稻赤斑沫蝉已由次要害虫上升为主要害虫 ,在重庆地区一年发生一代。一年四季土壤中都有虫卵 ,5月～ 9月是若虫期 ,6月～ 11月为成虫期 ,6月下旬～ 8月为成虫盛发期 ,6月～ 8月为产卵期。卵和若虫以稻田为中心呈扇形分布 ,距田边 30m～ 5 0m范围的旱地作物根系层最多。若虫 5龄 ,形态特征区分明显 ,各龄总历期 19天～ 41天 ,平均 2 7.7天 ;1～ 2龄若虫 6 0 %～ 80 %分布在土中 15cm～ 2 0cm范围内 ,3～ 4龄若虫 75 %～ 85 %在土中 5cm～ 15cm内 ,高龄若虫 90 %～ 95 %分布在近地 5cm～ 7cm范围内。饲养发现 ,1～ 3龄若虫向上移动的频率很快 ,从薯根上每隔 2天～ 5天迁移 1次 ,达 1cm～ 3cm ;7天～ 9天可迁移到苕茎叶上去 ;4～ 5龄常固定在一处 ,如不受惊动很少转移。成虫羽化后 7天～ 15天、平均 11.9天于上午 9～ 11时、下午 14～ 18时交配频繁 ,持续交配 2h～ 4h;交尾后 3天～ 8天、平均 5 .7天左右在有缝隙的土表产卵 ,散产 ,每处 3～ 5粒 ,平均单雌产卵量 2 0 0粒左右。成虫寿命 11天～ 41天 ,平均 19.2天 ,雌虫稍长 Rice red spot foam cicadas have been raised from the secondary pests to the main pests, occurring in Chongqing a generation a year. The soil in all seasons has eggs, May to September is the nymph period, June to November for the adult period, late June to August for the adult Shengfa period, June to August for the spawning period. Eggs and nymphs are fan-shaped around the paddy fields, with the largest number of dry-land crop roots ranging from 30m to 50m in Tanabe. The 5th instar nymphs of the nymphs had distinct morphological characteristics. The total duration of each age ranged from 19 days to 41 days with an average of 2 7.7 days. The first to second instar nymphs ranged from 60 cm to 20 cm, Age nymphs 75% to 85% in the soil within 5cm ~ 15cm, 90% to 95% of older nymphs distributed in the field 5cm ~ 7cm range. Feeding found that 1 to 3 instar nymphs move up quickly, from potato root every 2 days to 5 days to migrate 1 times, up to 1cm ~ 3cm; 7 days to 9 days can migrate to the stem leaves; 4 to 5 Often fixed in one place, such as rarely transferred without fear. Adult emergence from 7 days to 15 days, an average of 11.9 days at 9 am to 11 am, 14 to 18 pm mate frequently, continued mating 2h ~ 4h; 3 to 8 days after mating, an average of about 5.7 days in the gap The soil surface spawning, casual, each 3 to 5, the average single female fecundity around 200. Adult life 11 days to 41 days, an average of 19.2 days, female slightly longer