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(一)试验目的上高台林场种子园是生产遗传品质和播种品质较高的林木种子生产基地。目前,国内外普遍把发展种子园作为生产造林种子的重要途径。据测算,初级种子园的增产效益,用材林达到10％以上,优良无性系的增益较为显著。华北落叶松是乌盟造林的主要树种。近年来,随着造林面积的迅速扩大,而用种量也在不断地增加。为了保质保量地供应优良种子,有效地发挥落叶松生长快、材质好的特性;为初级种子园留优去劣的疏伐和建立改良代种子园提供依据。并为优树的早期鉴定提供了相关数据。
(A) the purpose of the experiment Gaotai Forest Farm seed orchard is the production of genetic quality and sowing high quality forest seed production base. At present, the development of seed orchards is generally regarded as an important way of producing afforestation seeds at home and abroad. It is estimated that the primary seed orchard yield increase, timber forest to reach more than 10%, the superior clones gain more significant. Larix principis-rupprechtii is the main tree species afforestation in Uzbekistan. In recent years, with the rapid expansion of afforestation area, the amount of seeds used is also constantly increasing. In order to supply excellent seeds in a quality and quantity manner, the larch grows fast and has good material characteristics. It provides the basis for the fine seedling of the primary seed orchard and the establishment of improved seed orchard. And provided the relevant data for the early identification of elite trees.