论文部分内容阅读
公路苗圃是公路绿化苗木的主要生产基地。苗圃的苗木质量,直接影响公路绿化成活率,苗木的质量取决于苗圃的管理,而苗圃的管理又以夏季最为重要。夏季是苗木生长最旺盛的季节。从苗木生长阶段分,以伏雨为界,可分为前期和后期两个生长阶段,一般前期生长量大或苗木茁壮,秋后可得优质壮苗,反之,前期生长不良,则会造成较多的不合格苗木或后期徒长现象,影响造林成活率。因此,做好苗圃的夏季管理,尤其是前期管理极为重要。通过我省实践,在育苗过程中,应着重掌握以下管理技术要点: 1.幼苗生长初期,苗木地上部分和根系生长开始稳定,根系分布比较浅,如土壤水分
Highway Nursery is the main production base of green road seedlings. Nursery nursery stock quality, a direct impact on the survival rate of road afforestation, seedling quality depends on the nursery management, nursery management and the most important summer. Summer season is the most vigorous growth of seedlings. From the seedling growth stage, with volt rain as the boundary, can be divided into two stages of the early and late growth stage, the general early growth or seedling robust, autumn can get good quality seedlings, on the contrary, poor growth in the early, will result in more More unqualified nursery stock or the phenomenon of late growth, affecting the survival rate of afforestation. Therefore, it is very important to do the summer management of the nursery especially the preliminary management. Through the practice in our province, in the process of nursery, should focus on the following management techniques: 1. The seedling growth stage, seedling shoots and root growth began to stabilize, the root system is relatively shallow, such as soil moisture