摘要
对华北落叶松切根、换床苗与留床苗的根系与生长研究表明,切根苗的根系发达,吸收土壤中水分、养分能力强,造林效果好,在林区值得推广。每年可进行1次切根,早春土壤化冻达15 cm左右时即可作业,以切根深度10 cm、苗木密度230株/m2为宜。
The study on the root system and growth of root-cut seedling, bed-changed seedling and bedfixed seedling of Larix principis-rupprechtii was conducted. The result indicated that the root-cut seedling has strong root system and big capacity of absorbing soil water and nutrient and good afforestation effect. It can make root-cut 1 time every year and can conduct it when thawy soil depth reaches 15 cm in early spring. The root-cut depth of 10 cm and the seedling density of 230/m^2 were fitting.
出处
《甘肃林业科技》
2006年第2期35-38,53,共5页
Journal of Gansu Forestry Science and Technology
关键词
华北落叶松
切根育苗
换床
苗期试验
Larix principis-rupprechtii
root-cut breeding
bed changing
trial on seedling stage
