新疆盐桦的引种及耐盐性研究  

Research on introduction and salt tolerance of Betula halophila

作　　者：苏卫国[1] 尹建道[2] 张富春[3] 赵玉芳[2] 丁学稳 

机构地区：[1]天津农学院园艺系,天津300384 [2]天津理工大学环境科学与安全工程学院,天津300191 [3]新疆大学生命科学与技术学院,新疆乌鲁木齐830046 [4]天津优诚国际贸易有限公司,天津300171

出　　处：《甘肃农业大学学报》2011年第5期101-105,共5页Journal of Gansu Agricultural University

基　　金：新疆维吾尔自治区重点实验室开放课题;天津市科委自然科学基金项目

摘　　要：阐述了耐盐植物盐桦的引种试验过程,通过炼苗、入土移栽等方法使其成活,然后进行耐盐试验.设定盐分浓度梯度为0‰、3‰、5‰、7‰、10‰、13‰6个水平,进行为期37d的盐胁迫试验.结果表明:当盐分浓度高于7‰时,盐桦幼苗全部死亡;当盐分浓度低于5‰时,盐桦幼苗生长良好.从而确定盐桦幼苗的耐盐极限为5‰,证实盐桦幼苗期可在5‰以下的滨海盐碱地区正常生长.但在露地栽培条件下,天津地区的夏秋季节高温多雨,给盐桦幼苗越冬带来困难,地上部分严重风干枯死,大面积栽培受到制约.Betula halophila is the secondary rare and endangered plants.In this paper we expounded its introduction proces,including the process of making it survive for refined seedlings,transplanting.Six salt gradients（0‰,3‰,5‰,7‰,10‰ and 13‰） were set for testing the salt tolerance of Betula halopila.The results showed that after 37 days,the seedlings under 7‰,10‰ and 13‰ salt treatments were all died,while those under 0‰,3‰ and 5‰ salt treatments grew well.According to the results of salt tolerance test,Betula halophila could grow well at the saline-alkali area with salt content lower than 5‰.In Tianjin City,it was difficult for Betula halophila to grow overwinter in open field,that was because of the high temperature and heavy rain in summer and autumn,so widespread cultivation would be limited.

关 键 词：盐桦 引种 耐盐植物 盐碱地绿化 

分 类 号：Q94-3[生物学—植物学]