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我国落叶松属有11个种,广泛分布在北纬27°50′～53°和东经86°～134°之间的山区和亚高山区,由于这一广大区域内的气候因子综合有极大的多样性,形成了生物学特性各不相同的,各有一定自然分布区的种,这些种一般都不同地分布,而有明显的替代现象.这种分布形式,充分反应着各种的遗传特异性。种子是种的特性的集中点,为此,研究各种落叶松种子的生物学,对认识各种的生态需要,发展这一速生针叶树种的生产有重要意义。但过去还没有有关对这些种的种子生物学比较研究的报道,为此,我们在“六五”期间国家攻关项目中,结合我国落叶松种和
There are 11 species of larch in China. They are widely distributed in mountainous and sub-high mountain areas between latitudes 27 ° 50 ’~ 53 ° North and longitudes 86 ° ~ 134 ° East. Due to the comprehensive integration of climatic factors in this vast region Diversity, the formation of a biological characteristics of different, each have a certain natural distribution of species, these species are generally distributed differently, but there is a clear alternative phenomenon.This distribution, the full response to a variety of genetic specific Sex. Seeds are the focal point of species characteristics. Therefore, studying the biology of various larch seeds is of great significance for understanding various ecological needs and developing the production of this fast-growing conifer species. However, in the past, there have been no reports of comparative studies on the seed biology of these species. Therefore, in the national research project during the “6th Five-Year Plan” period, in combination with the species of larch in China