摘要
通过对金沙江干热河谷上段乡土树种川楝1年生苗木进行5种晾晒处理试验,测定不同晾晒处理后根系的相对含水率、相对电导率、根系活力和移植后的成活率,分析探讨川楝苗木水分与苗木活力的关系。结果表明:川楝苗木活力与其苗木水分密切相关,在晾晒的过程中苗木失水使相对含水量下降,相对电导率增加,根系活力下降,最终导致苗木成活率降低和影响幼林生长情况。在川楝造林时,要做好起苗后的苗木保护工作,尤其是根系的保护,这对于维持苗木活力,提高造林成活率和保存率有重要的意义。
Studies of 5 kinds of air-drying treatments were conducted on Melia toosendan Sieb. ct Zucc. The water content, relative electric conductivity, root vigor and survival rate after planting were tested. The relationship between seedling water and seedling vigor was discussed. The result showed that the seedling vigor of Melia toosendan was related closely with its water content. The seedling dehydration caused the increase of the relative electric conductivity of root system and the decrease of the relative water content and the root vigor. Eventually, the survival rate decreased. So seedling vigor conservation of Melia toosendan is one of the key factors that affect field performance.
出处
《林业科学研究》
CSCD
北大核心
2006年第1期70-74,共5页
Forest Research
基金
云南省"十五"科技攻关项目(2001NG55)
国家"十五"科技攻关项目(2001BA510B03)子课题"退耕还林工程区干热河谷造林技术研究与示范"研究内容
关键词
金沙江干热河谷
退耕还林
川楝
晾晒
苗木活力
dry-hot valley of Jinshajiang river
forest rehabilitation
Melia toosendan
air-drying
seedling vigor
