晾晒对毛红椿苗木活力的影响

Effect of Air-drying on Seedling Vigor of Toona ciliata var. pubescens

通过对毛红椿1年生苗木进行5种晾晒处理试验,测定不同晾晒处理时根系含水量、相对电导率、根系活力和栽植后的成活率,分析探讨毛红椿苗木水分与苗木活力的关系。结果表明:毛红椿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。所以在毛红椿造林时,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、提高造林成活率有重要的意义。

Studies of 5 kinds of air-drying were conducted on Toona ciliata var. pubescens.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 T. ciliata var. pubescens was related closely with its seedling water, seedling dehydration caused the decreas of the ralative water content, the relative electric conductivity of root department increased , the root vigor dropped, eventually, the survival rate decreased. So seedling vigor conservation of T. ciliata var. pubescens is one of the key factors that affect field performance.