摘要
本文研究了富营养化水栽培下蓼科植物酸模叶蓼（Ｐｏｌｙｇｏｎｕｍｌａｐａｔｈｉｆｏｌｉｕｍ）、野荞麦（Ｆａｇｏｐｙｒｕｍｄｉｂｏｔｒｙｓ）和羊蹄（Ｒｕｍｅｘｊａｐｏｎｉｃｕｓ）蒸腾特点及与营养吸收的关系．结果表明，３种植物蒸腾速率对光照强度（Ｌ）和温度（Ｔ）的响应均为酸模叶蓼＞野荞麦＞羊蹄，Ｔ、Ｌ是制约酸模叶蓼、野荞麦蒸腾速率的主导性因子，Ｌ、相对湿度（ＲＨ）、风速（Ｓｗ）是制约羊蹄蒸腾速率的主导性因子；３种植物对ＮＯ３－１的去除率为酸模叶蓼＞野荞麦＞羊蹄，其排序与日蒸腾量（Ｔｒｄ）的排序一致，因此日蒸腾量（Ｔｒｄ）可作为湿地富营养化水净化选种的一个指标．
The relationship of transpiration(Tr) characters and mineral absorption of three spieces of Polygonaceae:Polygonum lapathifolium,Fagopyrum dibotrys and Rumes japonicus cultured in the eutrophic water were studied.Results showed that the responds of three plants to light(L) and Temperature(T) were P.lapathifolium>F.dibotrys>R.japonicus,T and L were the main factors controling P.lapathifolium and F.dibotrys'Tr;L,RH and Sw were the main factors controling R. japonicus'Tr.Theremoval rate of NO 3 -1 was:P.lapathifolium>F.dibotrys>R.japonicus.The order consistents with the daily transpiration intensity's(Trd's),therefore,the Trd can be used as an index of purification capability of plants chosen for purifing eutrophic water of wetlands.
出处
《杭州大学学报（自然科学版）》
CSCD
1998年第4期80-84,共5页
Journal of Hangzhou University Natural Science Edition
