Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (10): 2251-2258.DOI: 10.3969/j.issn.1004-1524.2022.10.19

• Environmental Science • Previous Articles     Next Articles

Effects of different fumigation on continuous cropping soil in peach orchard

GAO Zhiyuan1(), YANG Shuna1, WANG Zhaoli2, WANG Zhihao1, XI Xinyan1, HE Juan2, JIA Huijuan1,*()   

  1. 1. College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
    2. Agricultural Technology Extension Center of Linping District, Hangzhou City, Hangzhou 311000, China
  • Received:2021-11-01 Online:2022-10-25 Published:2022-10-26
  • Contact: JIA Huijuan

Abstract:

In order to explore the impact of different fumigation on continuous cropping soil in peach orchard, a peach orchard cultivated for 10 a in Yuhang District, Hangzhou City, was selected as test area. The soil in this orchard was disinfected by biological fumigation (with either water bamboo straw or chicken manure) and chemical fumigation (with dazomet). During the vigorous growing season, the changes of soil microbial communities, soil enzyme activities and soil basic physicochemical properties were determined before and after treatment. It was shown that chemical fumigation significantly (P<0.05) reduced the relative abundance of harmful fungi such as Fusarium and significantly (P<0.05) reduced the diversity, richness and uniformity of fungi and bacterial communities. Biological fumigation significantly (P<0.05) increased the relative abundance of Fusarium, and significantly (P<0.05) reduced the diversity of fungi and bacteria, and bacterial richness, and fungal uniformity. In addition, biological fumigation significantly (P<0.05) increased the relative abundance of beneficial funi such as Penicillium and Chaetomium, while chemical fumigation had a significant (P<0.05) inhibition effect on beneficial fung: such as Saitozyma and Chaetomium. Biological fumigation significantly (P<0.05) increased soil urease, sucrase and catalase activities, and fumigation with water bamboo straw also significantly (P<0.05) increased soil acid phosphatase activity, while fumigation with chicken manure significantly (P<0.05) reduced soil acid phosphatase activity. Chemical fumigation significantly (P<0.05) reduced soil urease, catalase activity and acid phosphatase activity. After fumigation with water bamboo straw, the contents of soil organic matter and nitrogen, phosphorus and potassium were significantly (P<0.05) increased, and soil acidification was alleviated. After fumigation with chicken manure, the contents of soil exchangeable magnesium and calcium were increased significantly (P<0.05). However, after chemical fumigation, the contents of soil nitrogen, phosphorus and potassium decreased significantly (P<0.05). In summary, appropriate biological fumigation was conducive to improve the soil microbial communities structure and increase soil nutrients, while chemical fumigation was conducive to inhibite the growth of harmful soil microbes, yet was not conducive to the exertion of soil enzymes activities and the transformation and accumulation of soil nutrients.

Key words: continuous cropping obstacles, soil disinfection, soil microbial community, soil enzyme activity, soil physical and chemical properties

CLC Number: