1, Qu Yuan's plough was invented by the working people in China in the Tang Dynasty. Its axis curve, because of its name, is different from the straight axis plow. Because it was first popularized and applied in Suzhou and other places, it is also called Jiangdong Plow. Compared with the previous plough, Qu Yuan's plough has several major improvements. First, the straight shaft and long shaft are changed into curved shaft and short shaft, and the plow plate which can rotate freely is installed at the shaft head, which not only makes the plow frame smaller and lighter, but also facilitates turning around and turning, which is flexible in operation and saves manpower and livestock.

2. China's Noriya is also called "water truck". Water-powered tools for irrigating fields. According to historical records, the tube car was invented in the Sui Dynasty and flourished in the Tang Dynasty, with a history of 1000 years. This kind of ancient tube car, which is automatic by hydraulic power, has formed an ancient pastoral spring color map in the lush Shan Jian and streams in my hometown, which is an outstanding invention of ancient people in China.

With the development of water conservancy, irrigation tools in the Tang Dynasty also made corresponding progress. At that time, people not only used oranges, windlasses and overturned cars, but also created new irrigation tools such as buckets, bucket cars, bucket cars and waterwheels, which greatly improved irrigation efficiency.

Extended data:

The Tang government attached great importance to farmland irrigation. According to historical records, in the early Tang Dynasty, more than 60 water conservancy projects were built in 130 years, which were distributed in the vast areas of China. For example, during the Zhenguan period, Zhuquan Pond, Yongfeng Pond, Hengtang Pond and Guoqing Pond were built in Putian, Fujian, with a total irrigation area of 1.200 hectares. Another example is that in July14 (the second year of Kaiyuan), four canals, Ganquan, Dangsha, Primate and Thousand Mu, were opened in Wenshui (Shanxi Wenshui) to irrigate thousands of hectares of farmland. These irrigation projects have played an important role in agricultural production.

In the Tang Dynasty, the cultivated land area reached 8.5 million hectares, and the grain output also increased. In the eighth year of Tianbao, the official warehouse stored 96 million stones of grain. When the rice price in Luoyang and Chang 'an was the lowest, there were only thirteen articles and one bucket, and Qingzhou and qi zhou had only five articles and one bucket. In the late Tang Dynasty, due to the migration of population to the south, land reclamation and water conservancy construction, the grain output in the south increased greatly.

References:

Baidu Encyclopedia-Tang Dynasty (Chinese historical dynasty)