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Nitrogen Mitigates Salt Stress and Promotes Wheat Growth in the Yellow River Delta, China

Authors :
Yunpeng Sun
Xiaobing Chen
Jingjing Shan
Jingtian Xian
Dan Cao
Yongming Luo
Rongjiang Yao
Xin Zhang
Source :
Water, Vol 14, Iss 23, p 3819 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

Salt-affected soils is an important soil resource. Understanding fertilizer and salinity interaction are of great economic importance for improving crop yield and fertilizer use efficiency. A pot experiment was carried out to study the application of nitrogen (N) for ameliorating salt stress in wheat grown in the coastal saline soil of the Yellow River delta. Several controlling levels of salinity and nitrogen (0.7, 1.7, 2.7 g/kg, and 135, 270, and 405 kg/ha) were designed in a pot experiment in a stable water content state to investigate the N and salt interaction on soil properties and winter wheat growth characteristics. The results showed that the dry weight of winter wheat was promoted by salinity in the early growth stage (20 days), then it was gradually inhibited by nitrogen fertilizer. When winter wheat was grown by 54 days, the N and salinity had significant effects on the biomass of winter wheat. The nitrogen content of wheat shoot and root was mainly affected by N addition usage, and the largest value was obtained in 270 kg/ha N dosage treatments. The higher the salt content existed in the soil, the lower the growth rate shown in wheat cultivation. Under saline conditions, the N fertilizer application amount should be controlled to no more than 270 kg/ha, so that it could greatly promote wheat growth. Reasonable fertilizer usage could significantly contribute to crop yield and food quality of the saline agriculture in the Yellow River delta.

Details

Language :
English
ISSN :
14233819 and 20734441
Volume :
14
Issue :
23
Database :
Directory of Open Access Journals
Journal :
Water
Publication Type :
Academic Journal
Accession number :
edsdoj.730d2fa9964042cc9bf6585f87e42d05
Document Type :
article
Full Text :
https://doi.org/10.3390/w14233819