高活性土壤调理剂在镉污染酸性稻田中应用
|
摘要
通过田间试验,研究了土壤调理剂对中轻度镉污染稻田土壤的修复效果。结果表明:施用该土壤调理剂可显著提高土壤pH值,提高幅度最高可达0.47个单位,在施用量为1 125和1 500 kg/hm~2条件下,土壤有效态镉平均浓度分别降低了0.114和0.127 mg/kg,精米镉含量分别下降了34.8%和39.2%,稻谷产量分别增加了8.7%和11.6%。该产品可有效改善酸性土壤理化性质、降低土壤镉的可移动性、减少水稻镉吸收、提升稻谷产量,进而提高经济效益。
The effect of soil amendment on cadmium-polluted acidic paddy field was investigated in this study. The results showed that the soil amendment significantly improved the soil pH value with the most up to 0.47 units. Under two soil conditioner rates of 1 125 kg/hm~2 and 1 500 kg/hm~2, contents of soil available cadmium reduced by 0.114 mg/kg and 0.127 mg/kg, cadmium contents in milled rice reduced by 34.8% and 39.2%, and rice yields increased by 8.7% and 11.6%, respectively. The application of soil conditioner can effectively improve soil physical and chemical properties, lower the mobility of cadmium in soil, reduce cadmium uptake by rice, increase rice yield,and further enhance economic returns.
The effect of soil amendment on cadmium-polluted acidic paddy field was investigated in this study. The results showed that the soil amendment significantly improved the soil pH value with the most up to 0.47 units. Under two soil conditioner rates of 1 125 kg/hm~2 and 1 500 kg/hm~2, contents of soil available cadmium reduced by 0.114 mg/kg and 0.127 mg/kg, cadmium contents in milled rice reduced by 34.8% and 39.2%, and rice yields increased by 8.7% and 11.6%, respectively. The application of soil conditioner can effectively improve soil physical and chemical properties, lower the mobility of cadmium in soil, reduce cadmium uptake by rice, increase rice yield,and further enhance economic returns.
引文
[1]李晨昱,卢树昌,王茜.土壤调理剂在农业领域研究现状、问题及前景[J].北方园艺,2018(14):154-160.
[2]Guo J H,Liu X J,Zhang Y,et al.Significant acidification in major Chinese croplands[J].Science,2010,327(5968):1008-1010.
[3]于天一,孙秀山,石程仁,等.土壤酸化危害及防治技术研究进展[J].生态学杂志,2014,33(11):3137-3143.
[4]陈楠,张昊,杨慧敏,等.土壤p H对土壤镉形态及稻米镉积累的影响[J].湖南农业大学学报(自然科学版),2018,44(2):176-182,209.
[5]廖敏,黄昌勇,谢正苗.pH对镉在土水系统中的迁移和形态的影响[J].环境科学学报,1999,19(1):81-86.
[6]刘清,王子健,汤鸿霄.重金属形态与生物毒性及生物有效性关系的研究进展[J].环境科学,1996,17(1):89-92.
[7]张瑶,邓小华,杨丽丽,等.不同改良剂对酸性土壤的修复效应[J].水土保持学报,2018,32(5):330-334.
[8]于宁,关连珠,娄翼来,等.施石灰对北方连作烟田土壤酸度调节及酶活性恢复研究[J].土壤通报,2008,39(4):849-851.
[9]黄耀蓉,王强锋,朱彭玲,等.土壤改良剂对酸性土壤改良的影响[J].西南农业学报,2014,27(4):1637-1640.
[10]姜超强,董建江,徐经年,等.改良剂对土壤酸碱度和烤烟生长及烟叶中重金属含量的影响[J].土壤,2015,47(1):171-176.
[11]Temminghoff E J M,Van D Z S E A T M,De H F A M.Copper mobility in a copper-contaminated sandy soil as affected by pH and solid and dissolved organic matter[J].Environmental Science&Technology,1997,31(4):1109-1115.
[12]李程峰,刘云国,曾光明,等.pH值影响Cd在红壤中吸附行为的实验研究[J].农业环境科学学报,2005,24(1):84-88.
[13]薛毅,盛浩,张亮,等.有机肥和土壤调理剂对中稻的降镉效应[J].湖南农业科学,2018(11):42-45.
[2]Guo J H,Liu X J,Zhang Y,et al.Significant acidification in major Chinese croplands[J].Science,2010,327(5968):1008-1010.
[3]于天一,孙秀山,石程仁,等.土壤酸化危害及防治技术研究进展[J].生态学杂志,2014,33(11):3137-3143.
[4]陈楠,张昊,杨慧敏,等.土壤p H对土壤镉形态及稻米镉积累的影响[J].湖南农业大学学报(自然科学版),2018,44(2):176-182,209.
[5]廖敏,黄昌勇,谢正苗.pH对镉在土水系统中的迁移和形态的影响[J].环境科学学报,1999,19(1):81-86.
[6]刘清,王子健,汤鸿霄.重金属形态与生物毒性及生物有效性关系的研究进展[J].环境科学,1996,17(1):89-92.
[7]张瑶,邓小华,杨丽丽,等.不同改良剂对酸性土壤的修复效应[J].水土保持学报,2018,32(5):330-334.
[8]于宁,关连珠,娄翼来,等.施石灰对北方连作烟田土壤酸度调节及酶活性恢复研究[J].土壤通报,2008,39(4):849-851.
[9]黄耀蓉,王强锋,朱彭玲,等.土壤改良剂对酸性土壤改良的影响[J].西南农业学报,2014,27(4):1637-1640.
[10]姜超强,董建江,徐经年,等.改良剂对土壤酸碱度和烤烟生长及烟叶中重金属含量的影响[J].土壤,2015,47(1):171-176.
[11]Temminghoff E J M,Van D Z S E A T M,De H F A M.Copper mobility in a copper-contaminated sandy soil as affected by pH and solid and dissolved organic matter[J].Environmental Science&Technology,1997,31(4):1109-1115.
[12]李程峰,刘云国,曾光明,等.pH值影响Cd在红壤中吸附行为的实验研究[J].农业环境科学学报,2005,24(1):84-88.
[13]薛毅,盛浩,张亮,等.有机肥和土壤调理剂对中稻的降镉效应[J].湖南农业科学,2018(11):42-45.