水培芹菜的植物学特征及环境效益分析

Analysis on Botany Characteristics and Environment Benefits for Water-cultured Oenanthe Javanica

通过水面浮岛栽培试验,研究了鄂水芹一号植株的生长特征、植物量的分布结构,及其在富营养化水体中对氮、磷的吸收情况。研究成果如下:水芹植株的平均鲜量35.22g,其中水上部分占77%,水下部分占23%,生物量分布主要集中在水上部分;其对N,P的直接吸收分别可以达到13.05～33.14kg/(hm2.a)和5.62～6.67kg/(hm2.a)。结果表明,水芹是一种适合在低温的情况下进行水培的植物,并对富营养化水体有良好的净化效果。

Experiments on oenanthe javanicas planted in floating-beds were conducted to study distribution of biomass and absorbing contents of N and P from eutrophic water body. The average fresh weight was 35.22 g per plant, with the above-water part counted 77 % and the under-water part 23 %. The waterborne part played a key role in the biomass structure. The directly absorbing contents of N and P were 13.05 -33. i4 kg/（hrn2＂ a） and 5.62 - 6.67 kg/（hm2＂ a）, respectively. The results showed that the oenanthe javanica grows well under the lower temperature and is good for water purification on the eutrophic water body.