Influence of water logging time on the growth of Kandelia candel seedlings
Influence of water logging time on the growth of Kandelia candel seedlings
复制标题
DOI：
--
复制
发表时间：
2004
影响因子：
1.4
通讯作者：
Luzhen Chen;陈鹭真;Wq Wang;王文卿;P. Lin;林鹏
中科院分区：
文献类型：
--
作者：
Luzhen Chen;陈鹭真;Wq Wang;王文卿;P. Lin;林鹏
涝渍时间对坎德尔生长的影响对温室下模拟半日潮的人工潮汐池中栽培70 d的油菜幼苗进行了研究。以沙土为基质，采用盐度为15的人工海水进行栽培。较短的淹水时间（约2~4 h）促进了杉木幼苗的生长，而较长的淹水时间（超过8 h）或不淹水（0 h）则抑制了杉木幼苗的生长。曝气根的数量和长度随涝渍时间的增加而增加。在当前条件下，每个潮汐周期内杉木幼苗生长的最佳淹水时间约为2~4 h。与其他处理相比，砂处理（2 h）的幼苗生物量最高，下胚轴质量损失最小，培养70d后单叶面积增加，光合面积扩大。土壤处理也有类似的趋势。然而，每个潮汐周期的积水（8 h）对幼苗的正常发育至关重要。杉木幼苗耐涝性强，适当的涝渍有利于杉木幼苗的生长。
Influence of waterlogging time on the growth of Kandelia candel (L.) Druce seedlings grown for 70 d in artificial-tidal tanks simulated semidiurnal tide under greenhouse was studied. Sand and soil acted as the substrate and artificial seawater with the salinity of 15 were used in cultivation. Shorter waterlogging time (inundated for about 2~4 h) promoted the growth of K. candel seedlings, while longer time (inundated more than 8 h) or no waterlogging (0 h) inhibited their growth. The number and length of aerating roots increased with the increase of waterlogging time. In current condition, the optimal waterlogging time for the growth of K. candel seedlings was about 2~4 h in every tide cycle. Comparing with other treatments, seedlings in (2 h) sanded treatments obtained the highest biomass, made the lowest mass loss of hypocotyl and broadened the photosynthetic area by increasing area per leaf after 70d cultivation. And the soil treatments had the similar tendency. However, waterlogging for (8 h) in every tide cycle is critical for normal development of seedlings. K. candel seedlins were highly tolerant to waterlogging and a proper waterlogging was beneficial to the growth of K. candel seedlings.