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| Effects of Boscalid on Enzyme Activities in Acid Purple Soil |
| Received:June 08, 2015 |
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| KeyWord:boscalid;acid purple soil;enzyme activity |
| Author Name | Affiliation | E-mail | | JIANG Fan | College of resources, Sichuan Agricultural University, Chengdu 611130, China | | | HU Yu-fu | College of resources, Sichuan Agricultural University, Chengdu 611130, China | 66433119@qq.com | | LI Heng-wei | College of resources, Sichuan Agricultural University, Chengdu 611130, China | | | SHU Xiang-yang | College of resources, Sichuan Agricultural University, Chengdu 611130, China | | | PANG Yu | College of resources, Sichuan Agricultural University, Chengdu 611130, China | | | JIANG Shuang-long | College of resources, Sichuan Agricultural University, Chengdu 611130, China | | | WANG Jing-wen | College of resources, Sichuan Agricultural University, Chengdu 611130, China | |
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| Abstract: |
| This paper studied the effects of boscalid on urease, nitrate reductase, nitrite reductase and dehydrogenase in acid purple soil in a pot experiment. Results showed that activites of all enzymes in soil treated with boscalid ranged from 10 to 200 mg·kg-1 and were significantly affected on day 7 after boscalid treatments. In 10 mg·kg-1 boscalid-treated soil, all enzyme activities were not markedly different from the control from 14~42 days. In 50 mg·kg-1 treatment, soil enzyme activities resumed normal levels during 14~42 th day, with an exception of dehydrogenase. In 100 mg·kg-1 treatment, however, nitrite reductase displayed “inhibition-recovery-stimulation”; while urease, nitrate reductase and dehydrogenase activities were inhibited during the experimental period. In 200 mg·kg-1 soil, the activites of four enzymes were notably inhibited during the experimental period. Urease had significant and positive correlation with nitrate reductase, nitrite reductase and dehydrogenase. Significant and positive correlationship was found between nitrate reductase and dehydrogenase. |
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