本文在发现域研究中首次提出了密比系数和域比系数的概念,解决了在自然条件下同一寄主的各种寄生蜂发现域比较的问题。研究和探讨了稻纵卷叶螟各种寄生蜂发现域之间的数值比较及寄生蜂密度对发现域的影响,建立了AR-DR对数回归模型。 The concept of density factor and domain ratio coefficient was proposed for the first time in the research of discovery domain, which solves the problem of comparing the discovery domains of various parasitic wasps of the same host under natural conditions. The numerical comparison between the parasitic wasps found in the rice leaf roller and the effect of the density of parasitic wasps on the discovery area were studied and discussed. The AR-DR logistic regression model was established.