| Effects of cultivation and mulch measures on soil hydrothermal dynamics, and growth, yield and fruit quality of Lycium Barbarum L. |
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| DOI：10.7606/j.issn.1000-7601.2021.03.11 |
| Key Words: Lycium Barbarum L. cultivation patterns soil hydrothermal considtion growth parameter yield and quality |
| Author Name | Affiliation | | WANG Jiaxin | College of Water Resources and Architectural Engineering, Northwest A & F University
Institute of Water\|saving Agriculture in Arid Areas of China, Northwest A & F University | | GAO Xiaodong | Institute of Water\|saving Agriculture in Arid Areas of China, Northwest A & F University
Institute of Soil and Water Conservation, Northwest A & F University
Institute of Soil and Water Conservation, Chinese Academy of Science & Ministry of Water Resources, Yangling, Shaanxi 712100, China | | ZHAO Xining | Institute of Water\|saving Agriculture in Arid Areas of China, Northwest A & F University
Institute of Soil and Water Conservation, Northwest A & F University
Institute of Soil and Water Conservation, Chinese Academy of Science & Ministry of Water Resources, Yangling, Shaanxi 712100, China | | ZHOU Yanqing | College of Water Resources and Architectural Engineering, Northwest A & F University
Institute of Water\|saving Agriculture in Arid Areas of China, Northwest A & F University | | WU Pute | Institute of Water\|saving Agriculture in Arid Areas of China, Northwest A & F University
Institute of Soil and Water Conservation, Northwest A & F University
Institute of Soil and Water Conservation, Chinese Academy of Science & Ministry of Water Resources, Yangling, Shaanxi 712100, China |
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| Abstract: |
| A field experiment was conducted in Huaitou Tala Irrigation District, Delingha City, Haixi Prefecture, Qinghai Province from May to September of 2018. Four\|years old Lycium barbarum L. trees, which were planted in irrigation district were set as objectives in this study to investigate the effects of ridge\|furrow mulching planting pattern (MR, 10 cm ridge height, 32 cm ridge width, and 22 cm ditch width), flat mulching planting pattern (MF), and flat unmulched planting pattern (CK) on the soil hydrothermal dynamics, Lycium barbarum L. growth, and fruit yield and quality under drip irrigation condition. The results showed that compared with CK, MR had a significant effect in increasing soil temperature and soil moisture. During the whole growing period, the accumulated soil temperature of 0~40 cm was increased by 4 755℃ over CK, and the soil water storage of 0~100 cm was increased by 16%. At the same time, the daily soil evaporation rate of CK was significantly higher than that of mulching treatment, and the maximum evaporation rate occurred during the flowering period, reaching 4 mm·d-1. Total soil evaporation of CK was 40% higher than that of the MR, but the accumulated transpiration of CK was significantly lower than that of the MF and MR (P<0.05). In the whole growing period, the plant height and leaf area index were in an order MR>MF>CK, but there was no significant difference among different treatments. The ground diameter of Lycium Barbarum L. under MR was significantly higher than that of the other two treatments at the early stage of germination and fruit picking (P<0.05), but there was no significant difference in ground diameter in the later seasons. In addition, from the end of July to the beginning of August, after summer fruit picking and before autumn fruit picking, Lycium Barbarum L. shrinkage phenomenon was observed, which was reflected by the decreased observed values of plant height, leaf area index, and ground diameter. The MR showed a good increase on the yield. The total yield of wolfberry of MR reached 1 312.17 kg·hm-2, which was 16% higher than that of CK, fruit diameter, fruit length, and yield per plant were also significantly higher than CK (P<0.05), and water use efficiency was increased by 3%. However, different treatments had no significant effect on fruit quality indices such as vitamin C content and total sugar content. In summary, this study showed that the MR significantly improved soil water and heat conditions, provided higher yield and water use efficiency, and was a suitable planting pattern for arid inland river irrigation areas. |
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