富镉复垦基质中添加改良剂对作物镉含量及产量的影响  

Effects of ameliorants addition on Cd contents and yield of crop in Cd-rich reclaiming substrates

作　　者：赵敬美[1] 冯永军[1] 郝桂喜[1] 樊瑞[1] 

机构地区：[1]山东农业大学资源与环境学院,泰安271018

出　　处：《农业工程学报》2010年第6期292-295,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：山东省教育厅科技计划课题(J02L07)

摘　　要：为了选择出可以在基质中安全种植的作物,该文研究了在粉煤灰加酒糟(基质Ⅰ)和粉煤灰加污泥(基质Ⅱ)混合成的基质中添加柠檬酸和熟石灰作为改良剂,对芸豆、豇豆和马铃薯镉含量及产量的影响。结果表明:熟石灰可以提高作物出苗率,柠檬酸对作物出苗率影响不大。熟石灰可以显著提高基质Ⅰ中芸豆和豇豆以及2种基质中马铃薯的产量,柠檬酸降低基质Ⅰ中芸豆和豇豆的产量,达到显著水平,而对马铃薯在2种基质中的产量影响都不显著。熟石灰可以显著降低芸豆和马铃薯果实中镉的含量,柠檬酸却可以显著增加芸豆果实中镉的含量。粉煤灰加酒糟中可以安全种植的作物为芸豆、豇豆和马铃薯;粉煤灰加污泥中可以安全种植的作物为马铃薯。In this study,there were two substrates,one was fly ash plus vinasse substrate（substrateⅠ）,and the other was fly ash plus sewage sludge substrate（substrateⅡ）.The effects of using citric acid and white lime as ameliorants addition on the growth of kidney beans,cowpeas and potatoes planted on the two substrates were studied to choose the crops which could be securely planted.The results showed that white lime could significantly rise the emergence ratio,while citric acid had little effects on emergence ratio.The yield of kidney beans and cowpeas in substrate Ⅰand potatoes in both substrates could be significantly increased by white lime;citric acid significantly decreased the yield of kidney beans and cowpeas in substrateⅠ,but had no significant effect on product of potatoes in both substrates.White lime could significantly decrease the content of Cd in both kidney beans and potatoes,while citric acid could significantly increase the content of Cd in kidney beans.Kidney beans,cowpeas and potatoes can be securely planted in fly ash plus vinasse substrate and only potatoes can be securely planted in fly ash plus sewage sludge substrate.

关 键 词：复垦 基质 柠檬酸 镉 熟石灰 作物产量 

分 类 号：S156.2[农业科学—土壤学] X171.4[农业科学—农业基础科学]