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白翅叶蝉是近几年发生在安宁河下游两岸河谷地带稻区的主要害虫之一。以米易县为例,白翅叶蝉发生面积1976年为66,628亩,占61.25％,损失稻谷120万斤左右。以后各年均有发生,1980年发生面积达78,846亩,占12.47％。一、生活史:从2月下旬早稻秧田揭膜开始(旬平均气温在12℃以上),成虫便从越冬场所逐渐迁移到早稻、中稻秧田内取食危害。4月开始在秧田和早稻本田内被害稻叶上产卵,发生第一代。早稻成熟后,大量一代成虫于5月上、中旬羽化后迁移到正处分蘖、拔节的中稻田中危害产卵,发生第二代。6月中、下旬第二代成虫陆续
White-winged leafhopper is one of the major pests that have occurred in the rice fields of the two banks of the lower reaches of the Anning River in recent years. Taking Miyi County as an example, the area of white-winged leafhopper was 66,628 mu in 1976, accounting for 61.25% of the total, with a loss of about 1.2 million kg of rice. In subsequent years, all occurred in 1980, covering an area of 78,846 mu, accounting for 12.47%. First, the history of life: early February from the beginning of the early rice seedling Jiemo (ten-day average temperature above 12 ℃), adults will gradually migrate from the overwintering places to early rice, mid-rice seedling feeding hazards. The first generation was spawned in April on rice leaves damaged in seedling and early rice Honda. After the early rice matures, a large number of adult worms on May, mid-eclosion and migrate to the tillering, jointing mid-paddy endangering the spawning, the second generation. In mid-June, the second generation of adult one after another