湘南丘陵地桉树纸浆林栽培模式研究

Study on the plant model of the Eucalyptus pulp forest in the hills of southern Hunan Province

桉树已成为湖南湘南地区栽培的主要纸浆林树种。通过对桉树肥料、整地、密度等分析,得出湘南地区桉树集约经营的主要栽培模式:使用较耐寒的桉树品种(赤桉、邓恩桉、柳桉)的优良无性系或种源,15～20cm的容器苗,整地方式为人工带垦、中穴或机耕,每穴施放430g磷肥作为底肥,其间追施尿素65g、氯化钾肥25g,或追加氯化钾50g,或追加尿素130g,造林密度为1667～2505株/hm2,轮伐期6～8年,栽植后要连续抚育3年,每年1～2次,主要是松土、扩穴、培蔸、施肥、控制杂草、防治病虫害。

The Eucalyptus was the main pulp forest species in southern Hunan.Based on the effects of fertilizer, soil preparation and density, the main plant model for Eucalyptus intensive farming in southern of Hunan was pointed out as following: Use of anti-cold Eucalyptus species clones or seed recourse as. 15 to 20 cm test-tube seedlings.The soil preparation models were reclamation, middle-dig, and mechanised plow.Fertilizer application with 430?g P in every hole, urea 65?g and KCl_2 25?g,or KCl_2 50?g,or urea 130?g.The afforestation density was 1?667 to (2?505) plant per hm^2, withg a rotation of 6 to 8 years.Tending 3 years after planting and twice during those years.Tending included loosening the soil, digging the hole, cultural packet, fertilizer, controlling the weeds, prevention and dontrol of plant diseases and elimination of pests.