JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2015, Vol. 39 ›› Issue (02): 21-26.doi: 10.3969/j.issn.1000-2006.2015.02.004

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Effects of biological mulching on soil enzyme activity of ginkgo(Ginkgo biloba L.)timber plantation

XU Hongqiang1,2,3, WANG Guibin1,2*, CAO Fuliang1,2, ZENG Xiangdong1,2   

  1. 1. Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China;
    2. College of Forestry, Nanjing Forestry University, Nanjing 210037, China;
    3. Forestry Bureau of Jiangsu Province, Nanjing 210036, China
  • Online:2015-03-31 Published:2015-03-31

Abstract: Biological mulching is an important soil management measurement for improving soil properties and crop yield, and it is widely used in forestry. In this paper, a randomized block design was used, the effect of mulching materials(wheat straw, rice straw and corn straw)and mulching amount(2, 4, 6 kg/m2)on enzyme activity of surface soil(0-10 cm)in ginkgo(Ginkgo biloba L.)timber plantation were studied. We found that urease, alkaline phosphatase, sucrase and catalase activities were increased in a different degree under three mulching materials, and the mulching effect of corn straw and rice straw were better. Mulching amount of corn straw had a significant effect on the activity of four soil enzymes, and the activities of four enzymes had an enhancing tendency with the increasing of mulching amount. The activity of urease, alkaline phosphatase and sucrase were identical with variation of temperature in a year, and they reached the highest activity in July. But catalase owned the highest activity in October, indicating that temperature has more effect on the activity of urease, alkaline phosphatase and sucrase than that of catalase. Overall, biological muching increased the activity of soil enzymes in ginkgo timber plantation, and improved soil fertility.

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