采伐林隙及施肥对林下更新层闽楠生长的影响

为提高林下闽楠更新层营建成效,在福建明溪进行采伐林隙和施肥试验。结果表明,不同采伐林隙对更新层闽楠的树高、地径、冠幅和高径比有着显著性以上的影响。在促进更新层闽楠生长方面,带状间伐林隙更新效果最好,均匀间伐林隙更新次之,直接套种最差。不同施肥处理对更新层闽楠的树高、地径、冠幅和高径比有着显著性以上的影响。在促进更新层闽楠生长方面,带肥造林最好,追肥次之,不施肥(空白对照)最差。研究表明选择带状间伐林隙更新,采用大容器苗造林和带肥造林是林下闽楠更新层培育的关键技术措施。

The Effects of Logging Gaps and Fertilization on the Growth of Phoebe bournei of the Regeneration Layer

To improve the P. bournei updated regeneration layer construction results, the logging gaps and fertilization trials were conducted in Fujian Mingxi. The results showed that： different logging gaps had a significant influence on tree height, ground diameter, crown and height to diameter ratio of P. bournei seedling of regeneration layer. In promoting the growth of P. bournei, seedling of regeneration layer, strip thinning gaps update is the best, the second place is uniformly thinning gaps update, the worst is directly interplanted. Different fertilization treatment had a significant influence on tree height, ground diameter, crown and height to diameter ratio of P. bournei seedling of regeneration layer. In promoting the growth of P. bournei seedling of the regeneration layer, afforestation with fertilizers is the best, the second place is top application, the worst is CK. Using a large container seedling afforestation, afforestation with fertilizers, strip thinning gaps update are key technologies to pro- mote the growth of P. bournei seedling of reueneration laver.