Abstract: An electric shift actuator includes a case body assembly, a case cover assembly covering the case body assembly, and a gear reduction mechanism assembly arranged in the case body assembly. The gear reduction mechanism assembly includes a motor subassembly, a face gear set, a first-stage gear reduction subassembly, and an output gear assembly configured to be connected to a parking mechanism. An output of the motor subassembly meshes with an input of the first-stage gear reduction subassembly in parallel to form first-stage gear reduction transmission, an output of the first-stage gear reduction subassembly vertically meshes with an input of the face gear set to form second-stage gear reduction transmission, and an output of the face gear set meshes with an input of the output gear assembly in parallel to form third-stage gear reduction transmission. The actuator has functions of emergency parking and manual unlocking with improved safety and redundancy.

Abstract: The present application discloses the use of diatom in rice planting and a cultivation method of rice in symbiosis with diatom and relates to the technical field of rice planting. The use of diatom in rice planting is achieved by adding diatom to an irrigated paddy field and performing co-cultivation during rice planting. Co-cultivation of diatom and rice can effectively achieve the beneficial effects of increased yield/silicon, thicker straw, and increased lodging resistance in rice, and can reduce soil degradation, reduce the risk of heavy metal pollution and increase soil fertility.