玉米红蜘蛛是我区玉米上一种间歇性发生危害的叶螨。近年，随着气候干旱趋势的加强，其发生为害有加重的趋势，造成的损失一般地区不足１％，但在局部地区可达３％～５％，甚至更高。为此，我们于１９９４～１９９５年和１９９７年分别在伊盟达拉特旗、赤峰市宁城县对其发生规 Corn spider mite is a kind of intermittent maize spider mite on the damage. In recent years, as the trend of drought in the climate intensifies, the incidence of harm increases with the loss of less than 1% in general, but it can reach 3% to 5% or even higher in some areas. For this reason, we conducted the rules in 1994-1995 and 1997 respectively in the Dalat Banner of Irumen and Ningcheng County of Chifeng