青海云杉无性系物候期对气象因子的响应研究

Picea carassifoliaclones phenological response of the meteorological factors

通过对张掖市龙渠青海云杉(Picea carassifolia)种子园内无性系7年的物候观测,运用ex-cel软件,对温度、相对湿度、日照时数三个关键气象因子与青海云杉无性系花芽开放期、花粉飞散盛期和叶芽开放期三个重要物候期进行相关及其回归分析。结果表明:1)青海云杉无性系花芽开放期,与四月上旬的平均温度、≥0℃积温极显著相关,与四月上中旬的平均相对湿度、日照时数显著相关,温度是影响青海云杉无性系萌芽的主要气象因子;2)青海云杉无性系花粉飞散盛期与四月下旬至五月上旬的平均温度、≥0℃积温、平均相对湿度、日照时数极显著相关。3)青海云杉无性系叶芽开放期与四月下旬至五月上旬的温度、≥0℃积温和四月下旬至五月上旬的平均相对湿度、日照时数显著相关。

According to seven years＇ phenophase observation for Picea carassifolia clone in the breeding garden in Zhangye longqu,conduct correlation and regression analysis by use of excel software,to temperature,relative humidity,sunshine time three key meteorological factors and Picea carassifolia clone blossom bud opening period,blooming period of pollen dispersal and leafbud opening period three important phenophase.The results show that：（1） the opening period of Picea carassifolia clone blossom bud is significant related with the average temperature in early April,the accumulative temperature ≥0 ℃,the very relative humidity in the first twenty-day of April and the sunshine duration.The temperature is the main influence meteorological factor to the breeding of Picea carassifolia clone;（2） the blooming period of Picea carassifolia clone pollen dispersal is significant related with the average temperature from late April to early may,the accumulative temperature ≥0 ℃,the very relative humidity and the sunshine duration.（3）the leafbud opening period of Picea carassifolia clone is significant related with the temperature from late April to early may,the accumulative temperature ≥0 ℃,the average relative humidity from late April to early may and the sunshine duration.