上半年广西农作物病虫草鼠害发生趋势

• 机 构: 广西区农作物病虫测报站,
• 出 处: 农药市场信息
• 发表日期: 2011年11期
• 关键词: 农作物 发生趋势 水稻病虫 虫源基数 稻纹枯病 稻纵卷叶螟 三化螟 病虫草鼠害 农作物种植 稻飞虱

根据广西农作物种植结构,结合病虫源基数及历史资料综合分析,今年上半年广西农作物主要病虫草鼠总体发生面积趋势预测如下:一、水稻病虫。预计发生程度4(5)级,发生面积4800万亩次。与上年相比,预计稻纹枯病、三化螟、稻纵卷叶螟等病虫发生持平,稻飞虱发生略轻。稻瘟病。发生程度2(3)级,发生面积350万亩次,发生主要区域在桂东北、桂东南及种植感病品种较多的山区。

According to the crop planting structure in Guangxi, combined with the base of pest and disease sources and comprehensive analysis of historical data, the forecast of the overall area trend of the main pests, diseases and insects in Guangxi in the first half of this year is as follows: I. Rice pests and diseases. Expected level of occurrence 4 (5) level, the occurrence of an area of ​​4800 mu acreage. Compared with the previous year, it is expected that rice sheath blight, rice stem borer, rice leaf roller and other pests occurred flat, planthopper occurred slightly lighter. rice blast. Occurrence of 2 (3) level, occurred an area of ​​3.5 million mu times, occurred in northeast Guangxi, southeast Guangxi and planting susceptible varieties more mountainous areas.