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毛泡桐及其变种,作为我区乡土速生树种,分布很广,很多地方都有天然或人工栽植。由于气候因子的地带性和非地带性的变化及复杂的地形地貌的影响,导致不同分布区的毛泡桐生长和其它性状均有不同。为弄清是哪些气候因子对毛泡桐生长有显著的影响,笔者选用逐步回归分析的方法,对海拔高度,≥10℃的活动积温,一月平均温度、七月平均温度和不同年龄阶段等一些主要因子逐个引入回归方程。
Paulownia Paulownia and its variants, as my local fast-growing tree species, is widely distributed, many places have natural or artificial planting. Due to the zonal and non-zonal changes of climatic factors and the complicated topography, the growth and the other traits of P. annua in different distribution areas are different. To find out which climatic factors have a significant impact on the growth of Paulownia Paulownia, the author chose a stepwise regression analysis of the altitude, ≥ 10 ℃ activity accumulated temperature, the average temperature in January, the average temperature in July and some of the different age groups The main factors one by one into the regression equation.