›› 2014, Vol. 26 ›› Issue (2): 0-439443.

• 环境科学 •    

添加竹炭对土壤化学性质和重金属有效性及水稻生长的影响

宿贤超,胡杨勇,赵薇,叶正钱*   

  1. 浙江农林大学 资源与环境学院,浙江省森林生态系统碳循环与固碳减排重点实验室,浙江 临安 311300
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2014-03-25 发布日期:2014-07-09

Effects of addition of bamboo charcoal on soil chemical properties, heavy metal availability, and rice growth

SU Xianchao;HU Yangyong;ZHAO Wei;YE Zhengqian*   

  1. Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, School of Environmental and Resource Sciences, Zhejiang A&F University, Linan 311300, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2014-03-25 Published:2014-07-09

摘要: 采用盆栽试验,研究竹炭对水稻生长、土壤理化性状及土壤重金属有效性的影响。设2种竹炭粒径(200 mm, 025 mm)和4个施用量(0, 5, 10和20 g·kg-1)处理。结果表明,水稻总干物质重随着竹炭施用量的增加而增加,但未受到竹炭粒径的显著影响;竹炭对水稻产量的促进作用主要通过增加穗数和穗粒数;添加竹炭有利于土壤pH趋于中性和有机质的积累,能够显著降低了土壤速效N,P,K含量;施用5 g·kg-1的竹炭即可显著提高土壤中Pb,Zn,Cu,Cd的活性;在合理的竹炭施用量和粒径条件下(10 g·kg-1,025 mm),米粒中Cd含量呈现下降的趋势。

关键词: 竹炭, 土壤, 重金属, 水稻

Abstract: A pot experiment was conducted to test the effects of bamboo charcoal on rice growth, soil chemical properties, soil heavy metal availability in the polluted soil by heavy metals. Treatments of bamboo charcoal were combinations of four rates (0, 5, 10 and 20 g·kg-1) and two particles sizes (2 and 025 mm mesh sieves). The results showed that total dry weight of rice plants increased with increasing rates of bamboo charcoal; addition of bamboo charcoal significantly increased soil pH and organic matter contents. Compared to the control, soil heavy metal availabilities were significantly increased by bamboo charcoal, especially for Cu and Zn. For the treatment of 025 mm bamboo charcoal with 10 g·kg-1, the content of Cd in rice grains was significantly decreased.

Key words: bamboo charcoal, soil, heavy metal, rice