Pedosphere 18(6): 795--800, 2008
ISSN 1002-0160/CN 32-1315/P
©2008 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Relationships between agronomic and environmental soil test phosphorus in three typical cultivated soils in China |
| WANG Xin-Min1,2,3, JIE Xiao-Lei1, ZHU Yong-Guan2, HOU Yan-Lin2 and ZHANG Tie-Quan3 |
1 Zhengzhou College of Animal Husbandry Engineering, Zhengzhou, Henan 450011 (China). E-mail: kirk123@163.com;
2 Department of Soil Environmental Science, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 (China);
3 Greenhouse and Processing Crops Research Center, Agriculture & Agri-Food Canada, Harrow, Ontario N0R 1G (Canada) |
| ABSTRACT |
| A study was conducted to determine the relationships between agronomic soil test P and environmental soil test P in three soils predominately distributing in three typical agricultural production areas of China. Soil P was analyzed using Bray-1 (BP), Olsen (OP), and Mehlich-3 (MP) methods as agronomic tests, and using Fe-oxide impregnated filter paper (FeP), anion-exchange resin membrane (RP), and water (WP) as environmental tests. There were linear relationships between soil P extractable with all the tests evaluated. The regression coeffcients, R2, ranged from 0.8164 to 0.9409 between each two of the agronomic soil test P, and ranged from 0.4702 to 0.8990 between each two of the environmental soil test P, when the three soils were considered separately. When soil test P was analyzed across all the three soils, the highest regression R2 was found between OP and MP (0.7940) amongst agronomic soil test P, and between FeP and RP amongst environmental soil test P (0.8842). While all of the three agronomic soil test P was linearly related to each of the environmental soil test P across the three soils, strongest relationships were found between OP and environmental soil test P. Agronomic OP may be adopted as an analytical tool for environmental prediction of soil P. |
| Key Words: environment, phosphorus, testing methods |
| Citation: Wang, X. M., Jie, X. L., Zhu, Y. G., Hou, Y. L. and Zhang, T. Q. 2008. Relationships between agronomic and environmental soil test phosphorus in three typical cultivated soils in China. Pedosphere. 18(6): 795-800. |
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