【目的】 明确大豆茎、叶、花和荚对点蜂缘蝽Riptortus pedestris取食趋性和生长发育的影响。【方法】 采用Y型嗅觉仪和叶碟法，测定了点蜂缘蝽对大豆茎、叶、花和荚的趋性和取食选择率，并利用年龄-龄期两性生命表，评估大豆不同器官对点蜂缘蝽发育历期、繁殖力、存活率以及种群参数的影响。【结果】 Y型嗅觉仪测定表明，与空白对照相比，点蜂缘蝽成虫对大豆的茎、叶、花和荚均有明显趋性（叶：c² = 11.21, P = 0.001；茎：c² = 4.50, P = 0.03；花：c² = 5.88, P = 0.02；荚：c² = 5.09, P = 0.02），其中对叶的趋性最高，选择率为65.00%。比较对4种离体器官的趋性发现，点蜂缘蝽对叶的选择率显著高于茎（c² = 4.38, P = 0.04）和荚（c² = 6.04, P = 0.01）。叶碟法测定表明，点蜂缘蝽不同龄期若虫及成虫对大豆荚表现出强烈的取食偏好性，取食率为60.67%-72.67%，对茎、叶和花无明显取食偏好性，取食率均低于20.00%。点蜂缘蝽取食茎、叶、花和荚后，1龄若虫的发育历期和存活率均无显著差异（c² = 2.01, P = 0.57）。仅取食豆荚的点蜂缘蝽可以完成个体发育，取食茎、叶和花的点蜂缘蝽在2龄若虫期全部死亡。取食豆荚的点蜂缘蝽种群净增值率（R₀）为55.802，内禀增长率（r）为0.077，周限增长率（λ）为1.081及平均世代周期（T）为52.40 d。【结论】 点蜂缘蝽对大豆叶趋性最强，对豆荚取食偏好性最高，并且取食豆荚可以完成整个生活史。研究结果对指导田间点蜂缘蝽的虫情调查和防控具有重要意义。

 [Aim]  To determine the relative preference of Riptortus pedestris for soybean stems, leaves, flowers and pods, and the effects of feeding on these on the feeding, growth and development of this pest. [Methods]  A Y-type olfactometer and leaf dish were used to determine the relative preference of R. pedestris for soybean stems, leaves, flowers and pods. The effects of feeding on these different soybean parts on the survival rate, development period, fecundity and population parameters, were then investigated by compiling an age-stage, life table for each sex. [Results]  Adult R. pedestris significantly preferred the stems, leaves, flowers and pods of soybeans (Leaf：c² = 11.21, P = 0.001; Stem：c² = 4.50, P = 0.03; Flower：c² = 5.88, P = 0.02; Pod：c² = 5.09, P = 0.02) to the control substance, displaying the strongest preference for leaves (65.00%). Adults also significantly preferred leaves to stems (c²= 4.38, P = 0.04) and pods (c² = 6.04, P = 0.01). Nymphs and adults had a strong preference for soybean pods, with feeding rates ranging from 60.67% to 72.67%, but no obvious preference for the other three plant parts, with feeding rates < 20.00%. Food type had no significant effect (c² = 2.01, P = 0.57) on the developmental duration and survival rate of 1st instar nymphs. However, only larvae that fed on pods were able to complete development, those that were restricted to the other plant parts only reached the 2nd instar before dying. Larvae that fed on pods had a net reproductive rate (R₀), intrinsic rate of increase (r), finite rate of increase (λ), and mean generation time (T) of 55.802, 0.077, 1.081, and 52.40 d, respectively. [Conclusion]  R. pedestris is strongly attracted to soybean leaves but prefers feeding on soybean pods, which are the only part of soybean plants on which it can complete its development.