This case is an effective way to cultivate the back soil on the surface of cultivated land, and to make the link of tractor transport trolley for sowing land. There are many secondary electric soils (9) on the sides (1) of the triangular support (1 a) and the inner side (1)The driving chain gear (13) which is connected with the rotating shaft (12) of the gear (11) which is connected with the power lifting shaft of the Commons and the two side lines of the zongdong shaft (16) which is connected with the chain (13) which is connected with the chain (14) which is a comprehensive dynamic body are respectively fixed on the rotating shaft. Before soil cultivation, the work of marking cultivated land can be completed at one time
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