Four groups of field experiments including REEs foliage dressing, soil dressing, triple amounts of soil dressing and control were carried out. Contents of REEs in wheat in different growing stages were measured by ICP...Four groups of field experiments including REEs foliage dressing, soil dressing, triple amounts of soil dressing and control were carried out. Contents of REEs in wheat in different growing stages were measured by ICP-MS. The results show that REEs amount in leaves increases significantly with foliage dressing in jointing stage, in addition to REEs accumulation with soil dressing method in jointing stage. Either using foliage dressing or soil dressing, there is no significant accumulation in mature stage. Comparison of the two methods shows that lower amount of REEs with foliage dressing can be highly absorbed in jointing stage.展开更多
由深路堑土石方开挖而形成的高陡光滑岩质边坡往往具有很大安全隐患和环境影响,需要采用有效的绿化防护技术以增强其稳定性和发挥生态功能。结合某高速公路扩建工程施工,从土工材料与植物生态条的结合、植物品种的选择与组合、以及土基...由深路堑土石方开挖而形成的高陡光滑岩质边坡往往具有很大安全隐患和环境影响,需要采用有效的绿化防护技术以增强其稳定性和发挥生态功能。结合某高速公路扩建工程施工,从土工材料与植物生态条的结合、植物品种的选择与组合、以及土基加固等方面,探讨了适用于陡峭且光滑岩质边坡的绿化防护关键技术,包括TBS(turf base seeding)植草(灌)防护和喷播养护策略,增加客土厚度和采用双层TBS镀锌网片加固等。实践表明,上述措施能显著提升植被的绿化成活率和边坡的稳定性。研究结果可为类似地质环境下的绿化防护工程的设计与施工提供有价值的参考。展开更多
文摘Four groups of field experiments including REEs foliage dressing, soil dressing, triple amounts of soil dressing and control were carried out. Contents of REEs in wheat in different growing stages were measured by ICP-MS. The results show that REEs amount in leaves increases significantly with foliage dressing in jointing stage, in addition to REEs accumulation with soil dressing method in jointing stage. Either using foliage dressing or soil dressing, there is no significant accumulation in mature stage. Comparison of the two methods shows that lower amount of REEs with foliage dressing can be highly absorbed in jointing stage.
文摘由深路堑土石方开挖而形成的高陡光滑岩质边坡往往具有很大安全隐患和环境影响,需要采用有效的绿化防护技术以增强其稳定性和发挥生态功能。结合某高速公路扩建工程施工,从土工材料与植物生态条的结合、植物品种的选择与组合、以及土基加固等方面,探讨了适用于陡峭且光滑岩质边坡的绿化防护关键技术,包括TBS(turf base seeding)植草(灌)防护和喷播养护策略,增加客土厚度和采用双层TBS镀锌网片加固等。实践表明,上述措施能显著提升植被的绿化成活率和边坡的稳定性。研究结果可为类似地质环境下的绿化防护工程的设计与施工提供有价值的参考。
