位于咸阳北部,泾河流域中上游的旬邑县,群众历来有植桐习惯。1982—1986年,我们选设了10块标准地,调查了10株解析木,并实测了有代表性的植株126个。通过调查分析,我们得出这样的结沦。1.泡桐在我县宜栽于海拔870—1400米,年均气温9—10.1℃,≥10℃积温3600—4000℃,无霜期180—200天,热量条件较为 Is located in the northern part of Xianyang, Jing River basin in the upper reaches of Xunyi County, people have always been accustomed to planting trees. In 1982-1986, we selected 10 standard plots, investigated 10 wood samples, and measured 126 representative plants. Through investigation and analysis, we come to such conclusion. 1. Paulownia should be planted in my county at an altitude of 870-1400 meters, the average annual temperature of 9-10.1 ℃, ≥ 10 ℃ accumulated temperature 3600-4000 ℃, frost-free period of 180-200 days, the heat conditions are