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北京市园林局十年前从西藏自治区引进的乔松种子,经东北旺苗圃精心播种和抚育,现生长良好,有的植株己达1.7～1.8米。为了使其能在露地正常生长和发育,采取单一树种密植和与云杉、白度松间作栽植进行对比;发现种植在白皮松行间的乔松生长最好。在植株较大的白皮松行间,冬季风速减弱,湿度和温度守恒,为乔松的生长创造了较好环境。据1985年5月22日观察,已有10余株开花,并发现一株受孕结果。
The Beijing Bureau of Parks and Gardens introduced from the Tibet Autonomous Region ten years ago Qiao pine seeds, carefully nursed northeast Mongolian nursery and care, now grow well, and some plants have reached 1.7 ~ 1.8 meters. In order to make it normal growth and development in the open field, take a single species of close planting and spruce, white pine intercropping for comparison; found in the white pine planted between the growth of the best. White pines in the larger plant between rows, the winter wind speed weakened, humidity and temperature conservation, growth for the Qiao Song to create a better environment. According to the observation of May 22, 1985, more than 10 plants have blossomed and a result of conception has been found.