梨小食心虫Grapholita molesta是世界性果树害虫,在我国南北果区尤其是果树混栽区大面积发生,已成为桃、梨等果树优质、高产栽培的重要制约因素(杨小凡等,2013)。昆虫的产卵行为是繁衍后代、维持种群数量的重要环节,可随昼夜交替等外界光照条件变化表现出一定的周期性节律反应,研究光照对昆虫产卵节律的调控作用,对于明确其产卵活动 Grapholita molesta, a worldwide pest of fruit trees, occurs on a large area in the fruit growing areas in North and South China, especially in fruit growing areas. It has become an important restrictive factor for high quality and high yielding cultivation of peaches and pears (Yang et al., 2013). The spawning behavior of insects is an important part of breeding population and maintaining the population quantity. Insects may exhibit periodic rhythmic responses to changes in external light conditions such as day and night alternations, and the regulation of light on the ovipositing rhythm of insects may be studied. activity