There are about 565,438+00 articles about animal husbandry and veterinary medicine that can be found in the bibliographies of past dynasties. The origin of the genre Moon Order can be traced back to Xia Zhengxiao in the pre-Qin period. Although this book does not have the name of the moon, it records the astronomical phenomena, phenology, farming, hunting, sericulture and political affairs for twelve months. After the Han Dynasty, the monthly agricultural books developed and evolved in content and genre. In addition to farmers' monthly books, they also used the form of season and year records. These monographs focus on varieties and appreciation, and their contents extend to all aspects of social life. There are about 20 kinds of agricultural books written in the genre of "Moon Order" in the past dynasties, among which Mao Cui's Moon Order for Four People in the Eastern Han Dynasty, Liang Zonggu's Chronicle of Jingchu's Age in the Southern Dynasty, Tang Han 'e's Four Seasons Compilation, and Yuan Lu Mingshan's A Brief Introduction to Agriculture, Mulberry and Food. Large-scale agricultural books, such as The Complete Book of Agricultural Administration in Ming Dynasty and General Examination of Giving Time in Qing Dynasty, and small-scale agricultural books, such as The History of Agriculture, Countryside and Farmers by Zhang Zongfa in Qing Dynasty, are devoted to the contents of the monthly order. In the Song Dynasty, specialized books such as Peony, Peony, Chrysanthemum and Lanmei appeared one after another. Because of its strong practicality, since the opening of Bamboo Slips in the Jin Dynasty, all kinds of farming activities have been carefully and comprehensively arranged in strict accordance with the principle of not violating the farming season, and have always been welcomed by the people. Handbook of modern agricultural science and technology, agricultural calendar, etc. , such as Fang Quan Bezu. In fact, it inherits some advantages of the moon genre.