安庆师范学院学报（自然科学版）2016，Vol.22Issue(4)：116-120,5.DOI:10.13757/j.cnki.cn34-1150/n.2016.04.029
蕹菜对富营养化水体的净化及湿地工程示范研究
Restoration of Eutrophic Water by Ipomoea Aquatic and Demonstration Study in Wetland
摘要
Abstract
To investigate the growth of habitus, ability of nutrient removal, and prospect for large-scale application of planting water spinach (ipomoea aquatic) by floating beds in large acreage water body, the study compares the biomass, total nitrogen (TN) and total phosphorus (TP) content of water spinach, grown in soil and eutrophic water body, and further enlarges the demonstration in Baihe wetland park at Chichou, Anhui. It is found that during the same growing period, the biomass of water spinach grown in eutrophic water could reach on average 1.6 kg per plant with a length of 5 m, in great contrast to the plants grown in soil. The great growing potential of water spinach in eutrophic water is in agreement to its particularly prosperous root system, which takes 35%of the fresh weight of a single plant. TN and TP are separately measured for root, stem and leaf parts, and the ratios of TP/TN in each part for plants grown in eutrophic water are 3.26, 3.65 and 1.51 times of plants grown in soil. High biomass and phosphorus absorption potential are important features for its application in restoration of eutrophic water. Demonstration field study in Baihe wetland park showes a yield of 9.3 t per 667 m2, and TN of the water body is decreased from 3.624 mg·L-1 to 2.181 mg·L-1, TP from 0.187 mg·L-1 to 0.144 mg·L-1. The work provids a successful example of using water vegetables, at large-scale, for restoration of water nitrification. The strategy of producing edible vegetables along with bio-restoration of eutrophic water body and important aspects for future research are discussed.关键词
富营养化水体治理/水蕹菜/浮床培植/总氮总磷Key words
restoration of eutrophicated water body/construction of wetland along with vegetable production/Ipomoea aquatic/floating beds/TN and TP分类
环境科学引用本文复制引用
李璇,冯慧云,徐衡,余增亮,李伟,杜海明,周澳..蕹菜对富营养化水体的净化及湿地工程示范研究[J].安庆师范学院学报（自然科学版）,2016,22(4):116-120,5.基金项目
安徽省科技攻关项目（12010402102）和国家自然科学基金（11575234）。 （）
