The corn seeding patterns with whole plastic-film mulching on double ridges in the dry land is the new technology for rainwater harvesting and soil moisture conservation and drought resistance in northwest arid area of China. Market demand of this new technology is very large, and hence, until December 2015 the promotion cultivation area of corn seeding patterns with whole plastic-film mulching on double ridges had reached 8.02×105 hm2 in Gansu Province. However, with the input quantity of plastic film and application area increasing, the problem was not allowed to ignore that the large amount of plastic film was residual in the fields after harvesting the corn, which caused serious field soil pollution and environmental pollution. Therefore, to promote the mechanization of residual film recycling had become an inevitable trend. Meanwhile, the first-generation collector for corn whole plastic film mulching on double ridges was designed by our research team. In order to improve the work performance of the collector for corn whole plastic film mulching on double ridges, the film-stubble distribution characteristics and the mechanization recycling process of residual plastic film were investigated, and through the analysis of the related operation mechanism of key components (loosening residual plastic film device, and collecting residual plastic film mechanism) and the process of collecting plastic film mechanism, the related parameters were determined, which were the parameters affecting the leakage rate of residual plastic film and the wrapping rate of residual plastic film. So in order to reduce the frequency of field experiment, based on field experiment and four-factor three-level Box-Behnken experimental design method, the mathematical models between the key parameters and the leakage rate of residual plastic film and the wrapping rate of residual plastic film were established, the regression equations of the 4 factors were fitted through the Design Expert 8.050 (experimental design expert) software, and the influence rule of parameters on the test index was studied. Using the variance analysis of regression equation and the response surface method, the influence of some interaction factors on the leakage rate and wrapping rate of residual plastic film was investigated, and the value range and the optimal combination of the parameters were determined. The results showed that the forward velocity was 0.46 m/s, the eccentric film-picking roller speed was 163 r/min, the film-curling roller speed was 77 r/min and the rotating speed of middle film-conveying axle was 45 r/min. Confirmatory field tests showed that with the optimal working parameters, the collector for corn whole plastic film mulching on double ridges had very good work performance, and the average value of the residual rate of film was 6.06% and the wrapping film rate was 0.73%, which met the requirements of the relevant national standards and was also significantly improved compared with that before the optimization. This approach of research is suitable for the parameter optimization of the collector for corn whole plastic film mulching on double ridges, and also provides the reference for the research and development of film collecting equipment in the northwest arid area of China.%为进一步提高玉米全膜双垄沟残膜回收机工作性能，对玉米全膜双垄沟膜-茬分布特性与对应的机械化残膜回收工艺进行了探讨，通过对玉米全膜双垄沟残膜回收机关键部件相关作业机理进行分析，确定了影响样机残膜漏收率、缠膜率作业效果的相关参数。采用四因素三水平Box-Behnken试验设计方法，建立了关键参数与残膜漏收率、缠膜率之间的数学模型，确定了样机较优的运动参数组合（样机前进速度0.46 m/s、偏心挑膜滚筒转速163 r/min、卷膜主动辊转速77 r/min和中间送膜轴转速45 r/min），并对最优作业参数间的关系进行了分析。田间验证试验表明，作业机残膜漏收率均值为6.06%、缠膜率均值为0.73%，试验结果满足国家相关标准规定的要求。研究方法与结果可为西北旱区玉米全膜双垄沟残膜回收装备的研发提供参考。
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