铅笔柏引种育苗与造林技术研究

STUDY ON TECHNIQUES OF INTRODUCTION,SEEDLING CULTIVATION AND FORESTATION OF SABINA VIGINIANA

:辽宁省章古台从 1994年开始引种铅笔柏 ,进行育苗与造林试验。试验认为 ,铅笔柏种子处理需要从 1月下旬至 4月下旬 90d左右时间 ,出芽率较高 ;而从 3月下旬至 4月中旬开始处理的种子 ,低温阶段时间短 ,出芽率低。铅笔柏越冬干梢与种源关系很大 ,美国南达科他洲种源基本不受冻害 ,而安徽种源干梢较重 ,不宜直接引种。铅笔柏在水肥条件充足条件下 ,生长很快 ,4年生苗高达 1.0 5m比樟子松大 4 9%

Experiment of introduction,seedling cultivation and forestation began in Zhanggutai,Liaoning Province in 1994.It was showed that the treatment of seeds of Sabina viginiana needed about 90 days from the last ten days of January to the last ten days of April.In this time the rate of emergence was higher;but it was lower when seed treatment began from the last ten days of May to the middle ten days of April due to lower temperature and less time. Stagheadedness of Sabina viginiana in Overwinter was relative to its provenance,that fromSorth Dakota was not liable to cold damage,but that from Anhui was of seriors stagheadeness,and no good introducing straight. Sabina viginiana grew faster in good conditions of water and fertility.Seedling height was up to 1.05m at the age of 4 years,that was 45% more than Pinus sylvestris var.mongolica