孝感县肖港公社群光大队种棉花1,200亩,主要棉虫有棉蚜、棉铃虫、红蜘蛛、红铃虫和小造桥虫。1975年以来,在大面积药剂防治基础上,又进一步开展了查益虫报益虫、查害虫报害虫的“两测两报”工作,有效地指导了大面积综合防治,促进了增产。1972—1977年,第四代棉铃虫青铃被害率由30.4%下降到0.33%,每亩防治成本由8.4元下降到0.54元,各种化学农药用量由26,232斤下降到683斤。一、利用弱点,进行预防据几年来测报员调查,第三代红铃虫产卵隐蔽,有93—97%是产在青铃壳与萼片之间,较难防治。但红铃 Xiaogang County Xiao Gang commune brigade plant cotton 1,200 acres, the main cotton insects are cotton aphids, cotton bollworm, spider mite, pink bollworm and a small bridge parasite. Since 1975, on the basis of prevention and treatment of large-scale pharmaceutical preparations, we have further carried out the “two tests and two reports” of checking insect pests and insects, and effectively guided large-scale comprehensive prevention and control and increased production. From 1972 to 1977, the damage rate of the fourth generation cotton bollworm decreased from 30.4% to 0.33%, the cost per mu decreased from 8.4 yuan to 0.54 yuan, and the dosage of various chemical pesticides dropped from 26,232 catties to 683 catties. First, the use of weaknesses, prevention According to several years of surveyors survey, the third generation of red bollworm oviposition concealment, 93-97% is produced in the bell shell and sepals between the more difficult to control. But red bell