江苏沿江棉区棉铃虫在棉田发生以三、四代为主，其中四代是主害代。查准田间卵量对决策防治及准确反映当年棉铃虫发生量等具有重要意义。国家标准《棉铃虫测报调查规范》规定三代查棉株群尖和嫩叶上的卵量（实际调查中发现漏查率较高），而对四代查卵未有明确规定。为此，... The cotton bollworm in the cotton area along the Yangtze River in Jiangsu Province takes three or four generations as the main generation, of which four generations are the main victims. It is of great significance to check the amount of oocytes in the field to prevent and control the decision-making and accurately reflect the occurrence of cotton bollworm in that year. The national standard “Helicoverpa armigera survey” stipulates that the number of eggs on the tip and young leaves of the three generations of cotton plants is higher than that on the young leaves. to this end,...