Climatic characteristics of ants in slight cold season

Climatic characteristics of slight cold solar terms;

During the slight cold season, most parts of China have entered a severe cold period, with frozen soil and rivers frozen. In addition, the cold air in the north continues to go south and the weather is cold. People call it "counting nine cold days"

Although it is not as cold in the south of our country as in the north, the temperature has dropped obviously. The coldest time in the south is slight cold, between rain and fright. It is dry and cold when it is a little cold, and it is wet and cold after the rain.

Slight cold, the 23rd solar term among the 24 solar terms in the lunar calendar, is also the fifth solar term in winter. It marks the official start of winter and is also the coldest day in a year. According to China's meteorological data, slight cold is the lowest temperature solar term, and the temperature of great cold is lower than slight cold in only a few years.

Xiao Han's main farming activities

1, animal husbandry

(1) Doors and windows of pigsty, cowshed and sheepfold should be closed properly to raise the temperature in pigsty. Cattle and sheep should go out late and return to pasture early.

(2) In order to improve the egg laying rate, professional breeders should add proper amount of brown sugar to drinking water to supplement the energy shortage caused by cold in winter and increase artificial illumination.

(3) Cattle and sheep should be raised artificially because of weeds withering. Goats, especially pregnant ewes, should supplement concentrate feed, and at the same time increase vitamin E and trace elements to prevent the occurrence of miscarriage of ewes.

(4) The cloven-hoofed livestock such as pigs, cattle and sheep should be immunized to prevent acute and severe infectious diseases from occurring due to infection from foreign foci.

(5) In particular, we should do a good job in the prevention and control of swine epidemic diarrhea, infectious gastroenteritis, infectious bronchitis, avian influenza and other diseases.

(6) Do a good job of ventilation and disinfection.

Step 2: vegetables

(1) Timely sowing and scientific management. Watermelons, zucchini and cucumbers in small and medium-sized greenhouses should be raised in nutrient bowls or squares in winter greenhouses or sunshine beds before and after slight cold. For cucumber with weak growth, overwintering crops such as tomatoes and hot (sweet) peppers should be combined with watering and topdressing.

(1) disease control. Due to rainy and foggy weather and high humidity in the shed, it is easy to induce gray mold, leaf mold, epidemic disease, downy mildew and powdery mildew of crops. Smoke agent or dust agent should be used in prevention and control, and pesticides should be used alternately to effectively improve the prevention and control effect.

3. Fruit trees

(1) Citrus: Continue to clear the garden in winter, cut off branches of pests and diseases, and spray 45% crystal sulfur mixture or pine alkali mixture to kill overwintering pests and diseases. Young trees are mainly shaped, and adult fruit trees are mainly pruned. Take anti-freezing measures such as rooting and whitewashing trunk, and irrigate moderately in case of drought. Xiuyuan Road and Irrigation and Drainage Ditch.

(2) Myrica rubra: Clear the snow in branches and leaves in time in snowy days to prevent damage or broken branches. Clear the garden in time, cut off pests and diseases, dead branches and weak branches, clean up fallen leaves and burn them in time to eliminate overwintering pests and diseases. Manual excision of moth cysts. Make preparations for the opening of the park. Dig planting holes and apply sufficient base fertilizer.

(3) Loquat: Before the spring buds germinate, the dense branches, weak branches, diseased branches and dead branches are deleted, and some perennial bent and weak branches are cut short. Pruning should be light, and the pruning amount should not exceed 10% of the total branches and leaves of the crown. We should continue to do a good job in clearing the garden, sweeping away garbage and reducing the base of pests and diseases. If there is branch rot, scrape it off in time, burn the scraped branch bark on the spot, and apply 50 times solution of 50% thiophanate-methyl wettable powder, or Bordeaux solution or lime sulfur slurry to the affected area. Moss and lichen on big branches can be controlled with 8- 10 times of pine alkali mixture. Ground cover can be used to prevent freezing, such as grass or plastic film.

(4) Grape: The best pruning period in winter is from the end of February to the beginning of 10. After defoliation, combine with winter pruning, cut off all kinds of pests and branches, eliminate residual branches, scrape off old bark and burn them centrally; Spray 50 times to 100 times of sodium chloride powder on the trunk, the cement column on the shelf surface and the road around the ground.

(5) Pear: Young trees should cultivate three main branches and do a good job of pulling branches. In order to make the adult branches achieve uniform results, the redundant flower buds should be properly sparse. Clean up the garden, scrape off the ring rot in time when it is found, and then disinfect the wound with 40 1 or 402 antibacterial agent 50 times or 1 old alkali and 10 water.

(6) Peach: continue shaping and pruning, and select scions. Remove the dead leaves and burn them. Continue to carry out fertilizer management, deep ploughing and soil improvement, water conservancy construction and road maintenance. The land of the new orchard has been leveled and planted at fixed points. Do a good job in seedling transportation and indoor seedling digging.