Effects of Water and Nitrogen Regulation on Soil Environment and Crop Growth in a Lycium barbarum||Alfalfa System
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View abstract on PubMed
Summary
This summary is machine-generated.Optimizing water and nitrogen in arid agriculture boosts crop yield. Full irrigation and 300 kg/ha nitrogen significantly enhance Lycium barbarum||alfalfa systems, improving productivity and economic returns.
Area Of Science
- Agricultural Science
- Soil Science
- Agronomy
Background
- Arid regions face critical water and soil resource scarcity, exacerbated by inefficient agricultural management.
- Optimizing water and nitrogen is crucial for sustainable agriculture, enhancing crop productivity and quality in water-limited environments.
Purpose Of The Study
- To determine an optimal water and nitrogen regulation model for the Lycium barbarum||alfalfa intercropping system (LB||AS).
- To alleviate water shortages and improve agricultural productivity and quality in arid regions.
Main Methods
- A two-year field experiment investigating varying irrigation (four moisture gradients) and nitrogen levels (four urea application rates).
- Monitoring soil moisture, temperature, soil organic carbon (SOC), easily oxidizable organic carbon (EOC), and soluble organic carbon (DOC).
- Assessing crop growth parameters, Lycium barbarum yield, 100-fruit weight, and economic efficiency.
Main Results
- Soil moisture and temperature varied significantly with depth and treatments; higher temperatures observed in N0 and W3.
- Soil organic carbon (SOC) increased under specific water and nitrogen combinations (W3N0, W2N1).
- Optimal water-nitrogen management (W0N2) significantly boosted Lycium barbarum yield (3238 kg·ha⁻¹), outperforming other treatments.
Conclusions
- The optimal water-nitrogen regulation model for LB||AS is full irrigation (75-85% soil moisture) with 300 kg·ha⁻¹ nitrogen.
- This model significantly enhances Lycium barbarum yield, fruit weight, and economic efficiency.
- Findings provide critical insights for sustainable water and nitrogen management in arid agricultural systems.
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