6种杉阔混交林造林效果的调查研究

对6种杉阔混交林的调查研究结果表明:6种混交林均取得良好混交效果,促进了杉木树高、直径生长,提高了林分蓄积量,混交林分蓄积量比杉木纯林大4.3%~27.9%.鄂西红豆树、红锥、格氏栲在速生杉木的促进和竞争下,顶端优势明显,分叉少,干形通直,可培育大径材.观光木、乳源木莲分别与杉木混交,种间关系协调,生长稳定.杉檫混交林有利于檫树生长稳定,培育大径材,但应对檫树混交比例加以控制,不宜过大.6种阔叶树均为杉木优良的伴生树种,可大力推广.

Study on Afforestation Effects of Six Mixed Forest of Fir and Hardwood

The study on the effects of six mixed forest of fir and hardwood showed that the six mixed forest had all made good mixed results,such as promoting the fir tree height,diameter growth,increasing stand volume,4.3%~27.9% of mixed forests stand volume bigger than fir plantations.In the fast-growing Chinese fir in the promotion and competition,the apical dominance of Ormosia hosiei,Castanopsis hystrix,Castanopsis kawakamii,was obvious,less branching,straight stem form,able to cultivate a large diameter timber.Tsoongiodendron odorum,Manglietia yuyuanensis were mixed with fir respectively,the relation between species was coordinated,and the growth was stable.Fir and Sassafras mixed forest is conducive to the stability of the growth of Sassafras diameter wood,but Sassafras mixed ratio should be controlled,not too large.The six hardwood species were excellent fir associated species,and could be vigorously promoted.