What farming activities are there in the four seasons of Tianjia Four Seasons Song?

Among Tianjia's Four Seasons Songs, the farming activities in the four seasons are: sericulture, transplanting, farming and harvesting rice; The original text of "Tian Jia Four Seasons Song" is as follows:

In spring, the spring breeze blows,

The grass is green and butterflies are flying.

How tender the wheat seedlings are and how fat the mulberry leaves are.

Summer, busy farming,

Silkworms were picked and transplanted.

Get up early and get greedy, and come back to wear moonlight.

In autumn, rice appeared.

The valley is as fragrant as gold.

Although the body is hard, the heart is happy.

In winter, it snows in Chu Qing.

The new cotton-padded coat is warm and light.

After a year of farming, everyone is smiling.

Extended data:

In China, January, February and March of the lunar calendar are regarded as spring. Astronomy regards the vernal equinox as the beginning of spring. In climatology, the five-day average temperature is used as the unified standard for dividing seasons. When the five-day average temperature rises to 10℃, winter ends and spring begins.

According to this standard, most of the spring in the middle and lower reaches of the Yellow River is from late March to early April, that is, around Tomb-Sweeping Day, and the four solar terms of beginning of spring, rain, fright and vernal equinox still belong to the winter category.

As the saying goes: "Spring hits five Kyubi no Youko, and spring hits six or nine heads." In other words, the days of beginning of spring are not in Kyubi no Youko, but in Liujiutou. After beginning of spring, the days became longer, the temperature rose slowly, the soil began to thaw from the lower layer, and the frozen soil became shallower. During this period, there is still a strong cold wave, the weather is dry, and there are often strong winds and snowfall.