临夏州引种柳树良种生长规律研究

A Study on the Growth Regular of an Improued Variety of Salix in linxia

通过对 1 1年生的柳树良种试验林的测定 ,基本摸清了其生长规律 :1 1～ 1 0龄为其速生期 ;2苏柳较疆柳对环境的变化反应敏感 ;3柳树良种的 f1 .3值为 0 .44～ 0 .50 ,r值为1 .40～ 2 .1 2 ,其生长量与 f1 .3呈负相关 ,与 r值呈正相关 ;4J1 72柳较其他良种对林分环境的适应性更强 ,大部分柳树良种不宜片状栽培 ,应以行状。

Through Investigting 5 strins of 11 year old Salix,the result indicates:1.The fast growth period is at 0 10 age;2.J172, J194 and J369 are more senstitvely than S.babylonica and S.soongarica to changing environmental changong;3.When the f 1.3 =0.44～0.50,r=1.40～2.12, the growth was negatively related to f 1.3 , but positively related to r.