Pedosphere 4(4): 357--361, 1994
ISSN 1002-0160/CN 32-1315/P
©1994 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Effect of Cl- on behavior of fertilizer nitrogen, number of microorganisms and enzyme activities in soils |
| SHI Wei-Yong, CHENG Mei-Zi, LI Chun-Jiu and MA Guo-Rui |
| Dept. of Soil Sci. and Plant Nutrition, Zhejiang Agricultural University, Hangzhou 310029 (China) |
| ABSTRACT |
| Pot experiments were conducted to study the effect of Cl- on transformation of fertilizer N, number of microorganisms and enzyme activities in soils. It is indicated that Cl- did not show significant influence on total number of bacteria, actinomyces and fungi, but significantly reduced the number of nitrosobacteria, which led to decrease of NO3- content in the soil. Application of Cl- to soil could significantly enhance the activities of phosphatase and urease in the coastal saline soil and orthic aquisols. In hilly red soil, however, the application of Cl- at the rate of 500-1000 mg Cl- kg-1 soil significantly decreased the activity of the two enzymes mentioned above. |
| Key Words: Cl-, enzyme, fertilizer N, microorganism, soils |
| Citation: Shi, W. Y., Cheng, M. Z., Li, C. J. and Ma, G. R. 1994. Effect of Cl- on behavior of fertilizer nitrogen, number of microorganisms and enzyme activities in soils. Pedosphere. 4(4): 357-361. |
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