| Effects of N fertilization on growth, mineral ash absorption and accumulation of Salicornia europaea L. |
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| DOI：10.7606/j.issn.1000-7601.2011.01.19 |
| Key Words: Salicornia europaea L. nitrogen fertilizer nutrition concentration mineral ash concentration improvement of saline soil |
| Author Name | Affiliation | | WANG Jieping | Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China
Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China | | TIAN Changyan | Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China
Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China |
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| Abstract: |
| Research was carried out in the hope of restoring the saline land rapidly and effectively through improving halophytes’biomass and performance by applying nitr
ogen fertilizer in saline areas. Effects of various levels of nitrogen fertilization (0, 75, 150 and 225 kg/hm2) on growth, mineral ash absorption and accumulation of Salicornia europaea L. were studied through complete randomized block design under the saline field condition in Xinjiang. The results indicated that the aerial biomass, the root dry weight, the seed yield and the mineral ash cumulant increased significantly with increasing N levels. Among different nitrog
en treatments, the highest ash cumulant absorbed by Salicornia europaea L. was N3(225 kg/hm2), with 8 435.06 kg/hm2 being the figure recorded, which was 4.28 times of CK. Meanwhile, N3(225 kg/hm2) also claimed the highest aerial biomass, root dry weight and seed yield which were 4.02, 4.72 and 2.84 times of CK, respectively. Furthermore, compared with CK, applying nitrogen can improve nitrogen concentration in shoot and seed of Salicornia europaea significantly when nitrogen level was up to 225 kg/hm2, however, no significant difference in nitrogen concentration i
n stem and phosphorus concentration in all the three plant organs listed above were noted among different nitrogen levels. The effect of nitrogen on phosphorus
concentration in Salicornia europaea is varying which mainly depends on the specific part. Although mineral ash concentration in assimilation shoot and stem were increased to some extent by nitrogen applicati
on, yet the difference was not significant. The results suggest that under the saline land condition, nitrogen can significantly promote Salicornia europaea
’s growth and mineral ash absorption and, as a result, strengthening nitrogen management is very important in the process of saline land restoration by planting Salicornia europaea. |
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