摘要
不同伐根高度对巨尾桉萌芽更新的影响研究表明 :伐根高度在 - 5～ 2 0cm范围内 ,对萌芽能力、萌芽林生长及林分生物量的影响差异不显著 ;但降低伐根高度 ,能促进新根系形成 ,有利于继代经营。综合考虑各种因素 ,伐根高度以 5cm为宜。巨尾桉萌芽林长势与一代林分相当 ,但营林成本明显下降。
Through studying of the effect of different cutting root height on the sprouting regeneration of E.grandis×E.urophylla,this paper shows that the difference of the effect of cutting rot height from-5 to 20 cm on the ability of sprouting,sprouting forest growing and biomass of forest stand is not obvious,but decreasing cutting root height can promote the formation of new root system and benefit step_generation management.Considering all kinds of factors synthetically,the authors think suitable cutting root height is 5 cm.The sprouting forest of E.grandis×E.urophylla are growing as well as the first generation forest stand does,but the cost of management declines obviously.
出处
《森林工程》
北大核心
2003年第1期11-12,4,共3页
Forest Engineering
