Development of P-Hyperaccumulator Plant Strategies to Remediate Soils with Excess P Concentrations
Development of P-Hyperaccumulator Plant Strategies to Remediate Soils with Excess P Concentrations
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DOI：
10.1080/0735-260291044331
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发表时间：
2002-09
影响因子：
6.9
通讯作者：
J. Novak;A. Chan
中科院分区：
文献类型：
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作者：
J. Novak;A. Chan
BP Amoco公司全球环境管理业务部David Tsao博士，全球环境管理业务部，W.Warrenville路150W.，邮编H-7，IL 60563。美国畜牧业已经发展到将大量动物限制在许多州集中地区的几个农场。向更少、更大规模经营的趋势，再加上高度集约化的生产方法，导致粪便养分在相对较小的地理区域内更加集中。这些地区的研究人员报告说，粪便生产对磷(P)的贡献超过了现有农田所能吸收的磷。肥料养分的过量使用和许多作物对磷的去除效率低经常被认为是土壤磷过量积累的原因。我们认为，通过营养管理可以从土壤中去除更多的磷。利用磷超积累植物或通过传统育种和转基因技术提高其磷吸收特性的种植植物可以降低土壤磷浓度。在这种情况下，我们确定植物的属性(根构型、有机酸分泌等)。使用这两种技术可能会改善这一点。
Dr. David Tsao, Hydrocarbon and Environmental Management Group, Global Envionmental Management Business Unit, BP Amoco Corporation, 150 W. Warrenville Rd., Mail Code H-7, Naperville, IL 60563 The U.S. livestock industry has evolved to confine a large number of animals on a few farms in concentrated areas in many states. The trend to fewer, larger operations coupled with highly intensive production methods has resulted in more concentration of manure nutrients within relatively small geographic areas. Researchers in these areas have reported that manure production is contributing more phosphorus (P) than available cropland can assimilate. Overapplication of manure nutrients combined with low P removal rates by many crops is frequently cited as a reason for the accumulation of excess soil P. We propose that higher amounts of soil P can be removed from soil using vegetative management. Soil P concentration can be reduced in fields with excess levels by using P-hyperaccumulator plants or growing plants that have been modified to increase their P-uptake characteristics through traditional breeding and transgenic techniques. In this context, we identify plant properties (root architecture, secretion of organic acids, etc.) that may be improved using these two techniques.