本文用半经验方法给出了Ａ≥７０的偶偶核的有效玻色子数，收集了玻色子数饱和的有关证据，并采用有效玻色子数概念，处理了内禀电四极矩Ｑ０与ＮπＮｖ（Ａ≥７０的偶偶核）系统关系，得到了Ｑ０的经验公式．本文采用所给的有效玻色子数对（１４２）Ｃｅ和（１４４）Ｎｄ进行了数值计算，结果较好 In this paper, the number of effective bosons of even and even nuclei with A≥70 is given by semi-empirical method, and the relevant evidence of the saturation of bosons is collected. The concept of effective number of bosons is used to deal with the intrinsic quadrupole moment Q0 And NπNv (A≥70 even and even nuclear) system, we get the empirical formula of Q0. In this paper, the numerical results of (142) Ce and (144) Nd are given with the number of effective bosons