摘要： 研究了不同生物气候带下的几种土壤对Cu,Pb、Cd、F的吸附特性、缓冲性及其对土壤中养分元素比例变化的影响；改良剂CaCO3及K2HPO4的使用对土壤一植物系统中养分元素分布及有效性的影响。结果表明，有机质含量高的泥炭土及CaCO3含量高的褐土对Cu、Pb、Cd的吸附性强，缓冲性强，而红壤及黄棕壤对上述供试元素吸附性弱，缓冲性弱。Cu、Pb、Cd污染使土壤溶液中Ca含量增加，F污染使土壤溶液中Fe含量增加。施用改良剂可以改变土壤-植物系统中的可溶态Fe、Mn、Ca、Mg的分布。在红壤、黄棕壤中施加CaCO3比施加K2HPO4效果为佳，可以增加土壤-植物系统中养分元系的有效性。
关键词:
土壤,
吸附,
营养元素,
污染,
改良剂
Abstract: The absorption of Cu, Cd, Pb, F by several types of soil in different bio-climatic zones, the soil bufferring capacity to heavy metals, the effects of Cu, Cd, Pb, F on several plant nutrition elements ratio in soil solution, the effect of the ameliorants CaC03 and K2HP04 on distribution of these nutrition elements in soil-plant system, and their availibility were 3isscussed. The results indicated that absorption and bufferring capacity to Cu, Cd, Pb was strong in peat soil with high organic matter content and brown soil with high level of CaC03, but was relative weak in red soil and yellow-brown soil. The Ca concentration in soil solution increased with addition of Cu, Cd, Pb into soil, and Fe concentration increased with pollution of F. The ameliorants CaC03 and K2HP04 could change the distribution of Fe, Mn, Ca, Mg in soil-plant system. The ameliorant CaC03 could increase the plant nutrition availibility in red soil and yellow-brown soil which had lower level of CaC03,and effect of CaC03 is better than that of K2HP04 in such soil.
Key words:
Soil,
Buffering capacity,
Absorption,
Nutrition elements,
Ameliorant
中图分类号:
华珞, 刘秀珍, 夏立江, 白玲玉, 韦东甫. 土壤对铜、镉、铅、氟的吸附及改良剂对土壤－植物系统中养分元素有效性的影响[J]. 华北农学报, 1994, 9(1): 57-62. doi: 10.3321/j.issn:1000-7091.1994.01.012.
Hua Luo, Liu Xiuzhen, Xia Lijiang, Bai Lingyu, Wei Dongpu. Absorption of Cu, Pb, Cd, F by Soil and Effect of Ameliorants to Availibility of Nutrition Elements in Soil-Plant System[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1994, 9(1): 57-62. doi: 10.3321/j.issn:1000-7091.1994.01.012.