不同栽培基质下水生植物的适应性

Adaptability of water-plant cultivated in different mediums

设泥炭栽培、水苔藓栽培和地栽3种处理,对再力花、海寿花、溪荪和轮叶石胡荽在3种基质栽培处理下的适应性进行了比较.结果表明:3种处理下,再力花、海寿花和轮叶石胡荽的植株地上部、地下部生物量均以地栽处理最高,植株根冠比均以地栽处理最低;溪荪在3种处理下的适应性没有表现出明显差异;4种植物在3个处理下的根系活跃吸收面积率变化趋势相似,基本在40%～50%波动,没有明显差异;4种植物在泥炭栽培和水苔藓栽培基质下都有一定的适应性.

Treated with 3 kinds of cultivation mediums： peat, moss and soil, adaptability of Thalia dealbata, Pontederia cordata, Iris sanguinea and Hydrocotyle verticillata were compared. The results showed that： both the above part＇s and root system＇s biomass values of Thalia dealbata, Pontederia cordata and Hydrocotyle verticillata which were cultivated with soil are better than those of the other two treatments. The root/shoot ratios of plants which were cultivated in peat or moss are higher than those cultivated in soil. The adaptability of Iris sanguinea presented no obvious difference under 3 different treatments. In the 3 treatments, the variation tendency of root＇s active absorbing area＇s percentage of 4 water-plants were similar, bascially fluctuating between 40%~ 50% without obvious differences. 4 kinds of water-plants all had some adaptability cultivated whether in peat or moss mediums.