近几年来，由于连续暖冬及防治工作上的疏忽，麦园蜘蛛在我地发生危害呈逐年加重的趋势。尤以1999年春季达到大发生的程度，全镇麦园蜘蛛发生面积4万hm2以上，占三麦总面积的30％，是上年发生面积的6倍以上，其中严重危害田块1万hm2，是上年的15倍以上。严重影响了三麦的产量和 In recent years, due to the continuous warm winter and prevention and control work on the negligence of wheat garden spiders in the harm that I have been increasing year by year trend. Especially in the spring of 1999 to achieve a large extent, the town of wheat spider spider area occurred more than 40,000 hm2, accounting for 30% of the total area of ​​three wheat, the previous year occurred more than 6 times the area, of which seriously damaging the plots 10,000 hm2 , 15 times more than the previous year. Seriously affected the output of three wheat and