【摘要】 以密植超短轮伐为主的栽培经营试验，在全国１２个省（区）、市建立了１３个试区，２６个试验点，共分５种自然类型。每公顷的造林密度一般为５０００～１００００株；沿海试区１５０００～２００００株。轮伐周期１～２ａ；北方局部地区为３～５ａ。试验林的生物量较一般薪炭林提高３～５倍；西北地区为５～８ｔ／（ｈｍ２·ａ）；东北、华北７～１０ｔ／（ｈｍ２·ａ）；华中地区６～２０ｔ／（ｈｍ２·ａ）；西南１０～２０ｔ／（ｈｍ２·ａ）；南部沿海２０～５０ｔ／（ｈｍ２·ａ）。同时从全国传统薪炭林树种和乡土树种中，筛选出６０个优良树种，供各地选用。更多还原

【Abstract】 During the period of the seventh five year plan,an experiment on the silvicul- ture and management of dense plantation and extra-short rotation has been conducted in 26 experimental sites belonging to 13 experimental regions covering 5 natural ecological re-gions,12 Provinces of China.The density of fuelwood stand is 5 000～10 000 stems/hm2 generally,15 000～20 000stems/hm2 in the southern coastal regions.The rotation is 1～2a,3～5 a in partial region ofNorth China.The biomass yield of experimental forest are 3～5 times more than that of theordinary fuelwood stand,5～8t/(hm2· a)in northwest China experimental region,7～10t/(hm2·a)in northeast and North China,6～20t/(hm2·a)in Central China,10～20t/(hm2·a)in Southwest China, 20～25t/(hm2·a)in Southeast coastal region.At the same time,60 fine fuelwood species have been screened out from the traditional fuelwood species and na-tive forest species all over China.更多还原