【摘要】 对1985年3～6月,1992年3～6月齐齐哈尔市春季的气传花份作了初步的观察、统计和分析。结果表明,3月初空气中就有花粉飘散,春季高峰期为5月,1985～1992年相隔7年气传花粉的数量和种类都略有增加。更多还原

【Abstract】 The airborne pollen grains in Qiqihar in spring were examined from 15th March,1985 to 30th June,5th March, 1992 to 30th June. There were pollen grains floating since 5th March. There was a peak of airborne pollen grains on May. By means of intermittent collection and observation in the past 7 years, it is found that airborne species and amount of pollen grains have increased.更多还原