Nitrogen fertilization alters fruit yield and quality traits of Lycium barbarum in Northwest China
Nitrogen fertilization alters fruit yield and quality traits of Lycium barbarum in Northwest China
WANG Chenwen 1LIU Jianguo 1ZHUXinting 2ZHAO Zehe 2XU Jingjing 3TENG Baoqin3
作者信息
- 1. Key Laboratory of Resource Environment and Sustainable Development of Oasis, College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China;Engineering Research Center for Ecological and Environmental Damage Assessment of Gansu Province, Lanzhou 730070, China
- 2. Key Laboratory of Resource Environment and Sustainable Development of Oasis, College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China
- 3. Forestry Technique Extension Station of Gansu Province, Lanzhou 730046, China
- 折叠
摘要
Lycium barbarum L., valued for its potential immunomodulatory and metabolism-regulating functions, contains abundant bioactive compounds, including polysaccharides and betaine. The global demand for L. barbarum has grown rapidly at an annual rate exceeding 10.00%. Northwest China is the principal cultivation region. However, the highest urea application rate has induced soil acidification and nutrient imbalance, threatening the sustainability of this agricultural system. A three-year field experiment was conducted in the Wuwei oasis irrigation area to assess how different nitrogen (N) application rates affected fruit yield, fruit quality traits, and soil physicochemical properties. Four N rates, N0, N1, N2, and N3, supplied 0.00, 161.00, 322.00, and 483.00 kg N/hm2, respectively, and a non-fertilized blank control (BLK) was included. Yield, betaine, polysaccharides, total flavonoids, soluble solids, soil pH, soil organic matter (SOM), total phosphorus (TP), available phosphorus (AP), and soil enzyme activities were determined. Compared with the BLK, N2 increased the fruit yield from 933.24 to 2899.71 kg/hm2, an approximately threefold increase. Conversely, the highest N input decreased the soil pH and SOM in the 20–40 cm layer while increasing the surface soil electrical conductivity (EC). Under N3, the total flavonoid and betaine contents decreased by 14.78% and 55.32%, respectively. Thus, moderate N application improved fruit yield while maintaining fruit quality, whereas the highest N input reduced key functional components and enhanced the risk of soil degradation. These findings provide insights for optimizing N management in L. barbarum cultivation within arid regions.
Abstract
Lycium barbarum L., valued for its potential immunomodulatory and metabolism-regulating functions, contains abundant bioactive compounds, including polysaccharides and betaine. The global demand for L. barbarum has grown rapidly at an annual rate exceeding 10.00%. Northwest China is the principal cultivation region. However, the highest urea application rate has induced soil acidification and nutrient imbalance, threatening the sustainability of this agricultural system. A three-year field experiment was conducted in the Wuwei oasis irrigation area to assess how different nitrogen (N) application rates affected fruit yield, fruit quality traits, and soil physicochemical properties. Four N rates, N0, N1, N2, and N3, supplied 0.00, 161.00, 322.00, and 483.00 kg N/hm2, respectively, and a non-fertilized blank control (BLK) was included. Yield, betaine, polysaccharides, total flavonoids, soluble solids, soil pH, soil organic matter (SOM), total phosphorus (TP), available phosphorus (AP), and soil enzyme activities were determined. Compared with the BLK, N2 increased the fruit yield from 933.24 to 2899.71 kg/hm2, an approximately threefold increase. Conversely, the highest N input decreased the soil pH and SOM in the 2040 cm layer while increasing the surface soil electrical conductivity (EC). Under N3, the total flavonoid and betaine contents decreased by 14.78% and 55.32%, respectively. Thus, moderate N application improved fruit yield while maintaining fruit quality, whereas the highest N input reduced key functional components and enhanced the risk of soil degradation. These findings provide insights for optimizing N management in L. barbarum cultivation within arid regions.关键词
Lycium barbarum L./fruit yield/fruit quality/nitrogen (N) fertilization/soil physicochemical propertyKey words
Lycium barbarum L./fruit yield/fruit quality/nitrogen (N) fertilization/soil physicochemical property引用本文复制引用
WANG Chenwen,LIU Jianguo,ZHUXinting,ZHAO Zehe,XU Jingjing,TENG Baoqin.Nitrogen fertilization alters fruit yield and quality traits of Lycium barbarum in Northwest China[EB/OL].(2026-09-28)[2026-10-01].https://chinaxiv.org/abs/202609.00508.学科分类
园艺
