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1月31日,北京市农业局发布了2013年植物病虫草情报,预计2013年全市小麦和玉米主要病虫草害总体呈中等发生态势。1.小麦病虫:小麦白粉病总体中等发生,感病品种及群体密度大的地块将偏重发生,发生面积23万亩。小麦叶锈病为轻发生,发生面积6万亩。小麦蚜虫为偏重发生,发生面积80万亩,以穗期蚜虫为害
On January 31, Beijing Municipal Bureau of Agriculture released the 2013 Plant Diseases and Insect Pests Information, and it is estimated that the major diseases, pests and weeds in wheat and maize in 2013 will be moderately moderate in general. 1. Wheat pests: wheat powdery mildew is generally moderate, susceptible varieties and population density of the plot will be biased to occur, the occurrence of an area of 230,000 mu. Wheat leaf rust is light, the occurrence of an area of 60000 acres. Wheat aphid-prone, occurred in an area of 800000 acres, to aphids infestation