数字农科院2.0

Optimal irrigation and nitrogen rate enhancing yield, quality, water productivity, and nitrogen use efficiency by promoting physiological growth in greenhouse tomato

文献类型： 外文期刊

作者： Li, Huanhuan;Gong, Xuewen;Han, Qisheng;Zhong, Yuan;Cui, Haixue;Qiang, Xiaoman;Zhang, Xianbo;Liu, Hao

作者机构：

关键词： Tomatoes;plant physiology growth;yield and quality;water productivity;nitrogen use efficiency

期刊名称： JOURNAL OF PLANT NUTRITION

ISSN： 0190-4167

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： The inappropriate irrigation and nitrogen application in greenhouse can cause resources waste and environmental pollution, but also inhibit crop growth, resulting in unstable or even reduced crop yield. A 2-year experiment was conducted to investigate the effects of irrigation and nitrogen on the physiology, growth, yield, total soluble solid(TSS), water productivity (WP), nitrogen use efficiency (NAE) of the soil-cultivated tomato in greenhouse. The irrigation was determined based on the cumulative evaporation (Epan) with its levels set as 0.5 (I1), 0.7 (I2), 0.9 (I3) times Epan, nitrogen rates were set as 0 (N0), 150 (N1), 300 (N2) and 450 (N3) kg ha-1. Results showed that regardless of nitrogen rates and years, compared with I1, I2 increased photosynthetic rate (Pn, 3.03%) and leaf area index (LAI, 7.30%), while only a marginal reduction in TSS (4.93%), enhanced root biomass (RB,3.77%), aboveground vegetative biomass (ANB,9.32%) and fruit biomass (FB,9.52%), culminating in 13.48% higher yield and 10.68% improvement in NAE. Regardless of irrigation levels and years, compared with N3, despite slight declined in Pn (2.81%) and TSS (3.67%), N2 significantly increased RB(15.12%), LAI(4.34%), ANB(1.17%), so yield, WP and NAE increased by 2.57%, 3.25%, and 45.04%, respectively. Moreover, the net income in N2I2 only decreased by 3.90% in 2018 and 14.79% in 2020. Therefore, N2I2 was identified as the most effective strategy, enhancing tomato physiological growth and maximizing yield and NAE with maintaining TSS and net income. This study highlights the critical role of irrigation and nitrogen management to enhance crop productivity and resource efficiency.HighlightsIncreasing irrigation promoted physiological growth, leading to high yield and nitrogen use efficiency.Moderate nitrogen rate (300 kg ha-1) was beneficial to physiological growth, ultimately increasing yield, water productivity and nitrogen use efficiency.The optimal irrigation and nitrogen management strategy was N2I2 (300 kg Nha-1 + 0.7 times the cumulative evaporation).

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