The autumnal equinox is early and the first frost is late. What was wheat like at that time?

The autumnal equinox is early and the first frost is late, which is the time for cold dew to plant wheat.

This sentence refers to the three seasons of buckwheat planting. The autumnal equinox is earlier, and it is only planted in colder places, and it is planted later in the first frost. It can be planted in warmer places, and buckwheat is mostly planted in cold places. Because China has a vast territory and the climate in different regions is different, the time of sowing buckwheat is different in different places, so the proverbs and agricultural proverbs circulating in different places are also different.

In Hebei, Shaanxi and other areas north of the Yellow River Basin, the popular saying about planting buckwheat is that "the white dew is early, the cold dew is late, and the autumnal equinox is just the time to plant buckwheat", which means that planting wheat in the white dew solar terms is still a little early, while planting in the cold dew solar terms is a little late, and the good sowing time is in the autumnal equinox solar terms.

Introduction of solar terms:

Solar term is a special festival in the trunk and branch calendar that expresses the change of natural rhythm and establishes "December construction" (monthly order). The 24 solar terms are: beginning of spring, Rain, Sting, Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoxia, Daxia, beginning of autumn, Early Summer, Bailu, Autumn Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold.

"Twenty-four solar terms" is the product of ancient agricultural civilization and occupies an extremely important position in Chinese traditional agricultural society. Agricultural production is closely related to the rhythm of nature. It is a knowledge system formed by ancient ancestors who observed the movement of celestial bodies in agricultural time and realized the changing laws of one year, climate and phenology. Scientifically reveals the law of astronomical and meteorological changes, skillfully combines astronomy, agriculture, phenology and folk customs, and derives a large number of related seasonal cultures.