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小麦根腐病是一种对小麦产量影响很大的病害,今年在我省部分麦田发病严重。据武强县植保站调查,全县20万亩小麦,发病面积大约2000余亩,发病轻的减产20%左右,严重地块减产50—70%。一、发病原因:1.播种晚。由于1992年夏秋干旱少雨,造成秋季作物成熟晚,大部分麦田较往年晚播种15—20天。根腐病菌是一种弱寄生菌,由于冻、旱、涝、虫等灾害致使生活力弱的麦株即易被感染。晚播麦田因生长势弱,所以易被病菌侵染。
Wheat root rot is a disease that has a great impact on wheat yield. This year, some wheat fields in our province have a serious incidence. According to Wuqiang County Plant Protection Station survey, the county 200000 acres of wheat, the incidence of about 2000 acres, the incidence of mild reduction of about 20%, 50-70% of serious mass production. First, the cause of the disease: 1. Sowing late. As the summer and autumn of 1992 caused a series of dry and late autumn crops, most of the wheat fields were sowed for 15-20 days later than in previous years. Root rot bacteria is a weak parasitic bacteria, due to cold, drought, waterlogging, insects and other disasters caused by weak vitality that is susceptible to infection. Evening wheat field due to the growth of weak, so vulnerable to infection.