along the traveling direction of the pivot (CUC) were all higher than 85%. The effects of water application uniformity of the R3000 and D3000 sprinklers on grain yield were not significant (P>0.05); however, the average grain yield of EG was significantly lower (P |
| Databáze: | OpenAIRE |
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