马尾松不同家系子代测定林早期生长评价

通过调查分析马尾松不同家系子代测定林各家系成活率、树高、地径(胸径)及冠幅等指标的生长状况,结果表明,参试的50个家系总体表现出较为优良的生长特性;就家系间生长差异而言,不同调查年份马尾松不同家系幼苗生长表现差异较大;综合各指标,筛选出9号家系、2号家系、13号家系、15号家系、24号家系、17号家系及25号家系为优良家系。

Early Growth Evaluation on the Progeny Test Forest of Different Families of Pinus massoniana

Astract:Survival rate,height,ground diameter(DBH)and canopy of progeny test forest of different families of Pinus massoniana were investigated in this paper. The results showed that 50 families of P. massoniana were expressed the batter growth Characteristics;As far as the growth differences among different families of P. massoniana were concerned,the growth differences among different families of P. massoniana in differ?ent survey year were larger;Comprehensive of all indexes,the 9th,2nd,13th,15th,24th,17th,25th family of P. mas?soniana were the superior families.