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安徽省植保总站近日预计,今年夏秋季玉米主要病虫总体呈偏重发生态势,全省发生面积2800万亩次。其中二代玉米螟在江淮北部、淮北北部中等发生,其他地区偏轻发生;三代玉米螟偏重发生,预计卵孵高峰期在8月中下旬,全省发生面积约1200万亩次;玉米蚜虫全省中等发生,发生盛期在8月下旬至9月上旬,发生面积约500万亩;玉米中后期叶部病害褐斑病、小斑病、弯孢叶斑病、南方锈病中等至偏重发生,发生流行高峰期在8月份,发生面积约1000万亩次;丝黑穗病、瘤黑粉病、纹枯病、茎腐病等将在部分地区造成一定为害,预
Anhui Provincial Plant Protection Station recently predicted that the main pests and diseases of maize in this summer and autumn fall on a general trend. The province has an area of 28 million mu. Among them, the second generation of Ostrinia nubilalis occurred in the northern part of Jianghuai and northern part of Huaibei, while the other parts of the population occurred moderately; the third generation of Ostrinia furnacalis occurred preferentially, and the peak period of egg hatching was expected to occur in late August and late in August. In the middle of the province, the peak occurred in the late August to early September, with an area of about 5000000 acres; late leaves of maize leaf spot disease, small spot disease, Curvalaria leaf spot, southern rust moderate to biased occurrence, Occurred in the peak of the epidemic in August, the occurrence of an area of about 10 million mu times; head smut, nematode disease, sheath blight, stalk rot will cause some damage in some areas, pre