Abstract:

In order to make fully understood the distribution of maize pollen deposition on the horizontal and vertical orientations in different atmospheric stratification conditions, the maize pollen dry deposition flux spatial distribution out of the source was analyzed on the basis of the experiment of maize pollen dry deposition test and the corresponding microclimatology observation, and some critical analytical results were found. On the horizontal orientation, the pollen dry deposition flux decreased with the angle increasing between the observation direction and prevailing wind direction, and exponential decreased along with the increasing distance from the source, the inflection distances of dry deposition flux decrease at stable and unstable stratification were 6 m and 10 m respectively. On the vertical orientation, the pollen dry deposition flux decreased with the height. There were no obvious increase or decrease changes of maize pollen dry deposition flux above the heights of canopy at the stable stratification.