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短轮伐期的研究工作,首先由美国杨格于1944年提出,1970年美国、加拿大开始杨树短轮伐期试验,70年代中后期又有许多国家开展这项工作。我国于1978年在河北省邯郸地区漳河林场开始探索该项工作,从80年代开始各省(区)建立速生丰产林基地,1989年全国营造速生丰产林33万ha。我们于1978年在漳河林场进行了沙兰杨短、中短两种轮伐期试验。一、试验区自然概况河北省漳河林场位于北纬36°19′,东经114°24′,属暖温带大陆性半湿润季风气候区,
Short rotation of the research work, first by the United States Yang Ge made in 1944, the United States in 1970, Canada began the short rotation of poplar test, the mid-to-late 1970s and many countries to carry out this work. In 1978, China started to explore this work in Zhanghe Forest Farm in Handan, Hebei Province. Since the 1980s, fast-growing and high-yield forest base has been established in all provinces and autonomous regions. In 1989, 330,000 ha of fast-growing and high-yield forest was established nationwide. In 1978, we carried out Shalanshan short, short and medium rotation trials in Zhanghe Forest Farm. First, the natural overview of the pilot area Zhanghe Forestry Center in Hebei Province is located 36 ° 19 ’north latitude, longitude 114 ° 24’ east longitude, is a warm temperate continental semi-humid monsoon climate zone,