基于蓄水渗膜释水的土壤湿度对造林苗木的成活和生长的影响机制

项目名称： 基于蓄水渗膜释水的土壤湿度对造林苗木的成活和生长的影响机制

项目编号： No.31070632

项目类型： 面上项目

立项/批准年度： 2011

项目学科： 医药、卫生

项目作者： 李根柱

作者单位： 大连大学

项目金额： 8万元

中文摘要： 水分是干旱半干旱地区重要的限制因子，合理的水分条件是植被恢复的首要条件。蓄水渗膜是为解决干旱区造林成活困难而研制的一种生态功能复合材料，其由涂层导水纤维与环境友好成膜材料制备而成，经包装水后直接置于树苗根部，由导水纤维逐渐释放水分子从而解决干旱区造林苗木所需水分问题。本项目通过对涂层导水纤维材料的组分与水分性态试验、不同组分涂层导水纤维制备蓄水渗膜后包装水的造林苗木盆栽生长试验等手段，研究了7种造林苗木的生长与蓄水渗膜供水的关系，结果表明，合理地选择使用涂层纤维蓄水渗膜造林，苗木的成活率能大幅提高且生长状况良好，与正常浇水对照没有显著差异。本研究一方面丰富了改变土壤水分、保证树苗成活的相关理论体系，另一方面为生态造林、防治荒漠化提供了一种新技术，从而进一步推动生态植被的恢复。

中文关键词： 蓄水渗膜；土壤湿度；涂层纤维；造林

英文摘要： This project presents a functional composite named Water Storage and Releasing Film (WSRF)to provide water to the plants in the arid-semiarid region when there are lack of water.It consists of one kind of natual fiber coated with water conducting composite and the enviromentally friendly film. Water can be packaged in WSRF. They will be conducted by the composite coat along the fiber to the soil after the packaged WSRF are put around the root of the plant. With the purpose of research seven kinds of relationships between the survival of plants and the costitute,the water conducting performance of different constitute of samples will be measured, the water conducting mechanism will be analyzed based on the experimental data.The results show that the saplings'survival rate have a big increase and the growth situation is well. There is no differences when compare with normal watering .The results will be of great significant to the ecological restoration in these area.

英文关键词： water storage and releasing film; soil moisture; coated fiber; afforestation