摘要
采用水培实验和大田种植的方法研究硅对水稻吸收砷的影响,以及对水稻生物量的影响。在水培实验中,施加硅后水稻各部分的砷含量均明显下降,茎部最高降幅达到75%。在大田试验中,施加富硅改良剂后,籽实的砷含量下降44%,籽实重量上升了21%。富硅改良剂治理砷污染水稻田具有良好的应用前景。
Silicon-rich modifying agent was used to reduce the arsenic uptake of rice growing in the arsenic-polluted field. The rice growing in the arsenic-polluted water, in which sodium silicate was added, showed considerably less arsenic accumulation, with up to 75% arsenic uptake reduction in rice shoots. The grain obtained from the field treated with silicon-rich agent is 21% more than the control group, while the arsenic accumulation is 44% lower than the control group. The silicon-rich soil amendment is of considerable potential in repairing arsenic contaminated paddy soil.
出处
《广州环境科学》
2011年第3期41-44,47,共5页
Guangzhou Environmental Science
关键词
富硅改良剂
砷污染
水稻田
土壤
silicon-rich soil amendment arsenic pollution paddy field soil
