杨树飞絮与气象条件关系研究

Study on the Correlation between the Poplar Catkin and Meteorological Conditions

本文通过对我国杨树主产区的淮河流域杨树飞絮与气象要素进行观测试验,结果表明:杨絮出现早迟与气温、相对湿度、日照、风、降水等气象要素关系密切。主要表现为温度高、光照充足、降水少且空气干燥、风大利于花絮飞扬,易诱发生态事件。通过研究飞絮发生的气象指数等,提高飞絮的监测预警水平;主要应对方法是引种无絮或少絮的品种,在杨絮飞扬的关键期通过人工增雨等措施降低空气中飞絮浓度。

In this paper observational experiments were carried out on the poplar catkin and meteorological factors in Huaihe River Watershed,a main poplar-producing region in China. The results showed that the early or late appearance of the poplar catkin was closely correlated with meteorological factors including temperatures, relative humidity, sunshine, winds and precipitation, which mainly showed as follows： High temperatures, abundant sunlight, little precipitation, dry air and high winds were in favor of the catkin flying and likely to cause biological incidents. Studying the meteorological indexes that cause occurrences of the catkin flying could improve the monitoring and early warning level. The main solutions were introduction of non-catkln or little-catkin poplar varieties and measures including artificial precipitation during the critical period of the catkin flying.