章古台欧洲黑松引种育苗试验

几年的引种育苗试验表明，在干旱寒冷的章古台引种欧洲黑松（Ｐ．ｎｉｇｒａ）首要取决于其一年生苗木能否正常越冬。Ｐ．ｎｉｇｒａｖａｒｃｏｒｓｉｃａｎａ、Ｐ．ｎｉｇｒａｖａｒｃａｌａｂｒｉｃａ和Ｐ．ｎｉｇｒａｖａｒＳａｌｚｍａｎ抗寒性较差，一年生苗越冬后不能存活。Ｐ．ｎｉｇｒａｖａｒａｕｓｔｒｉａｃａ较抗寒，一年生苗越冬保存率可达９６％，二年生苗木全部能安全越冬，是最有希望的变种。欧洲黑松育苗技术简便，可参照樟子松育苗方法进行。

TREE-INTRODUCTION OF PINUS NIGRATO ZHANGUTAI,LIAONING,PRC AT NURSERY STAGE

The results of experimentation in nursery for several yearsshowed that the tree-introduction of pinus nigra to cold and dry zhanggutai,liaoning,PRC was primarily related to the over-wintering capacity of yearlings.The Yearlings of P.nigra var corsicana, P.nigra var calabrica and P.nigra var salzman could not survive winter. P.nigra var austriaca was mor cold-resistant that as high as 96% of its yearlings survived winter,and no problem at all in over-wintering of 2-year-old seedlings.It is the most hopeful variety for the area.The seedlings of P.nigra could be simply grown with reference to that of P.sylvestris var mongolica. ;