Vegetable cold and antifreeze technical measures

Affected by cold air, the temperature drop is large, and severe freezing may have a certain impact on vegetable production. The vegetable farmers are good at freezing and freezing vegetables.

First, strengthen coverage

Vegetables grown in open fields can be covered with rapeseed, straw, etc. to prevent freezing damage on vegetables and vegetables. Conditionally cover the small arch shed in time or use it as a wind barrier in the north of the vegetable garden to keep the wind and cold.

It is necessary to do windproof reinforcement work in greenhouse cultivation. It is found that the damaged shed film should be repaired in time, and the film edge connected to the ground should be compacted with mud to prevent cold air from being drilled into the shed. When the wind blows, the shed door and vent should be closed to prevent the clogging of the shed film from being tight or the rope is pulled down. It does not appear to be damaged, causing freezing damage. Conditionally, a small arch shed is placed in the shed, and the film is covered at night, and the film is covered with a straw curtain.

Second, cultivating soil

Combined with cultivating, the soil is cultivated at the roots, which can loosen the soil, protect the root system and enhance the root activity. The depth of cultivating is 7-10 cm.

Third, clearing the ditch, lifting the surface

Timely clearing ditch drainage, dredging the ditch, raising the kneading surface, enhancing the breathability of the kneading surface, improving the ground temperature, is conducive to the antifreeze and cold protection of vegetables, and is also beneficial to the anti-moisture and moisture prevention in the spring of next year.

Fourth, apply more organic fertilizer, less nitrogen fertilizer

Do not apply quick-acting nitrogen fertilizer such as urea before the low temperature, or apply a thin layer of grass ash between the vegetables and the line, or spray 0.2-0.3% potassium dihydrogen phosphate solution 1-2 times, while spraying the human waste water per acre. 400-500 kg.

Fifth, strengthen pest control

Vegetables are susceptible to a variety of diseases caused by low temperature freezing, and it is necessary to timely control diseases, remove diseased plants, diseased branches, diseased leaves, diseased flowers, and diseased fruits.

Sixth, timely harvest

Before the arrival of the strong cold current, the vegetables that have reached the requirements of the commodity should be harvested and listed in time.