襄南地区大量发展春玉米生产，种植面积千余公顷，玉米长势青绿，成为成片相连的绿色基地，为第二代粘虫发生提供了丰富的食料。６月上中旬春玉米抽雄授粉期，正处第２代粘虫盛蛾期和盛卵期，６月下旬至７月上旬幼虫暴发性的食害花丝、影响授粉，植株中部玉米叶片食成疙瘩残破 The large-scale development of spring maize production in Xiangnan Prefecture covers an area of ​​more than 1000 hectares. The corn grows green and becomes a green base linked into pieces, providing abundant food for the occurrence of the second generation of armyworm. In mid-June spring corn pollination period, is the second generation of moths Sheng moth and Sheng Sheng, late June to early July larvae eaten filaments, affecting pollination, plant corn leaves in the central part of the knot