论文部分内容阅读
近年来,我县小麦白粉病有逐年加重的趋势,成为限制小麦高产的重要病害之一。为了弄清小麦白粉病的发生规律,为今后开展防治和预测预报提供理论依据,1980年我站对小麦白粉病进行了系统观察,防治试验和产量损失率的测定。现初步整理如下:一、小麦致病后产量损失的测定:测定方法:在大田自然发病情况下,于同一块田内,对各小区小麦分别进行不同程
In recent years, wheat powdery mildew in our county has been increasing year by year, becoming one of the important diseases that limit the high yield of wheat. In order to clarify the law of occurrence of wheat powdery mildew and provide a theoretical basis for prevention and control in the future, in 1980, I conducted systematic observation, control test and yield loss rate determination of wheat powdery mildew. Now preliminary finishing are as follows: First, the determination of yield loss after wheat disease: Determination: In the natural case of the field, in the same field, each plot of wheat were different range