关键词: 番茄早疫, 番茄早疫, 微生物防治, 茄链格孢菌属

Abstract: To improve the forecasting and early-warming ability of severe convection weather in Jingzhou, and enhance meteorological service for agricultural production, the authors analyzed two short- time strong precipitation processes occurred on May 15 and June 1, 2015, by using Doppler radar data in Jingzhou. The results showed that: (1) the maximum radar echo intensity of these two processes were more than 50 dBz andstable, and“train effect”occurred during the moving of radar echo; (2) mesoscale convergence occurred in both processes, and the location of strong echo was consistent with the location of mesoscale convergence in velocity field; (3) most of the time, the cloud base height of these two processes were 2-3 km, and the cloud top height were around 12 km; obvious jump of echo top height and vertically integrated liquid (VIL) existed before the generation of storm; the VIL increments of the two processes were 10 kg/m2 and 20 kg/m2 and the increments of echo top height were 3 km and 9 km, respectively; (4) the vertical integrated liquid water contents were relatively stable in the storm development phase, were 40- 50 kg/m2 and 30- 40 kg/m2, respectively; the echo mass center height of the two processes were 4-5 km, and the maximum reflectivity height were 3-6 km at most of the time except June 1, when the sinking movement occurred; (5) downburst probably occurred on June 1 according to comprehensive analysis of the information of storm tracking.