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杉木是我国南方重要的速生用材树种.由于分布区内气候、地貌、土壤等不同生态条件的影响及地理、生殖隔离等原因,致使在长期系统发育过程中形成了许多具有遗传差异的种群.为了发掘利用杉木地理生态遗传差异,以便为当地栽杉选择适宜的优良种源、并科学地划定调种范围提供依据,近年来,我们对南方10省、区20个产地杉木种源进行了育苗造林试验,取得了良好的结果.试验材料和方法试验材料来自南方10省、区重点产杉区20个产地母树林中一般正常结实的种子.地理分布范围为北纬22°10′—31°55′,东经102°08′—118°21′.海拔高变幅为190—1900米.其中有4个南亚热带种源,11个中亚热带种源,4个北亚热带种源,1个西南高原季风亚热带特殊气候生态型种源.对照为句容种源.
Cunninghamia lanceolata is one of the most important species of fast-growing timber in southern China, due to the influence of different ecological conditions, such as climate, geomorphology and soil in the distribution area, as well as geographical and reproductive isolation, etc., many genetically diverse populations are formed during long- In the recent years, we have conducted seed breeding of 20 provenance sources of Chinese fir in 10 provinces and districts in the south of China. Afforestation experiment, and achieved good results.Experimental materials and methods The test materials from the 10 provinces in the south, the area of the main fir-fir area 20 mother-of-seed forest generally normal seed, the geographical distribution of north latitude 22 ° 10’-31 ° 55 ’Longitude 102 ° 08’-118 ° 21’ elevation range of 190-1900 meters, of which there are four south subtropical provenance, 11 in the subtropical provenance, 4 North subtropical provenance, a Southwest Plateau Monsoon subtropical special climate ecotypes provenances.