| Variation of nutrient contents in protected cultivation soil with different planting years in north area of Shanxi Province |
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| DOI：10.7606/j.issn.1000-7601.2012.05.25 |
| Key Words: north area of Shanxi Province protected cultivation planting years soil nutrient |
| Author Name | Affiliation | | ZHAN Runsheng | Colllege of Agriculture and Life Science, Shanxi Datong University, Datong, Shanxi 037009, China | | YUE Xinli | Institute of High Latitude and Cold Area Crops, Shanxi Academy of Agricultural Sciences, Datong, Shanxi 037008,China | | HAN Zhiping | Colllege of Agriculture and Life Science, Shanxi Datong University, Datong, Shanxi 037009, China | | YANG Wen | Agriculture Committee of Yanggao County, Shanxi Province, Yanggao, Shanxi 038100, China | | Rong Tingting | Colllege of Agriculture and Life Science, Shanxi Datong University, Datong, Shanxi 037009, China |
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| Abstract: |
| With farmland and open vegetable fields as control, soil pH value, nutrient contents and its relations in protected cultivation soil with continuous planting years (1, 4, 7, 11, 14, 17 a) in Yanggao County were studied. The results indicated that pH value significantly decreased, nutrient contents obviously increased in protected cultivation soil in comparison with farmland. With increasing of cropping years, organic matter, alkali-hydrolyzable N and available P contents in 0～20 cm and 20～40 cm soil increased within short-term and reduced beyond some years. According to the criteria of soil nutrient contents for protected vegetable soil, pH value, organic matter and available K contents were appropriate, alkali-hydrolyzable N was high, and available P was seriously over proof in protected cultivation soil in Yanggao County. Correlati
on analysis showed that there were negative correlation between pH value and available K content, and positive correlation between every two soil nutrient contents. In short, soil chemical properties had been changed clearly due to irrational fertilization in protected cultivation, we should promote scientific fertiliz
ation in the future. |
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