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棉铃虫幼虫危害量和生命表的研究是制定防治指标的基础。吴坤君等1978、79年先后报道了棉铃虫试验种群和自然种群生命表,指出天敌是影响棉铃虫种群数量的关键因子之一。鉴于各棉区生态系统差异甚大,为给关中棉区棉铃虫防治指标的确定提供科学依据,于1977—1983年进行了研究。
The study on the damage and life table of cotton bollworm larvae is the basis for the formulation of control indexes. Wu Kunjun et al. Reported the test population and the natural population life table of cotton bollworm successively in 1978 and 1979, and pointed out that natural enemies are one of the key factors affecting the population of cotton bollworm. In view of the great differences in ecosystems in cotton fields, a scientific basis for the determination of cotton bollworm prevention and control indicators in the Guanzhong area was provided. Studies were conducted in 1977-1983.