【目的】 农田残膜是白色污染主要来源，在棉田废弃混合物中，残膜与棉杂结团缠绕，如何将残膜与棉杂分离开是困扰残膜回收企业的“卡脖子”问题。【方法】 开展了5种腐解菌剂[绿陇（Lvlong, LL）、绿康（Lvkang, LK）、人元生物（Renyuanshengwu, RW）、农夫康（Nongfukang, NFK）和沃土（Voto, VT）]发酵棉田残膜回收混合物、白星花金龟Protaetia brevitarsis 3龄幼虫转化分离发酵的棉田残膜回收混合物中的棉杂和4种方式（手工、震动、风选和震动+风选）筛分“虫-菌”分离后的残膜混合物的试验，以优选腐解菌剂和筛分技术。【结果】 添加腐解菌剂和40%的牛粪可以促进残膜混合物的发酵。“虫-菌”分离后的残膜混合物分层散开、粒度分明。RW、NFK和VT菌剂组在虫体增重量和取食量上表现较优，范围分别为58.93-60.71和896.10-913.67 g；VT菌剂组在虫体转化率（66.03%）和虫砂转化率（96.27%）上最优；VT、RW和NFK菌剂组在有机物料利用率上较优，范围为29.82%-30.64%，5个菌剂组的残膜收获系数基本一致。综合比较，VT菌剂为棉田残膜回收混合物“虫-菌”分离的最优腐解菌剂。虫砂和残膜筛分纯净率以手工分离方式为最优，震动+风选次之，2种产物的筛分纯净率都在91%以上，震动分离方式在筛分纯净率上表现最差，但在筛分时长上，震动分离方式耗时最短，其次为风选分离方式，人工分离时长是震动+风选分离方式的2.48倍，综合考虑，震动+风选为最佳的筛分方式。【结论】 棉田残膜回收混合物“虫-菌”分离的优选菌剂为VT，筛分技术为震动+风选，可为棉田残膜资源化利用和棉花产业可持续绿色发展提供支持。

 [Aim]  To improve current methods of separating residual film, the main source of white pollution in farmland, from cotton debris. [Methods]  Experiments were conducted to assess the effect of 5 different decomposition inoculants (Lvlong, LL; Lvkang, LK;  Renyuanshengwu, RW; Nongfukang, NFK; Voto, VT) on residual film recovery from fermented cotton field waste that had been transformed and separated by the 3rd instar larvae of Protaetia brevitarsis. The residual film mixture was then screened in one of 4 different ways (manually, by vibration, wind separation or vibration plus wind separation) to determine the optimal decomposition inoculant and screening method. [Results] Adding decomposition inoculant and 40% cow manure promoted the fermentation of the residual film mixture. “Insect-microorganism” separation caused the residual film mixture to become stratified and granular, but the residual film harvest coefficients of each of the 5 treatments were basically the same. The RW, NFK and VT treatments resulted in the greatest larval weight gain and food intake, which were 58.93 to 60.71 g and 896.10 to 913.67 g, respectively. The VT treatment had the best larval conversion rate (66.03%) and larval dung-sand conversion rate (96.27%). The VT, RW and NFK treatments had the highest utilization rate of organic materials, ranging from 29.82% to 30.64%. Overall, the VT inoculant was the best. Manual screening achieved the highest screening purity rate, followed by vibration plus wind separation, with purity rates >91%. Vibration separation had the worst screening purity rate but also required the least screening time, followed by the wind separation method. The time required for manual separation was 2.48 times that required by the vibration plus wind separation method. Therefore, the vibration plus wind separation method was the best overall. [Conclusion]  VT is the preferred decomposition inoculant for cotton residue film recovery, and a combination of vibration and wind separation is the best screening method.