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华北落叶松(Larix Principis-rupprrechtii Mayr)是华北地区特产树种。具有生长快,材质好和树形美等特点,是优良的用材和观赏树种之一。华北落叶松自六十年代引种于我区六盘山林区,至今一直表现很好。现有人工林约4万多亩,形成了一整套育苗、造林和管护等技术。生长量几乎超过当地的山杨、白桦和辽东栎等树种的一倍。现已成为六盘山地区主要造林树种之一。为了进一步提高华北
Larix Principis-rupprrechtii Mayr is a endemic tree species in North China. With fast growth, good material and the United States and other characteristics of the tree, is an excellent timber and ornamental species. Larix principis-rupprechtii was introduced to Liupanshan forest area in our country since the 1960s and has performed well so far. The existing plantation of about 40,000 mu, forming a set of nursery, afforestation and management and other technologies. The amount of growth almost surpasses that of poplar, birch and quercus liaotungensis. Now it has become one of the main afforestation species in Liupan Mountain. In order to further improve North China