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| Effects of Interplanting White Clover on Soil Total Organic Carbon and Light Organic Carbon Fraction in Apple Orchard |
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| KeyWord:interplanting grasses in orchard; soil organic carbon; light organic carbon fraction |
| Author Name | Affiliation | | ZHANG Yu-dai | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | LI Tong-chuan | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | ZHANG Dao-yong | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | JIA Man-li | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | GUO Hong | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China | | LI Hui-ke | College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, Yangling 712100, China | | CAO Wei-dong | Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China |
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| Abstract: |
| Interplanting cover crops in orchards is one of soil managements for the sustainability of orchards. Herein, we examined dynamics of soil total organic carbon（TOC） and light organic carbon fraction（LOCF） in an apple-white clover system in Weibei Loess Plateau from 2005 to 2011. Soil samples were collected at depths of 0~5 cm, 5~10 cm, 10~20 cm and 20~40 cm in clear tillage and white clover-interplanting orchards. Total organic carbon and soil organic carbon density（SOCD） in apple-white clover intercropping system were significantly increased in comparison with the clear tillage orchard. The increments, however, decreased rapidly with soil depth. Compared to the clear tillage apple orchard, the LOCF and the ratios of LOCF to TOC increased by 7.02, 4.57 times, and 2.49 times and 7.01, 4.57 times and 2.51 times at 0~5 cm, 5~10 cm, and 10~20 cm soil layer, respectively. This suggests that interplanting white clover in apple orchard could improve the quality of soil organic carbon. |
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