A combined machine for harvesting stubbles and preparing soil comprises a machine frame (3), a suspension frame (1) and supporting travelling wheels (8). Multiple oblique adjustable digging shovels (4) are disposed on the front end of the machine frame (3) and are used for cutting stubbles of crops. Two bar-type stubble gathering mechanisms (6) are symmetrically disposed at the front part of the machine frame (3), and are used for collecting and pushing the stubbles to a picking and throwing mechanism (7). The picking and throwing mechanism (7) is disposed on the machine frame (3), and is used for picking up and throwing the stubbles into a chain conveying mechanism (10). The chain conveying mechanism (10) is obliquely fixed on the machine frame (3), and is used for conveying the stubbles of the crops to entruck the stubbles. A rotary tillage mechanism (11) is located at the back of the chain conveying mechanism (10), and is used for carrying out rotary tillage on the field. Multiple furrow openers (12) are all disposed on a rear cross beam of the machine frame (3). The combined machine has the advantages: the combined machine integrates functions of digging, picking up, conveying and entrucking stubbles as well as rotary tillage and ridging in one machine, can dig, collect, pick up, convey and entrucking stubbles of corn, sorghum and other crops, and can ensure that biomass resources of the crops are fully utilized, and at the same time, can implement the work of plowing and ditching the combined machine has a compact structure, provides multiple functions on one machine, and has high efficiency.La présente invention concerne une machine combinée pour récolter le chaume et préparer le sol qui comprend un bâti de machine (3), un cadre de suspension (1) et des roues mobiles de support (8). Plusieurs palettes de creusement (4) obliques et réglables sont disposées sur lextrémité avant du bâti de machine (3) et sont utilisées pour couper le chaume de cultures. Deux méca
