论文部分内容阅读
玉米螟是我县主要作物玉米的重要害虫之一。近年来,由于各级领导的重视,开展了以防治玉米螟为重点的玉米病虫害综合防治工作。取得了很好的经济效益。但由于多年连续种植黄莫417这个品种,品种本身的抗虫性明显下降,导致玉米螟为害逐年加重。对此,我们于1992年进行了调查。
Corn borer is one of the major pests of maize in our county. In recent years, due to the attention of leaders at all levels, the prevention and control of corn borer focused on comprehensive prevention and control of corn pests and diseases. Has made very good economic benefits. However, due to continuous cultivation of yellow Mo 417 this variety for many years, the varieties of insect resistance decreased significantly, leading to corn borer pests increased year by year. In response, we conducted a survey in 1992.