气候对川东南小麦白粉菌远程传播的影响研究

通过早期地面孢子捕捉结合天气图分析,对川东南小麦白粉菌分生孢子远程传播的天气条件进行了探讨.结果表明,孢子升空出现在菌源地处于槽前、切变线的东侧或东南侧和低压、高压西部或高压脊后部.在西南风、南风或东南风的携带下水平运行进入盆地内,并在降雨或盆地处于高压控制和切变线北侧时降落。

A PRELIMINARY INVESTIGATION OF THE WEATHER CONDITIONS FOR LONG-DISTANCE DISPERSAL OF WHEAT POWDERY MILDEW IN SOUTHEASTERN SICHUAN BASIN

Spore trapping and weather map analysis were employed in the experiment reported inthis paper.Wheat powdery mildew(Erysiphe graminis f.sp.tritici)conidia were found totake off when the source regions of the fungus wcrc located in the front of the trough line orat the cast/southeast of the rear of the ridge of high pressure on the weather maps.Theywere then caeeied horizontally into Sichuan Basin by southwest,south or southeast windand finally part of the conidia landed on the plants together with the rainfall or when theBasin area was under the control of high pressure or at the north of the shear line.