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白背稻虱是涪陵稻田飞虱的主要虫种。据调查:1975—1979年间,早、中、晚稻田问白背稻虱的虫量,占各种飞虱虫量的61.2％。影响水稻产量,常年损失稻谷5—8％,重害年达10％以上。 一、越冬虫源:为摸清越冬虫源,1975年1—3月全区组织了较大范围的虫源普查,普查的地点有涪陵、南川、丰都、石柱、垫江、酉阳、秀山、黔江、彭水、武隆十个县的30个公社81个生产队。普查地势的高度有拔海200多米的河谷地带,至1,200余米的高山,普查的虫态有卵、若虫和成
White back louse is the main species of planthopper in Fuling. According to the survey: Between 1975 and 1979, the number of white backjappers in early, middle and late rice fields was 61.2% of the total number of planthoppers. Affect rice production, perennial loss of 5-8% of rice, heavy pests more than 10%. First, overwintering insect source: To find out the overwintering insect source, from January to March 1975 the region organized a wider range of insect censuses, census sites Fuling, Nanchuan, Fengdu, pillars, Dianjiang, Youyang, Xiushan, Qianjiang, Pengshui, Wulong ten counties in 30 communes 81 production team. Census terrain elevation of more than 200 meters pull the valley of the valley to 1,200 meters high mountain, the census of the census of eggs, nymphs and into