The sprayer requires a differential lock. Once it is captured in the rice fields, the differential lock can help remove it. In addition, the manure paving device can be easily fertilized. The sprayer is compact in structure and beautiful in design. It is designed to be sprayed, automatically telescopic, easy to operate, and capable of handling various complex farmland topography with high efficiency. The sprayer is considered to be a good assistant for farmers, and has perfect solutions for manpower, uneven spraying and inefficiency.