Preliminary Study on the Enzyme Activity of Vegetable Garden Soil in Tianjin Suburbs

doi:10.3321/j.issn:1000-7091.1992.02.014

Abstract

Abstract: The distribution of enzyme activity of alkaline phosphatase, urease, invertase and proteinase in profiles of vegetable garden soils where vegetable plants were grown for different years in Tianjin suburbs was analysed. The effect of different fertilizer application on soil enzyme activity were studied. The results indicated that the activities of 4 enzymes decreased with the increase of soil depth, and increased with vegetable planting years. The urease and alkaline phosphatase appeared to have a clearly correlated tendency. The level of enzyme activity in the vegetable garden soil profile was higher than that of crop soil. The enzyme activity of vegetable garden soil showed positive correlation with soil organic matter, total nitrogen, total phosphorus and available phosphorus. So, enzyme activity could be used as an index for evaluation of soil fertility. The combined application of mineral and organic fertilizers was an effective method that may enhance enzyme activity and soil fertility.

Key words: Vegetable garden soil, Enzyme activity, Soil fertility

Zhou Yimin, Wang Zhengxiang, Ren Shunrong, Zhang Jinsheng, Zhao Zhenda. Preliminary Study on the Enzyme Activity of Vegetable Garden Soil in Tianjin Suburbs[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1992, 7(2): 77-81. doi: 10.3321/j.issn:1000-7091.1992.02.014.

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