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一、棉盲蝽象的危害性盲蝽象是新疆棉区主要害虫之一,南北疆广大棉区均有分布.其对棉花的为害是多方面的,但主要是造成棉蕾脱落.据历年全疆各地调查,棉株被害率一般达100%,百株虫数达12—190头.7月中前后棉花蕾铃脱落总数中有22.8—97.5%是盲蝽象造成的,对棉花产量影响极大.据1960年新疆农科所在库尔勒研究,防治盲蝽象的棉田,棉株结铃前蕾数平均多44.4—95.6%,而8、9月分铃多23.6—148.1%;每亩增收籽花206.2斤,增产78.3%,其中霜前花增加86.1%.可见盲蝽象的为害是
First, the cotton lizards like harm The black jerusalem like one of the main pests in Xinjiang cotton area, northern and southern Xinjiang cotton are distributed in most of its damage to cotton is multifaceted, but mainly caused by cotton buds off.According to Throughout the years throughout the investigation of Xinjiang, the cotton plant damage rate was generally up to 100%, the number of hundreds of insects up to 12-190.About July and July cotton buds off the total number of 22.8-97.5% is caused by the bug, the cotton yield Great impact.According to the Korla research in Xinjiang Agricultural Sciences in 1960, the prevention and treatment of planthopper elephant cotton fields, the average number of buds before the cotton boll 44.4-95.6%, while in August and September bell more 23.6-148.1%; mu 206.2 pounds of seeds increased income, an increase of 78.3%, of which frost increased by 86.1% before visible nuisance like