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超级苗木是苗圃中生长特别突出的苗木。超级苗木的选择,是决定杉木早期优势遗传的一种实验方法。试验表明,应用超级苗木造林,在同样立地条件和经营管理措施下,比一般同龄林分增产2—3成。同时,超级苗木的选择也是研究杉木早期选种的一种有效途径。因此,在苗期按速生性选择苗木,对于林木良种选育有很重要的现实意义。选择的方法和步骤及其造林效果如下:
Super seedlings are nursery growth particularly prominent seedlings. The choice of super seedlings is an experimental method of determining the genetic predisposition of early stage of Chinese fir. Tests show that the application of super seedling afforestation, in the same site conditions and management measures, an increase of 2-3% than the average peer yield. At the same time, the choice of super seedlings is also an effective way to study the early selection of Chinese fir. Therefore, the rapid selection of seedlings at seedling stage, for seed selection of forest has very important practical significance. The method and procedure of selection and their afforestation effect are as follows: