论文部分内容阅读
无性繁殖既能长期保持母树特性,又是在短时期内取得良种繁育的主要手段.为了早日实现白榆良种化,在白榆优良单株子代测定的同时,研究提高苗木成活率的无性繁殖方法更为迫切.白榆无性繁殖方法很多,如扦插.嫁接、插根、埋条等.现将这几种方法试验情况介绍如下:一、扦插试验几年来,我们进行的插条试验用的是苗
Asexual reproduction can not only maintain the characteristics of the mother tree for a long time, but also get the main means of breeding in a short time.In order to realize the elm seedling as soon as possible, we studied the improvement of survival rate of asexual seedling Method is more urgent.Elementous asexual propagation methods are many, such as cutting.Crafting, inserting root, buried strip, etc .. Now these kinds of methods test situation are introduced as follows: First, cutting test In recent years, we conducted the test Is the seedling