What farming activities are there before and after the first frost?

1. Most of the northern areas in this period have been harvested in autumn, and even cold-resistant onions can no longer grow, because "the first frost can't support onions, and the longer they grow, the more empty they become." Chinese cabbage in North China is about to be harvested, and farmers in the middle and lower reaches and southern areas should strengthen post-management and timely sow winter wheat and rape, and intertillage to weed and prevent aphids.

In the south, this is the peak season in Sanqiu. Harvesting single-season hybrid rice and late rice, planting early-crop wheat, planting early-crop rape, picking cotton, pulling cotton stalks, and ploughing and soil preparation. "Pull the straw all over the floor, and you will get sick in the future." After harvesting, straw and stubble should be recovered in time, because there are many wintering eggs and germs hidden there.

Deep tillage is beneficial to reduce the accumulation of reducing harmful substances and maintain soil health. In addition, most areas of our country have begun to enter the dry season, so we should attach great importance to forest protection and fire prevention.

3. At the same time, the first frost is also a good time to raise sheep in Huanghuai Valley. "The first frost breeds clear milk, and the grass is born." Generally, ewes are in estrus in autumn and winter, and the duration of mating with rams is about 30 hours. Just like white deer breeding in the south, when the lamb is born, the weather is warm, the grass is tender, the ewe is well nourished and the milk is sufficient, so the lamb can be milked well.

Don't forget to prevent frost after the autumn harvest. It is necessary to plant early in time and stagger the late autumn frost period; Try to choose early-maturing and high-yielding varieties. Often watered, dry heat dissipates faster than wet heat, and crops are more vulnerable. Smoked smoke can form heat preservation clouds in a small area, reducing freezing damage; Regular hoeing can increase the ground temperature; Apply sodium humate or phosphate fertilizer to make crops mature ahead of time.

In addition, the use of greenhouse can protect crops from freezing injury to a greater extent. Protect the fruits and vegetables in the greenhouse and water them with topdressing to prevent pests. Greenhouse can not only resist natural disasters, droughts and floods, but also advance or postpone cultivation, prolong the growth period of crops, and achieve the purpose of early or late maturity, increasing production and stabilizing production.

In the first frost season, greenhouse vegetables such as tomatoes, cucumbers, eggplant, peppers and other warm crops should be strengthened in autumn, watered in time and harvested in time; Cold-resistant vegetables such as celery, lettuce, rape and radish should be watered and protected from insects.

Refer to the above? Baidu encyclopedia-first frost