美国柔枝松的引种育苗初步研究

Introduction and Breeding of Pinus flexilis

我国中西部地区气候干旱,城市园林绿化树种十分匮乏,引进外来适生树种来丰富城市树种资源具有重要的意义。美国柔枝松是北美地区广泛分布的松属树种,适应性强,观赏性好,对美国柔枝松的各项指标进行了测定和比较结果表明,柔枝松苗木的最佳浇水方式是每2 d浇水100mL;最好的御寒措施是铺1层草帘,然后履土厚度5 cm左右。

It has great significance to introduce alien fitness trees to enrich urban tree resources used in urban landscaping and greening in the arid and semi-arid areas in China. Pinus flexilis is widely distributed in North America, in which are one of the pine trees having strong adaptability and nice ornamental value.The introduction of this tree to Inner Mongolia was carried out through the measurement and comparison on the indicators. It was found that the best way of watering was 100 mL every two days per seedling; the best cold resistance measures was to spread a flat of grass shade, and then cover the soil in 5 cm thickness.