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落叶松由于种的不同,其生长,抗性等亦有差异。日本落叶松(Larix leptolepis Gordon)早期引种在辽宁东部山区,优点是速生、抗早期落叶病,但材质稍差,树干基部多有弯曲;长白落叶松(Larix olgensis Henry)是辽宁东部山区生长较好的乡土树种,优点是生长快,树干通直,材质坚硬,但不抗早期落叶病。为培育速生、抗病的新品种,自1972年至1976年开展了日本落叶松与长白落叶松杂交试验,共获得两批杂交种子,并已育苗、造林,现将试验结果报告如下。
Due to the different species of larch, its growth, resistance, etc. are also different. Early introduction of Larix leptolepis Gordon in the mountainous area of eastern Liaoning has the advantages of fast growing and early deciduous disease, but its material is a little bit weaker and the base of the trunk is mostly curved. Larix olgensis Henry grows well in the eastern mountainous area of Liaoning Native species, the advantage is rapid growth, trunk straight, hard material, but not resistant to early deciduous disease. In order to cultivate a new variety of fast-growing and disease-resistant, from 1972 to 1976, a trial was conducted on the hybridization between Japanese larch and Japanese white larch. Two batches of hybrid seeds were obtained and seedlings were raised and reforested. The test results are reported as follows.