试验表明 ,影响禾谷缢管蚜自然种群变动的主要因素是气候和天敌。低龄若蚜主要受风雨的影响 ,高龄若蚜和成蚜主要受天敌和风雨共同作用。天敌主要为七星瓢虫和食蚜蝇。禾谷缢管蚜是典型的γ对策昆虫 ,具有较高的内禀增殖率 ,又具有较高的死亡率。种群的变动受自身密度的影响 ,γ值的大小可以说明自然种群变化的趋势 Experiments show that the main factors that affect the natural population dynamics of H. armigera are climate and natural enemies. Older, if the aphid affected by the wind and rain, old age if aphids and aphids are mainly affected by natural enemies and wind and rain together. The predators are mainly seven-star ladybug and hoverfly. Aphis gossypii is a typical γ-resistant insects, with a high intrinsic rate of reproduction, but also has a high mortality rate. The variation of population is affected by its own density, and the value of γ can indicate the trend of natural population change