全膜双垄沟播技术抗旱、增产被我国西北旱农区大面积推广，机械化膜上播种是必然趋势。项目依托具有自主知识产权的玉米全膜双垄沟直插式精量穴播机，结合散体动力学和土壤动力学理论，利用离散元法、非线性有限元法及高速摄像技术，通过构建玉米全膜双垄沟不同时期、周期覆膜种床细观本构模型，研究播种条件下成穴装置与覆膜种床的相互作用关系，明确该类播种方式不同参数对其膜上作业性能的影响机制，揭示直插破膜成穴特性播种方式的作业机理。基于覆膜种床膜土特性变化，采用试验和关系模型建立相结合的方法，通过不同参数播种方式下各产量指标测定分析，研究播种方式与其产量效应的内在关联机制，阐明基于直插破膜成穴特性播种方式作用下的全膜双垄沟增产效应原理。据此，提出我国西北典型旱区玉米全膜双垄沟适宜的机械化膜上播种模式。研究成果将为农机装备与玉米全膜双垄沟播农艺技术相融合提供理论依据，有效推动我国玉米全膜双垄沟膜上播种技术的发展。

The furrow sowing with whole plastic-film mulching on double ridges has been widely used in the arid region of northwest China, because it can resist drought and increase production. So the mechanical sowing on film is an inevitable trend in farming. Under the theory of granular dynamics and soil dynamics and the technology of DEM, non-linear finite element method and high-speed photography, this project studies about direct insert precision hill-seeder with corn whole plastic-film mulching on double ridges. In order to reveal operation mechanism and effect mechanism with sowing methods of properties about direct insert and puncture film and cavitation under different parameters of corn whole plastic-film mulching on double ridges, the micromechanics constitutive models of different periods and different cycle film mulching seedbed is constructed, and probes the interrelationship between hill-seeder equipment and film mulching seedbed. Based on changes properties in the membrane and soils of film mulching seedbed, the project combines experiment and relationship models, to analyse the yield index under different parameters of the sowing methods properties of direct insert and puncture film and cavitation, and study the internal mechanism of sowing methods and its yield effect, which expounds the theory of yield increase of the properties sowing methods with whole plastic-film mulching on double ridges. Accordingly, it proposes appropriate planting models of the mechanical sowing methods of corn whole plastic-film mulching on double ridges in the arid region of northwest China. The results will undoubtedly provide theoretical basis for the integration of agricultural machinery equipments and the technology of corn furrow sowing with whole plastic-film mulching on double ridges, and effectively promote the development of the mechanical sowing on film technology of corn whole plastic-film mulching on double ridges in China.