| Soil organic matter and enzyme activity in orchards of Weibei |
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| DOI：10.7606/j.issn.1000-7601.2012.04.16 |
| Key Words: Weibei orchard soil organic matter soil enzyme activity |
| Author Name | Affiliation | | SHI Zonglin | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | WANG Yiquan | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHANG Lu | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | YU Jianbo | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China
Fruit Industry Bureau of Shaanxi Province, Xi'an, Shaanxi 710018, China | | JIAO Caiqiang | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | RAN Yanling | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| The research is to study the evolution tendency of soil quality in Weibei orchards and to analyse the effect of soil factors on sustainable development of apple trees. Three different ages of apple orchards were selected which were <10a, 10～20a, >20a in Weibei dry plateau, with the soil in farmland as comparison, and the variation characteristics of soil organic matter, catalase, urease, alkaline phosphatase activity were studied bed-by-bed in 0～100 cm soil layer. With the growing of planting age, the content of soil org
anic matter was cumulated with varying degree, obviously even accumulated in >20a orchards in 0～20 cm surface layer, and decreased at the preliminary planting time, and increased after 20 years in 20～40 cm layer. The changes of soil enzym
e activities of the three kinds of orchards were mainly concentrated in 0～40 cm layer, and catalase activity were decreased in 0～40 cm layer and were significantly less than farmland within 0～100 cm layer, urease activity were increased with varying degree in 0～40 cm layer, and phosphatase activity showed relatively high momentum in 0～40 cm layer. Correlation analysis showed that the soil organic matter was remarkable related with the three soil enzemes. It can be obtained that reducing significantly the catalase activity and increasing urease activity in surface layer may have some effect on the growth of apple trees. |
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