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本文阐述了甜菜褐斑病发生发展的一般规律及其大田监测实用技术。甜菜褐斑病原菌发生的最适宜条件是：相对湿度100％RH和温度为24．5℃；甜菜的残体、过高的相对湿度和昼温26．7－32．2℃、夜温15．6℃有利于甜菜褐斑病的发展流行。介绍甜菜褐斑病大田监测技术的要点是：预测过程包括初始测定和喷药推迟监测两个步骤，根据病情发展的安全域值和警告域值的数据，决定喷施防治化学药剂的剂型和时间。本文讨论了这种广泛应用于美国的褐斑病管理模式在我国应用的可能性。
This article describes the general rules of the occurrence and development of sugar beet leaf spot and field monitoring of practical technology. The most suitable conditions for the occurrence of brown spot beetle pathogen are: relative humidity 100% RH and temperature 24.5 ℃; sugar beet residue, excessive relative humidity and day temperature 26.7-32.2 ℃, night temperature 15 ℃. 6 ℃ is conducive to the development of beet leaf spot epidemic. The main points of the technology for monitoring beet leaf brown spot disease in the field are as follows: the prediction process includes two steps: initial measurement and postponed spraying. According to the data of the safety threshold value and the warning value of disease development, the dosage form and time of spraying chemical prevention and control . This article discusses the possibility of applying this brown spot management model widely used in the United States in China.