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铅笔柏(Juniperus Virginiana)原产北美,又名红柏或北美圆柏,北京市九龙山林场1975年育苗,三年后在京西四涧沟、颐和园进行栽培试验,现在生长良好。现将培育管理及山地栽植情况简介于后: 一、育苗(一) 种子繁殖1.种子处理:从山东泰安引进铅笔柏果实1,100克,出种率16%,种子纯度96%,千粒重6.5克;由于铅笔柏种子发芽较困难,往往播种后需2-3年才能发芽。种子具有不透水的
Juniperus virginiana native to North America, also known as red cypress or North American juniper, Jiulongshan Forest Farm in Beijing in 1975 nursery, three years later in the West Beijing Sijiangou, Summer Palace for cultivation tests, and now well-grown. Breeding and management of the current situation is to introduce a mountain after: First, nursery seed breeding (1) seed treatment: seed from the introduction of Tai’an, Shandong pencil cypress 1, 100 grams, the seed rate of 16%, 96% seed purity, 1000 grain weight 6.5 grams; As Penaeus cypress seed germination more difficult, often 2-3 days after sowing to sprout. Seeds are impermeable