In ancient agriculture in China, agricultural areas and farming culture were in the core and leading position. The influence of agricultural culture on pastoral areas is obvious. However, the influence of pastoral culture on agricultural areas can not be ignored. This is the weak link of previous research. In fact, historically, livestock and livestock products were frequently and massively transported from pastoral areas to agricultural areas, which greatly supported agricultural production in agricultural areas. This is most obvious in semi-agricultural and semi-pastoral areas. Many of the pastures set up by the Han and Tang governments in this area and the large-scale animal husbandry run by private herders here rely on the continuous supply of livestock in pastoral areas. Donkey, mule, camel, etc. Originated in the northern grassland, it was regarded as a "rare animal" in the early Han Dynasty and became an important draught animal in the northern agricultural area of China since the Han and Wei Dynasties. The improvement of livestock breeds in agricultural areas is often due to the introduction of livestock breeds in pastoral areas. Ganqingma, Western Region Horse, Mongolian Horse, Northeast Horse, etc. It has played a great role in the improvement of horse breeds in the Central Plains. Sheep breeds in the Central Plains originally belonged to the Qiang sheep line. With the increase of communication between nomadic people in the Central Plains and the North, North China has become an important spreading place of Mongolian sheep, and the sheep breeds in the Central Plains have been improved, which is very different from the original sheep breeds. Hu sheep is a famous local breed in Taihu Lake basin, and it is also bred on the basis of Mongolian sheep. Tong sheep bred in Shaanxi during the Tang and Song Dynasties have the blood of Qiang sheep, Mongolian sheep and big-tailed sheep in the western regions. Wait a minute. Animal husbandry technology in pastoral areas also has an impact on agricultural areas. Riding was introduced to the Central Plains from the northern grassland nationalities, and "Khufu Riding and Shooting" is one of the outstanding projects. These technologies are often spread to people in pastoral areas of the Central Plains through internal migration, capture and being plundered as slaves. Jin Ridi, the horse supervisor of Emperor Wu of the Han Dynasty, was a captured Hun. China ancient northern agricultural science and technology classic "Qi Yao Min Shu" described in detail the animal husbandry, health care and processing technology of livestock products such as horses, cattle and sheep, which was related to the large number of nomadic people entering the Central Plains at that time. These records should include the valuable experience of herders. For example, the book called sheep's suppurative disease and oral and buccal sores "turbid", which was obviously Hu Yu's transliteration. There are also many crops imported from nomadic areas in the Central Plains. In addition to grapes and alfalfa introduced before and after Zhang Qian's hollowing out, there are many crops and varieties named "Hu", such as Hu Gu, Hu, Hu Dou, Hu Ma, Hu Juglans, Hu Cong, Hu Garlic, etc. The tricks, deeds and other farm tools contained in this book should also come from the northeast ethnic areas.

In the past, the study of agricultural history often paid more attention to farming economy, but relatively ignored nomadic economy, which was a big defect. In this way, it is difficult to write a comprehensive agricultural history commensurate with a multi-ethnic unified country. For example, the conclusion that Chinese traditional agriculture is "single agriculture" or "lame agriculture" is incomplete in terms of agricultural areas, not to mention that it excludes the interdependence between nomadic economy developed in ancient China and agriculture and animal husbandry in agricultural areas! So it is acceptable to limit this theory to a certain period of time. If it is a summary of the whole traditional agriculture, isn't it suspected of being "single" or "lame"? Even if it is limited to the study of farming economy, it is difficult to fully explain its development mechanism and law without paying attention to the development and evolution of nomadic economy and its relationship with farming economy.