| Influential factors of moisture characteristics and its changes for vegetable soil with different planting years in Tianjin City |
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| DOI：10.7606/j.issn.1000-7601.2010.01.03 |
| Key Words: vegetable soil planting years moisture characteristics influential factor change Tianjin |
| Author Name | Affiliation | | WO Fei | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | CAI Yanming | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | TIAN Ying | Chinese Research Academy of Environmental Sciences, Beijing 100012
China | | FANG Kun | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China |
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| Abstract: |
| Influential factors of moisture characteristics, including saturation water content, field capacity, wilting moisture and available water content, and its changes for vegetable soil with different planting years in Tianjin were analyzed. The results showed that saturation water content of vegetable soil with different planting years(over 5 a, over 10 a and over 15 a) were affected by aggregates contents, soil bulk densities and pH values respectively. Field capacities of them were affected by aggregates contents, structure coefficients and pH values respectively. Available water contents of them were affected by aggregates contents, structure coefficients and aggregates contents. However, influential factors of wilting moisture were not obvious. And as the increasing of vegetable planting years, soil saturation water content and field capacity were reducing. Thus, water holding and supplying abilities of soil were reducing. It needed improving water adsorption and using ability of vegetable soil, especially with longer planting years. These results can provide references for water holding and reasonable using of soil with different planting years in arid areas such as Tianjin. |
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