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| 1 | Natural Organic Amendments for Improved Phytoremediation of Polluted Soils:A Review of Recent Progress显示文摘Environmental pollution caused by metals, radionuclides and organic pollutants affects quality of the biosphere: soil, water and air.Currently, great efforts have been made to reduce, remove or stabilize contaminants in polluted sites. There has been increasing interest in phytoremediation—the use of plants to reduce concentration of pollutants or to render them harmless. This paper provides a brief review of recent progress in the research and practical application of phytoremediation techniques. Improvements in phytoremediation due to utilization of organic amendments, namely, agro- and industrial wastes(such as sugar beet residue, composted sewage sludge or molasses), biochar, humic substances, plant extracts and exudates are discussed, as well as their influences on soil structure and characteristics, plants growth and bioavailability of pollutants. Both plant-assisted phytoremediation and the use of natural materials in the absence of remediating plant are believed to be cost-effective and environmentally friendly approaches for soil cleanup. However,the characterization and quantification of a range of natural materials used in phytoremediation are essential in order to implement these approaches to practice. | Alina WISZNIEWSKA Ewa HANUS-FAJERSKA Ewa MUSZYIISKA Krystyna CIARKOWSKA | 2016 | Pedosphere2016，26，1： | 13 |
| 2 | 外源腐殖酸对栽培基质性状和辣椒生长发育的影响显示文摘为研究添加外源腐殖酸对基于发酵床垫料蔬菜栽培基质的腐殖酸及其他理化性质的变化和辣椒生长发育的影响,本试验通过盆栽试验研究了添加5种水平(0 mg/kg、0.5 mg/kg、1.0 mg/kg、1.5 mg/kg、2.0 mg/kg)外源腐殖酸对辣椒栽培基质在定植期、苗期、开花坐果期和成熟期腐殖酸含量和理化性状的变化以及对辣椒在苗期、开花坐果期和成熟期的生长发育情况及产量的影响。结果表明,与对照相比,各外源腐殖酸添加量处理在定植期、苗期和开花坐果期能显著提高基质腐殖酸含量,并随外源腐殖酸施入量的增加而增加;各外源腐殖酸添加量处理在开花坐果期和成熟期,基质p H值有所增加,而在定植期、苗期、开花坐果期和成熟期,基质电导率均有不同程度下降,对基质的有机质和粗灰分含量影响不显著,在4个生育期基质的全氮、全磷、钾含量随外源腐殖酸添加量的增加而略有增加,而基质容重、总孔隙度和通气孔隙度有所降低。添加外源腐殖酸均能不同程度地增加辣椒植株在苗期、开花坐果期和成熟期的植株鲜质量、干质量、株高、根长和茎粗,其中添加量为2.0 mg/kg和1.5 mg/kg时增加效果较为显著,并提高开花结果期和成熟期辣椒SPAD值,提高光合能力,而且随外源腐殖酸添加量的增加辣椒单株产量显著增加。说明,添加外源腐殖酸在一定范围内可以增加基质中腐殖酸含量,提高基质总孔隙度和通气孔隙度,促进辣椒生长发育和提高单株产量。 | 刘宇锋 罗佳 苏天明 范如芹 卢信 严少华 张振华 | 2016 | 江苏农业学报2016，32，3： | 9 |
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