福建南安五台山西南桦种源家系试验初报

对25个种源276个家系西南桦径、高、材积生长和耐寒性综合分析看,A、V、T、Y、K、Q、I等7个种源生长表现好,有一定的耐寒能力,是较好种源;其余种源表现一般或差,发展潜力小。每个种源根据生长表现都可选出1~2个优良家系,这些选出的优良家系不仅生长快、产量高,而且抗性强,全部没有受到寒害影响,都是较好家系,如T04、I04、A04、P25、F11、H12、V16、Y15、K17、U11等是优良家系,单株材积达0.00396~0.00864 m3。

The Growth Diffence for Different Family of Betula alnoides in Wutaishan

In this paper,some traits such as the diameter at breast height,height,volume and cold resistance were analyzed of Betula alnoides composed 25 provenances,276 families.The results showed that A,V,T,Y,K,Q,I were the excellent provenances which had great cold resistance.1~2 families were selected from every provenance which had the characters including fast-growing,high-yield and great resistance.Such families as T04,I04,A04,P25,F11,H12,V16,Y15,K17,U11were the excellent families,and the individual volume can reached 0.003 96~0.008 64 m3.