Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (2): 426-433.DOI: 10.1016/S2095-3119(13)60564-X

• 论文 • 上一篇    下一篇

Responses of Ryegrass (Lolium perenne L.) Grown in Mudflats to Sewage Sludge Amendment

 BAI Yan-chao, GU Chuan-hui, TAO Tian-yun, ZHU Xiao-wen, XU Yi-ran, SHAN Yu-hua , FENG Ke   

  1. 1.College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, P.R.China
    2.Department of Geology, Appalachian State University, Boone, North Carolina 28607, USA
  • 收稿日期:2013-02-27 出版日期:2014-02-01 发布日期:2014-02-06
  • 通讯作者: SHAN Yu-hua, Tel: +86-514-89799185, Email: shanyuhua@gmail.com
  • 作者简介:BAI Yan-chao, Tel: +86-514-87979645, E-mail: byc529@gmail.com
  • 基金资助:

    This study is financially supported by the National Natural Science Foundation of China (31101604), the Public Foundation of Key Laboratory of Environmental Materials and Engineering of Jiangsu Province, China (JHCG201011) and the Foundation of Jiangsu Educational Committee, China (12KJB210008).

Responses of Ryegrass (Lolium perenne L.) Grown in Mudflats to Sewage Sludge Amendment

 BAI Yan-chao, GU Chuan-hui, TAO Tian-yun, ZHU Xiao-wen, XU Yi-ran, SHAN Yu-hua , FENG Ke   

  1. 1.College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, P.R.China
    2.Department of Geology, Appalachian State University, Boone, North Carolina 28607, USA
  • Received:2013-02-27 Online:2014-02-01 Published:2014-02-06
  • Contact: SHAN Yu-hua, Tel: +86-514-89799185, Email: shanyuhua@gmail.com
  • About author:BAI Yan-chao, Tel: +86-514-87979645, E-mail: byc529@gmail.com
  • Supported by:

    This study is financially supported by the National Natural Science Foundation of China (31101604), the Public Foundation of Key Laboratory of Environmental Materials and Engineering of Jiangsu Province, China (JHCG201011) and the Foundation of Jiangsu Educational Committee, China (12KJB210008).

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摘要： Sewage sludge amendment (SSA) is an alternative waste disposal technique and a potential way to increase fertility of mudflats for crop growth. The present study aimed to assess the suitability of SSA by assessing the nitrogen (N) and phosphorous (P) uptakes, heavy metal accumulation, growth, biomass, and yield response of ryegrass (Lolium perenne L.) at 0, 30, 75, 150, and 300 t ha-1 SSA rates at various growth stages. The results showed that the highest biomass of ryegrass at seedling and vegetative stages were at 300 and 150 t ha-1 SSA rate, respectively. The increments of ryegrass yield at reproductive stage at 30, 75, 150, and 300 t ha-1 SSA rates were 98.0, 122.6, 88.1, and 61.2%, compared to unamended soil. N and P concentrations in ryegrass increased with increasing SSA rates at all stages except N and P in roots dropped significantly at 300 t ha-1 rate at vegetative stage. The metal concentration for Mn, Cu, Zn, Ni, Cd, Cr, and Pb in shoot of ryegrass at 300 t ha-1 SSA rate increased by 0.63-, 2.34-, 15.02-, 0.97-, 10.00-, 0.01- and 1.13-fold, respectively, compared to unamended soil. However, heavy metal concentrations in shoot of ryegrass were lower than the standard for forage products in China. The study suggested that sewage sludge amendment in mudflat soils might be feasible. However, the impacts of sludge application on edible crop plants and soil environment need further investigations.

关键词: sewage sludge , mudflat soil , ryegrass , growth , metals

Abstract: Sewage sludge amendment (SSA) is an alternative waste disposal technique and a potential way to increase fertility of mudflats for crop growth. The present study aimed to assess the suitability of SSA by assessing the nitrogen (N) and phosphorous (P) uptakes, heavy metal accumulation, growth, biomass, and yield response of ryegrass (Lolium perenne L.) at 0, 30, 75, 150, and 300 t ha-1 SSA rates at various growth stages. The results showed that the highest biomass of ryegrass at seedling and vegetative stages were at 300 and 150 t ha-1 SSA rate, respectively. The increments of ryegrass yield at reproductive stage at 30, 75, 150, and 300 t ha-1 SSA rates were 98.0, 122.6, 88.1, and 61.2%, compared to unamended soil. N and P concentrations in ryegrass increased with increasing SSA rates at all stages except N and P in roots dropped significantly at 300 t ha-1 rate at vegetative stage. The metal concentration for Mn, Cu, Zn, Ni, Cd, Cr, and Pb in shoot of ryegrass at 300 t ha-1 SSA rate increased by 0.63-, 2.34-, 15.02-, 0.97-, 10.00-, 0.01- and 1.13-fold, respectively, compared to unamended soil. However, heavy metal concentrations in shoot of ryegrass were lower than the standard for forage products in China. The study suggested that sewage sludge amendment in mudflat soils might be feasible. However, the impacts of sludge application on edible crop plants and soil environment need further investigations.

Key words: sewage sludge , mudflat soil , ryegrass , growth , metals