褐稻虱是南方十三省(市)稻区的大害虫,为我省四大稻虫之一。对褐稻虱的越冬虫源问题,长期以来国内外争论很大。近年来,国内一些报导;褐稻虱是专食水稻的害虫,只有四季有水稻存活的地区才 能越冬。因此认为在我国只有海南岛五指山分界岭以南地区为常年繁殖区,雷州半岛北纬21度为 Brown planthopper is a pest in the thirteen provinces (cities) in the south of China, and is one of the four major rice-bugs in the province. The overwintering source of brown planthopper has long been a controversial issue both at home and abroad. In recent years, some domestic reports; brown planthopper is a pest of the special dietary rice, only the four seasons of rice to survive in winter. Therefore, it is considered that in our country only Hainan Wuzhishan area boundary south of the area is a breeding area for the year, Leizhou Peninsula latitude 21 degrees