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棉蝗Chondracris rosea(De Geer)是个体较大的土蝗,成虫体长62—81毫米,一年发生一代,据记载主要为害棉花、甘蔗、水稻、竹类、柑桔等,食性很杂,而在江北近年主要为害大豆和棉花,主要为害叶片。此蝗在该地区以往没有造成危害,1989年在淮北平原的五河县新及区、城郊区的郜家湖大豆田危害严重。发生面积6500亩,2—5头/米~2的有3000亩,6—30头/米~2的有2500亩,31—60头/米~2的有1000亩,减产5—10％的有3500
Chondracris rosea (De Geer) is an individual larger soil locust, body length 62-81 mm, a generation a year, according to the record is mainly harmful cotton, sugar cane, rice, bamboo, citrus, etc., In Jiangbei in recent years, the main damage to soybeans and cotton, the main damage leaves. This locust did not cause any harm in the area in the past. In 1989, it was severely endangered in Xinhe District and Wujiahu Soybean Fields in the suburbs of Huaibei Plain. An area of 6500 acres, 2-5 heads / m ~ 2 has 3000 acres, 6-30 heads / m ~ 2 has 2,500 acres, 31-60 heads / m ~ 2 of 1,000 acres, 5-10% reduction in production There are 3500