Research Progress in Cultivation of Large-diameter Timber Tree of Chinese Fir
Chinese fir is a tree species that is used for afforestation,constituting the largest planted area in China and occupying an important position in China's forestry industry.With the increasing market demand for large-diameter timber of Chinese fir,the research on high-efficiency cultivation of large-diameter timber trees of Chinese fir has become a hotspot,consulting in a large number of results.This paper reviews the research progress in the cultivation of large-diameter Chinese fir trees from the aspects of genetic control,site control and density control,discusses the technical system for the cultivation,and identifies the existing problems in the current research in this regard.Suggestions are put forward to provide science evidences for the cultivation of large-diameter Chinese fir tree,i.e.,strengthening the selection of varieties for large-diameter tree cultivation,conducting long-term positioning observation of the formation mechanism of high-generation and well-bred large-diameter trees,enhancing the research on the assembling of the cultivation technology,and compiling the site index table of large-diameter trees in long-rotation period.
Chinese firlarge diameter woodgenetic controlsite controldensity control