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1.夏熟作物: (1)麦类白粉病:预计在淮南麦区发生程度为3级,淮北为4～5级,发生面积1100万亩,占全省总种植面积52%,发生面积比上年-21%,发生程度与上年相仿。 (2)麦类纹枯病:预计全省发生程度将达4级,局部5级,发生面积1300万亩,占全省总种植面积62%,发生面积比上年-13%,发生程度比上年+1～2级。 (3)麦类赤霉病:发生轻重主要取决于三麦穗期天气情况,特别是连阴雨日数,是典型的气候型病害,在该省淮河以
1. Summer crops: (1) wheat powdery mildew: It is estimated that the incidence of wheat in Huainan area is 3, Huaibei is 4 to 5, an area of 1100 mu, accounting for 52% of the total planting area of the province, the occurrence of area ratio The previous year -21%, the extent of occurrence is similar to the previous year. (2) Wheat sheath blight: It is estimated that the province will have a grade of 4 and a partial 5, with an area of 13 million mu, accounting for 62% of the total planted area of the province with an area of -13% over the previous year. The occurrence ratio Last year + 1 ~ 2 levels. (3) Scab: The occurrence of severity depends mainly on the weather of the three wheat spikes, especially the number of rainy days. It is a typical climatic disease.