中国水稻科学2012，Vol.26Issue(4)：445-450,6.DOI:10.3969/j.issn.1001-7216.2012.04.009
添加硫酸铝对稻田土中氟形态及水稻氟吸收的影响
Effect of Al2 (SO4)3 Application on Fluorine Forms in Paddy Soil and Fluorine Absorption by Rice Plants
摘要
Abstract
The variation of F content in rice plants and in paddy soil at different Al; (SO, )3 application levels was investigated in a biological pot experiment. The results showed that rice plants absorbed F extravagantly, and the order of F content in each part was as follows: husk>brown rice >root>straw. At a given F level in soil, the concentration of F in each part was firstly decreased and then increased with rising Alz (SO, )^ application level. It minimized at 0. 4% and 0. 6% of A12(SO,)3 levels, showing extremely significant difference with the blank control. As Alz (SO, )3 application level increased, the contents of free F and water soluble F were gradually decreased. The linear analysis showed that the two forms of F was negatively correlated with the amount of Al2 (SO, )3 But there was significant positive correlation between the content of residual F and Al2 (SO, )3. The content of exchangeable F in soil firstly increased and then decreased with the increase of Alz (SO,).,application amount and peaked at 0. 2% A12(SO,)j level. However, the exchangeable F content in soil at 0. 2% A12(SO, )3 level was not significantly different from that of the control, and was extremely significantly differed with those at 0.4% -0. 8% Al2 (SO, )3 levels, indicating that A12(SO, )3 mainly depressed the exchangeable F. The contents of complex F, Fe/Mn binding F and organic F were also firstly increased and then decreased with their maximum appeared at 0. 4% and 0.6% Al2 (SO,), levels. Correlation analysis showed that there was a significantly or extremely significantly negative correlation between the concentration of F in each part and the contents of Fe/Mn binding F, organic F in soil. Thus, at 0. 4% -0. 6% Al2 (SO, )3 levels, equivalent to the F ' Al quality ration of 6 :1- 4 : 3, the F concentration in each plant part was relatively lower, which indicated that its defluoridation efficiency was better. At the same time, the contents of water soluble F, exchangeable F were lower and the contents of Fe/Mn binding F, organic F were higher which reduced F infiltration to groundwater and lower the F intake by people and animals eating cooked rice and drinking groundwater.关键词
水稻/硫酸铝/氟含量/氟形态/降氟Key words
rice/ Al2(SO, )3/ F content/ F form/ F defluoridation分类
农业科技引用本文复制引用
刘金华,赵兰坡,王鸿斌,张志丹,张忠庆..添加硫酸铝对稻田土中氟形态及水稻氟吸收的影响[J].中国水稻科学,2012,26(4):445-450,6.基金项目
吉林省科技厅重点科技招标项目(20096028) （20096028）
公益性行业(农业)科研专项经费资助项目(200903001-06-2) （农业）
吉林农业大学青年基金资助项目(201139). （201139）
