大豆食心虫危害情况既是当年该虫发生防治情况的重要标志,也是预测第二年发生趋势的主要依据。因此,准确掌握每年的危害情况就成为该虫测报工作中的一项重要内容。但目前所采用的每块田选五点共取大豆10——15株剥荚或混合脱粒,计算虫食率的调查方法所得的结果误差很大,代表性较差,很有加以改进的必要。近几年来,我们做了一些调查分析工作,试用了两种新的调查方法,效果很好,既提高了调查速度,又不影响资料的准确性和与 Soybean borer damage is not only the status of the pest prevention and control of an important symbol of the situation, but also forecast the main basis for the trend of the second year. Therefore, accurately grasping the annual damage situation has become an important content of the pest forecasting work. However, at present, each field selected five points total soybean 10-15 stripping pods or mixed threshing, the calculation of insecticidal rate of the survey results obtained great error, poor representation, there is a need to be improved . In recent years, we have done some investigation and analysis, tried two new investigation methods and achieved good results, which not only increased the speed of investigation but also did not affect the accuracy of the data and