Pedosphere 25(3): 343--350, 2015
ISSN 1002-0160/CN 32-1315/P
©2015 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Effect of intensive greenhouse vegetable cultivation on selenium availability in soil |
FU Ming-Ming1,2, HUANG Biao1 , JIA Meng-Meng1,2, HU Wen-You1, SUN Wei-Xia1, D. C. WEINDORF3 and CHANG Qing4 |
1Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China)
2University of Chinese Academy of Sciences, Beijing 100049 (China)
3Department of Plant and Soil Science, Texas Tech University, Box 42122, Lubbock TX 79409 (USA)
4Geological Survey of Jiangsu Province, Nanjing 210018 (China) |
| ABSTRACT |
| Soil properties dramatically change after long-term greenhouse vegetable cultivation, which further affects soil selenium (Se) nutritional status and plant Se uptake. An evaluation of Se availability after long-term greenhouse vegetable cultivation (GVC) can help in better understanding its influential factors under GVC conditions and will also facilitate further regulation of soil Se nutrition in GVC systems. Two typical GVC bases were chosen: one with clayey and acidic soil in Nanjing, southern China, and the other with sandy alkaline soil in Shouguang, northern China. Twenty-seven surface soil samples at the Nanjing base and 61 surface soil samples at the Shouguang base were collected according to cultivation duration and cultivation intensity. Soil properties including soil available Se (PO43--Se) and total Se (T-Se) were analyzed. The results showed that soil PO43--Se was significantly and negatively correlated with soil Olsen-P, available K (A-K), and electrical conductivity (EC) at the Nanjing base. At the Shouguang base, however, no significant correlation was found between soil PO43--Se and Olsen-P and EC, and soil PO43--Se increased with increasing soil organic matter (OM). Intensively utilized greenhouse vegetable cultivation caused significant changes in soil properties and further affected soil Se availability. Due to different management practices, the dominant factors affecting Se availability varied between the two GVC bases. At the Nanjing base, the dominant influential factor on soil Se availability was soil nutritional status, especially Olsen-P and A-K status. At the Shouguang base, where organic fertilizers were applied at high rates, soil OM was the dominant influential factor. |
| Key Words: available Se, electrical conductivity, Olsen-P, soil organic matter, soil properties |
| Citation: Fu, M. M., Huang, B., Jia, M. M., Hu, W. Y., Sun, W. X., Weindorf, D. C. and Chang, Q. 2015. Effect of intensive greenhouse vegetable cultivation on selenium availability in soil. Pedosphere. 25(3): 343-350. |
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