With the development of water conservancy, irrigation tools in the Tang Dynasty also made corresponding progress. At that time, people not only widely used oranges, windlasses and dumpers, but also created new irrigation tools such as buckets, hopper cars, hopper cars and waterwheels, which greatly improved irrigation efficiency.
In the Tang Dynasty, new irrigation tools were invented, such as buckets, bucket cars, bucket cars and waterwheels. The technology used in these tools is to connect wooden barrels with thick bamboo, to get through the joints inside the bamboo, and to guide the water to the bucket car on the other side through the water diversion energy frame, or to guide the water to the high water wheel through the hydraulic impulse of the wooden barrels. Using water to rotate some irrigation in the same form, the tools adapted to local conditions are suitable for the same conditions, which greatly improves the irrigation efficiency.
Tang Zitong's national agricultural production began to resume. The peak of agricultural production development during the Kaiyuan period of Xuanzong (7 13 ~ 74 1) made food prices cheaper and cheaper. In 725 (the 13th year of Kaiyuan), prices in San Qian were stable for a long time.