Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (23): 64-69.doi: 10.11924/j.issn.1000-6850.casb2021-0896

Special Issue: 生物技术 资源与环境

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Evolution of Soil Trace Elements with Utilization Time in Coastal Plain in Zhejiang Province

ZHANG Jian1(), ZHANG Mingkui2(), XIE Guoxiong3   

  1. 1Wenzhou Plant Protection and Soil-fertilizer Station, Wenzhou, Zhejiang 325600
    2College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058
    3Hangzhou Agricultural Technology Extension Center, Hangzhou 310020
  • Received:2021-09-13 Revised:2021-11-09 Online:2022-08-15 Published:2022-08-08
  • Contact: ZHANG Mingkui E-mail:wznyz@126.com;mkzhang@zju.edu.cn

Abstract:

To understand the changing characteristics of trace elements in cultivated soils of the coastal plain, soil chronosequence with different reclamation and utilization time was established in northern and southern Zhejiang, and both mixed surface soil samples and soil profile horizon samples with different reclamation and utilization time were collected to analyze the basic properties of the soils and the total and available contents of soil trace elements. The results show that reclamation and utilization time has great influence on the contents of trace elements. With the increase of reclamation and utilization time, the contents of copper and zinc in the soil increase, while the contents of soil iron, manganese, boron and molybdenum decrease. The contents of available copper, zinc, iron and manganese increase significantly, while the contents of available boron and molybdenum decrease significantly. The increase of reclamation and utilization time could also enlarge the difference of the contents of trace elements between upper and lower soil layers. The contents of copper, zinc and molybdenum decrease from top to bottom, while the contents of iron, manganese and boron increase from top to bottom. The effects of reclamation and utilization time on soil trace elements are mainly due to the changes of basic soil properties and the leaching effect of long-term rice planting.

Key words: trace elements, reclamation and utilization time, profile distribution, rice planting, availability

CLC Number: