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杉木在长期演化过程中,由于受自然条件和异花授粉以及人工栽培的影响,分化出许多不同特性和性状的类型。这些类型由于遗传品质有所不同,往往在个体的生长率方面表现出幅度很大的差异。这种差异在杉木选优过程中具有重要意义。为了摸索在一定条件下能使林木获得最大生长量的主要因子的相对效应,我们对杉木的优树苗、特大苗作了一些试验。同时,也调查了与速生有关的一些形态特征。一、试验情况 1972年春,在云和县景宁林业总场驮岙头林区,用优树苗、特大苗、对照苗各造了0.5
In the long-term evolution of Cunninghamia lanceolata, many different types of traits and traits have been differentiated due to natural conditions and cross-pollination and artificial cultivation. These types, due to differences in their genetic qualities, often show large differences in individual growth rates. This difference in Chinese fir selection process is of great significance. In order to explore the relative effects of the main factors that can maximize the growth of trees under certain conditions, we conducted some experiments on the superior seedlings and extra-large seedlings of Chinese fir. At the same time, some morphological features related to fast-growing were also investigated. First, the test situation In the spring of 1972, in Yunhe County Jingning forestry field pack 岙 head forest area, with excellent saplings, extra-large seedlings, control seedlings each made 0.5