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在制种玉米生产中,危害最重、对产量影响较大害虫主要是叶螨、玉米螟、双斑萤叶甲。随着制种玉米集约化种植,虫害的危害面积不断扩大,迁飞性增强,小家小户的不定时防治已经不能有效控制虫害的发生。并且制种玉米生长后期株高已超过打药机械高度,防治难度加大。通过近几年不断探索和实践,总结出适合制种玉米田采用的“三虫”全程防控技术措施。一、3种主要害虫危害症状及发生规律
Maize production in the system, the hardest hit, the larger impact on the production of pests mainly spider mites, corn borer, biflexa. With the intensification of seed production of corn planting, insect pests continue to expand the area of damage, increased flight performance, small and small households from time to time control can no longer effectively control the occurrence of pests. And seed production of late corn plant height has hit the height of fight medicine, prevention and control more difficult. Through continuous exploration and practice in recent years, summed up the “three insects ” full prevention and control technology measures suitable for seed production of corn field. One, three kinds of major pests hazards and the occurrence of the law