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1990年小麦条锈病在我省大流行,尤其是鄂北麦区发病早、为害时间长、为害重、损失大,一般未防治的田块比防治好的要减产50～60%。大面积调查发现,减产因素主要是每穗粒数和千粒重。我们在谷城县定点测定了小麦条锈病为害损失率,明确了不同发病程度对小麦产量损失情况,为测报和防治决策提供了依据.一、测定方法在小麦条锈发病后期(5月中旬),以“鄂恩一号”品种为测定对象,选择肥力长势一致的重病田和轻病田各一块,按八级标准(0.5%、10%、20%、40%、60%、80%、
Wheat stripe rust in 1990 in our province pandemic, especially in northern Hubei Province early onset, damage for a long time, heavy damage, loss, generally not controlled field than the prevention and control to cut 50 to 60%. A large area survey found that the main factors to reduce the yield per thousand grains per panicle and grain weight. In Gucheng County, we determined the loss rate of wheat stripe rust damage, defined the different incidence of wheat yield loss, providing a basis for the determination of the report and prevention and control.One, the determination method in the latter part of wheat stripe rust (mid May) , According to the standard of grade eight (0.5%, 10%, 20%, 40%, 60%, 80%, 80%) according to the grade of “E’en No.1”