Status and changes of soil fertility indices of stagnic anthrosols in Zhejiang Province, China
In order to understand the status and changing trend of soil fertility of stagnic anthrosols in Zhejiang Province, soil organic matter, pH, total N, available P and available K of stagnic anthrosols covering all 11 districts of Zhejiang Province were investaged. The results showed that soil organic...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2012-07-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2012.04.011 |
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| Summary: | In order to understand the status and changing trend of soil fertility of stagnic anthrosols in Zhejiang Province, soil organic matter, pH, total N, available P and available K of stagnic anthrosols covering all 11 districts of Zhejiang Province were investaged. The results showed that soil organic matter and total N of the stagnic anthrosols in Zhejiang Province were mainly classified as medium level, mostly ranging from 20 to 40 g·kg<sup>-1</sup> for organic matter, and 1 to 2 g·kg<sup>-1</sup> for total N. pH values varied greatly from 3.02 to 9.80, and difference of pH values between the highest and the lowest reached 6.78. Most of the stagnic anthrosols were acidic soils. As compared with those obtained at 1980s, mean soil organic matter and total N declined by 6.37% and 6.32%, respectively. Stagnic anthrosols in Zhejiang Province had been significantly acidified in the past 30 years, and the proportion of soils with pH < 5.5 increased and that of soils with pH 5.5-7.5 decreased than those obtained at 1980s. Mean soil available P was about 4-5 times of that obtained at 1980s. However, there was a high proportion of the soils with low level of available P. Soil available K was mainly classified as low to medium levels. The mean available K was higher than that obtained at 1980s. Changes in fertilization structure and transformation of landuse from rice cultivation to upland were thought as main causes of the changes in soil fertility of the stagnic anthrosols. |
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| ISSN: | 1008-9209 2097-5155 |