A complete collection of overwintering methods for crops

With the arrival of winter every year, the temperature drops, the weather is cold, and the grain in the cultivation process will be frozen if it is slightly careless, affecting the yield after spring. In order to prevent the grain from freezing damage in the winter process, the following methods are introduced to prevent freezing damage, and farmers can adopt them according to actual conditions.

I. Windbreak Law

The method is to make windbreaks 1~1.5 meters high with straw adjacent to vegetable beds, and set up a windbreak every 3~4 beds.

II. Covering method

In the afternoon before frost, straw, straw, etc. are covered on vegetable beds and vegetables to reduce mechanical damage from wind and cold, with 100 kg of straw per mu. Vegetables should be sparsely scattered and must not be completely covered to prevent interference with photosynthesis.

III. Winter Irrigation Method

Irrigation before frost can increase the temperature by 2℃~3℃ after cold spell.

IV. Cultivation

Combined with intertillage before freezing, root cultivation with broken soil can loosen the soil, improve the soil temperature, and directly protect the roots. However, intertillage and cultivation must be carried out before the soil freezes, and the depth should be 7~10 cm.

V. Trenching and Drainage Method

Open the "three ditches" to ensure that the ditches, canals and fields are unblocked in order to remove frozen water in time.

VI. Ash scattering method

One is to sprinkle a thin layer of plant ash on vegetables before low temperature freezing injury; the other is to sprinkle plant ash between rows.

7. Applying organic fertilizer and spraying nutrient solution

Before frost, keep warm farm manure such as pig dung or soil miscellaneous fertilizer, circle culture at the root of vegetable tree, can raise the soil temperature by 2℃~3℃, apply dressing should be carried out in sunny days, 1000~1500 kg per mu. At the same time, spraying "Yunda 120" brassin, green fenwei, Aiduoshou and other plant nutrient solutions to improve the cold resistance of plants.

VIII. Fumigation

With weeds, straw, dead branches, fallen leaves, etc. stacked around the vegetable field, frost before the arrival of the wind in the corner smoke, can disperse the cold current. But don't burn vegetables.

IX. Nitrogen control method

The seedling stage appropriate reduction nitrogen fertilizer quantity, must not be partial nitrogen fertilizer, lest the plant cold resistance is poor. Top dressing should be applied early to make the vegetable seedlings strong. Before low temperature comes, do not apply quick-acting nitrogen fertilizer, and apply phosphorus and potassium fertilizer once to enhance the cold resistance of vegetables.

Although there have long been folk proverbs such as "auspicious snow heralds abundant years" and "winter cold and autumn prosperity", in fact, we must not be careless about winter cold work. Auspicious snow and winter cold can freeze winter pests, but as the so-called "extremes must be reversed", if not prevented and controlled, cold weather will also freeze winter crops. Therefore, it is particularly important to prevent the occurrence of freezing damage.