关键词: 菜籽饼有机肥, 菜籽饼有机肥, 化肥, 烤烟, 云烟97, 产量, 品质

Abstract: In order to study the features of the different types of severe convective weather on Doppler radar products, based on CINRAD/CA radar data in Datong, a hailstorm weather process occurring in Guangling on July 5, 2012 and a short-time rainstorm weather process occurring in Zuoyun on July 21, 2011 were analyzed comparatively. The results showed that: (1) inversion layer was thick in the hailstorm weather and was shallow in the short-time rainstorm weather. (2) The height of strong echo area was on the -20℃ isotherm in the hailstorm weather and was under 0℃ isotherm in the short-time rainstorm weather. (3) The height of 65-60 dBz echo in the hailstorm weather was 4-5 km higher than in the short-time rainstorm weather. (4) There were weak echo area on low level and overhang echo on middle-high level in the hailstorm weather. (5) Mesocyclone, mesoscale convergence and divergence of the storm top were the main characteristics in the hailstorm weather, while deep moist layer and jet maintained for a long time were the main characteristics in the short-time rainstorm weather. (6) The wind direction was clockwise on low layer and was counterclockwise on middle layer and was clockwise on high layer in the hailstorm weather, while the wind direction on all layers was clockwise in the short-time rainstorm weather. (7) There were sustainable high value of VIL and a corresponding gradient changes value in the hailstorm weather, while the VIL jumped by small amount of data in the short-time rainstorm weather.