农业环境科学学报Issue(8)：1500-1510,11.DOI:10.11654/jaes.2014.08.006
长期不同施肥措施对土壤铜、锌、镉形态及生物有效性的影响
Influence of Different Long-term Fertilization Practices on Fractionations and Bioavailability of Cu, Zn, and Cd in Soils
摘要
Abstract
The purpose of this study was to investigate the effects of different long-term fertilization practices on fractionations and bioavail-ability of Cu, Zn, and Cd in different soils. BCR extraction procedure was used to determine the fractionations of Cu, Zn, and Cd in soil sam-ples collected from black soil, fluvo-aquic soil and red soil under different fertilization practices i.e. CK, NK, NPK, and NPKM for more than 20-years. In black soil, application of P fertilizers increased the ratios of acid extractable and reducible fractions of Cu and Zn, while organic manures increased the ratios of acid extractable and organic-bonded Cu and Zn, but reduced the proportion of organic-bonded Cd. In fluvo-aquic soil, applying NPK or NPKM increased the proportions of acid extractable, reducible and organic-bonded Zn. In red soil, P fertilizer application increased portions of acid extractable and organic-bonded Zn, and manure addition increased fractions of reducible and organic-bonded Cu and Zn. Stepwise regression analysis between the content of heavy metals in crops and different fractions in soils indicat-ed that the bioavailable fraction of Zn, Cu, and Cd was primarily acid extractable factions in black soil, and acid extractable, reducible and organic-bonded fractions in red soil. In fluvo-aquic soil, reducible and organic-bonded Zn and Cd were most bioavailable fractions. The to-tal and EDTA extractable Zn, Cu and Cd profoundly influenced their fractionations in black and red soil.关键词
长期施肥/重金属形态/生物有效态Key words
long-term fertilization/heavy metal fractionation/bioavailability分类
资源环境引用本文复制引用
王美,李书田,马义兵,黄绍敏,王伯仁,朱平..长期不同施肥措施对土壤铜、锌、镉形态及生物有效性的影响[J].农业环境科学学报,2014,(8):1500-1510,11.基金项目
公益性行业（农业）科研专项 （）
