摘要
历经3 a的试验示范,研究出红油椿的扦插育苗技术、容器实生苗育苗技术,年平均育苗量30万株,且椿苗粗壮、成活率高,解决了红油椿棚室栽培批量用苗的问题。在无性繁殖的3种方法中,分根法效果最好,其次是插根法和插枝法,成活率分别为95%、87%和81%。利用插根法进行繁殖时选择粗度0.5-0.5 cm、长度15-20 cm的根为宜,利用插枝法进行繁殖时选择粗度1.0-2.0 cm、长度15-20 cm的枝条为宜,且长插穗的扦插效果优于短插穗,粗插穗的扦插效果优于细插穗。确定了温室营养钵实生苗育苗的方法与技术：凉水浸种24 h,25℃左右催芽,保持温室内温度白天20-22℃、夜间15℃左右,6-8片真叶时露地定植12万株/hm^2,6-7月以促为主,6月下旬苗高60-100 cm时摘心,9月后以控为主。
After three years of experiment and demonstration for this project,cutting seedlings technology and container seeding technology of red oil toona were studied.The annual average of 300 000 strains seeded.Thick and survival rate of red oil toona sprouts and the quantity of red oil toona sprouts for greenhouse cultivation were guaranteed.In the three methods of asexual reproduction,the split-root method is best,followed by the plug root method,again cutting method,the survival rates were respectively 95%,87%,81%.Insert root method to choose 0.5-2.5 cm diameter and 15-20 cm length root is the most appropriate.Cutting method to choose the 1.0-2.0 cm diameter and 15-20 cm length branch is the most appropriate.The long cuttings are better than the short cuttings.The thick cuttings are better than the thin cuttings. Methods and techniques of nursing seedlings in nutrition bowl are determined.Seeds of red oil toona soak in cold water 24 h and sprout around 25 ℃. Greenhouse temperature is 20-22 ℃ during the day and15 ℃ around at night. Seedling is planted when it has 6-8 true leaves.Planting density in open field is 120 000 strains/hm^2. Seedling is promoted to grow mainly during June to July. Pinching when seedling has 60-100 cm high in late June.Seedling is controlled to grow mainly after September.
出处
《河北农业科学》
2015年第6期52-55,100,共5页
Journal of Hebei Agricultural Sciences
基金
石家庄市科技支撑计划项目(12152048A)
关键词
红油椿
苗木繁育
插根法
插枝法
分根法
实生苗
Red oil toona
Seedling breeding
Insert root method
Shoot cutting method
Split-root method
Seedlings
