植物营养与肥料学报2014,20(1)：186-194 Jourmal of Plant Nutrition and Fertilizer
doi: 10. 11674/zwyf. 2014. 0121
高磷对矿山生态型水蓼磷富集特性的影响
叶代桦，李廷轩”，张锡洲，郑子成，余海英
（四川农业大学资源环境学院，四川成都611130）
摘要：采用土培试验，以磷富集植物矿山生态型水募为研究对象，研究了高磷条件下（P800mg/kg）矿山生态型水募4周、8周、12周的磷富集特性，为利用矿山生态型水募提取土壤或水体中过量的磷，防治磷的非点源污染提供理论依据。结果表明，1)高磷处理下，矿山生态型水募根干重在4周、8周、12周时分别为不施磷处理的4.50、 8.12、3.17倍；茎干重分别为不施磷处理的6.83、11.47、15.14倍；叶干重分别为不施磷处理的5.77、10.49、7.11 倍。矿山生态型水募生物量在12周达到最大，增加幅度明显高于非矿山生态型。2)高磷处理下，矿山生态型水萝各器官磷含量明显高于不施磷处理，且随着生长期延长逐渐降低。矿山生态型水萝磷富集系数均大于1，且在高磷处理下高于非矿山生态型。各生长期下，矿山生态型磷迁移率均大于50%，且在高磷处理下分别为不施磷处理的 1.21、1.21、1.20倍。矿山生态型水募地下部与地上部磷积累量在12周时，分别达到9.76、105.12 mg/plant，DW，为非矿山生态型的2.29、3.29倍。3)矿L
山生态型水要根系酸性磷酸酶活性在8周时达到峰值，在4
周和8周时表现为高磷处理大于不施磷处理且显著高于非矿山生态型(P<0.05）。面植酸醇活性随生长期延长逐渐降低，在12周时表现为高磷处理大于不施磷处理且高于非矿山生态型。表明在高磷处理下，矿山生态型水萝对
磷具有较强的吸收和积累能力，是一种理想稳定的磷富集材料。关键词：生态型；生长期；磷累积；酸性磷酸酶；植酸酶
中图分类号：Q945.12;S171.4
文献标识码：A
文章编号：1008505X(2014)01-018609
EffectofhighphosphatesupplyonPaccumulationcharacteristics
ofminingecotypeofPolygonumhydropiper
YE Dai-hua, LI Ting-xuan', ZHANG Xi-zhou, ZHENG Zi-cheng, YU Hai-ying
(College of Resources and Eneironmental Science, Sichuan Agricultural Unitersity, Chengdu 611130, China)
Abstract: In order to provide a theoretical basis for extracting the excess phosphorus (P) in soil or water, preventing non-point source pollution, it was necessary to determine the P accumulation characteristics in a mining ecotype( ME)of Polygonum hydropiper screened as P enrichment plant earlier, with a nonmining ecotype( NME)as contrast. Pot experiments were carried out in a screenhouse on the farm of Sichuan Agricultural University, Sichuan province, China in 2011.The effect of P-enriched treatment （P 800 mg/kg) on the characteristics of P accumulation in the ME of P. hydropiper at different growth periods(4 weeks, 8 weeks, 12 weeks) was analysed. 1) With growth period prolonged, the biomass of root, stem and leaf in the ME of P. hydropiper ascended and reached a maximum in 12 weeks at P-enriched condition. The increment of the ME was significantly higher than that of the NME additionally. Dry weight of root of the ME with P-enriched treatment was 4. 50, 8. 12 and 3. 17 times compared with control at 4, 8 and 12 weeks respectively; and that of stem was 6. 83, 11. 47 and 15. 14 times respectively; while that of leaf was 5. 77, 10. 49 and 7. 11 times respectively. 2) Each organ of the ME with P. enriched treatment showed a significantly higher P concentration comparing with control, and the P concentration generally showed decreasing trend with the growth period prolonged. Bioaccumulation coefficient of the ME was
收稿日期：2013-03-01
接收日期：2013-06-28
基金项目：国家自然科学基金（40901138）；四川省科技支撑项目（2013NZ0044）；四川省学术和技术带头人培养资金资助项目（2012）；四川
省科技厅应用基础项目（2010JY0083）。
作者简介：叶代桦（1990—），女，四川德阳人，硕士研究生，主要从事植物营养与环境生态方面的研究。E-mail；chu.Iv@163.com
*通信作者E-mail：litinx@263.net
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