中文摘要：

为了研究芦苇不同部位在不同生育期对重金属锌的富集、转运及分布特征,利用沈阳农业大学水利综合实验基地小试装置模拟辽河口天然芦苇湿地,采用CODCr浓度分别为50,175,300mg·L-1造纸废水灌溉,分别测定不同生育期（出苗期、展叶期、拔节期、抽穗开花期和成熟期）灌溉下,芦苇根、茎、叶和穗重金属锌含量、转运系数和各部位锌所占百分含量。结果表明：不同灌溉方式下,芦苇各部位对重金属锌富集特征存在差异,根、茎和叶在各生育期灌溉下表现为300mg·L-1〉175mg·L-1〉50mg·L-1〉对照组,穗部表现为175mg·L-1〉300mg·L-1〉50mg·L-1〉对照组趋势。芦苇根部在拔节期灌溉富集重金属锌含量最高,可达成熟期最小值5.18倍;茎部在展叶期灌溉富集重金属锌含量最高,达拔节期最小值6.63倍;叶片在展叶期灌溉富集重金属锌含量最高,达成熟期最小值3.76倍;穗部成熟期富集锌含量高于抽穗开花期。对照组各生育期根部锌百分含量均在50%以上,说明对照组清水灌溉重金属锌50%限制在根部,向地上转移量少。175mg·L-1造纸废水灌溉最有利于重金属锌向地上部分转移,成熟期重金属锌转运系数最大达0.75。芦苇结穗后,穗部成为地上部分主要富集锌的部位,成熟期达根部1.111.31倍。

英文摘要：

In order to stu dy the reed of different parts in different growth period accumulation, transport and distribution characteristics of heavy metal zinc,we simulated Liao River Estuary’s natural reed wetland by comprehensively utilizing the small pilot plant in Shenyang Agricultural University’s Proving Ground, with papermaking wastewater of concentrations of CODCr are50,175,300 mg·L-1to irrigate. Zinc content, transfer coefficient and percentage content in root, stem, leaf, head of reed atdifferent growth stages（Emergence stage, Leaf-expansion stage, Jointing stage, Heading to flowering and Mature stage）were determined.The results show that under different irrigation methods,there were differences in the characteristics of heavy metal zinc accumulation in different parts of the reed,with the enrichment characteristics of 300 mg·L-1〉175 mg·L-1〉50 mg·L-1〉the control group in root, stem and leaf, and the enrichment characteristics in head of 175 mg·L-1〉300 mg·L-1〉50 mg·L-1〉the control group at different growth stages. The content of heavy metal zinc in the root of reed was maximum when irrigated duringthe jointing stage,5.18 times as much as the Minimum in mature stage;the contents of zinc was maximum in the stem when irrigated at Leaf expansion stage, 6.63 times as much as the Minimum in jointing stage;the contents of zinc was maximum in the Leaf when irrigated at leaf expanding stage, 3.76 times as much as the Minimum at mature stage;the zinc contentin the head at mature stage was higher than that in heading to flowering.Control the growth period the roots of zinc percentage accounted for more than50%, shows that the control water irrigation zinc 50% limit of heavy metals in the roots, transfer to the ground.The papermaking wastewater concentration of 175 mg·L-1was conducive to the transfer of zinc to the aboveground part, withtransfer coefficient of heavy metal zinc at mature stage 0.75,After reed Headingthe headwas the main part of zinc enrichment, 1.11-1.31 times as much as that in ro