期刊论文

中文

中国农学通报

1000-6850

2014

30

30

28-33

国家自然科学基金“生物质炭对镉在红壤—水稻系统中迁移转化的影响机制”（41101293）； 广东省自然科学基金项目“重金属污染下水稻根际土壤有机碳与微生物群落演变”（9451064201003780）； 国家重点基础研究发展计划（“973”计划）“农田地力形成与演变规律及其主控因素”（2011CB100501）；

本校为第一机构

为了解水稻根际土壤酶活性的变化及其与根际重金属有效性的关系,选取酸性矿山废水污灌形成的多重金属污染水稻土,采用根际袋模拟水稻根际环境,研究水稻根际土壤脲酶、磷酸酶、蔗糖酶、过氧化氢酶活性的变化特征及其与土壤有效态Cd、Pb、Cu和Zn含量的关系。结果表明,根际土壤p H和脲酶活性均低于非根际土壤,根际土壤微生物量碳和磷酸酶活性均高于非根际土壤。根际土壤有效态Cd和Zn含量低于非根际土壤,有效态Pb和Cu含量高于非根际土壤。土壤p H与有效态Pb和有效态Zn均呈显著负相关,有效态Cd、有效态Pb和有效态Cu含量与微生物量碳均呈显著正相关,有效态Cd、有效态Pb、有效态Cu和有效态Zn含量与土壤...

A soil-cultivating test, with rhizobag technique, was conducted to study soil enzymatic activities and its relationships with available heavy metal concentration in rhizosphere of rice （Otyza sativa L.）. The changes of urea, phosphatase, sucrase and catalase activities in the rhizosphere soil and its relationships with available Cd, Pb, Cu and Zn concentrations were investigated. The soil samples were taken from the multi- metal contaminated paddy soils due to the irrigation of acid mine drainage for more than 40 years. The results showed tha...