包头地区丁香属植物开花习性的调查统计分析

丁香是包头的一种重要绿化树种,其开花习性除因每年春季气候不同而有差异之外,也因品种的不同而不尽相同。对14个品种丁香的开花期经过三个生长季节的调查和统计,不同种类的丁香的适应性差距还是很大的,羽叶丁香和花叶丁香的表现最不好,自从定植以来,每年只能勉强维持生长,未见开花结实。紫丁香开花最早,在5月1日左右,最晚为暴马丁香,6月19日左右。开花期与花期接近7个丁香品种通过SPSS软件做Duncan单因素方差分析（a=0.01）,品种间差异显著。

Survey and Statistic Analysis of Blooming Characters of Syringa in Baotou

Syringa spp.are important in the virescence and beautification in Baotou city,Inner Mongolia.Different species of Syringa spp.flower very differently,it is not only on the account of the climate,but also the species.The results obtained by investigating flowering features of the 14 species of Syringa in Baotou city,Inner Mongolia through three years indicated that the characteristices of different species have obvious varieties.S.pinnatifolia and S.persica did not flower.S.oblata flowered the earliest on May 1st or so and S.amurensis flowered the latest on June 16th or so.Single-factor variance analysis made to the 7 species in terms of their flowering periods indicated different species have different flowering features.