玉米红蜘蛛是我区近几年在玉米上发生的一种主要害虫,其发生危害程度是逐年加重的趋势。据调查,发生面积占玉米种植面积的80％,发生严重地块使玉米提前一月枯死,产量损失在25％以上。为了有效的控制危害,确保玉米增产,我们对玉米红蜘蛛发生及防治在田间进行了观察和试验。根据试验观察结果,提出了一些可行的防治措施,经大田验证效果比较显著。 Corn spider mites in our area in recent years occurred in corn as a major pest, the extent of its occurrence is the risk of increasing year by year trend. According to the survey, the area of ​​corn accounted for 80% of the acreage, a serious block of corn to die one month earlier, the output loss of 25% or more. In order to control the harm effectively and ensure the yield increase of maize, we observed and tested the occurrence and control of marijuana in the field. According to the experimental observation results, some feasible control measures are put forward, and the effect of field validation is obvious.