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Antifreeze method for winter vegetables
1, control N method: appropriate reduction in the amount of N fertilizer at the seedling stage, must not be partial N fertilizer, so as to avoid cold plants to engage in poor. Top dressing is early to promote the robustness of vegetable seedlings. Before low temperature, do not use fast-acting N fertilizer, apply top-dressing PK fertilizer to enhance cold resistance. 2. Apply organic fertilizer and spray nutrient solution: Insulation farmyard manure such as pig cow dung or earth miscellaneous fertilizer is used to circulate and cultivate roots at the roots of vegetables, and the soil temperature can be increased by 2-3 degrees. The application should be carried out on sunny days. Mu 1000-1500kg. Simultaneously spraying the "cloud 120" brassin, plant dragon, green Fenwei, love more than other plant nutrient solution, in order to improve the plant's ability to resist cold. 3. The method of pouring manure: combine cultivator before thawing, cultivate roots with crushed soil, make soil loose, increase soil temperature, and protect roots directly, but cultivating soil must be carried out before soil is frozen, and the depth should be 7-10cm. . 4. Earthing method: combined with cultivator before freezing and cultivating roots with smashed soil, the soil can be loosened, the soil temperature can be raised, and the roots can be directly protected, but the cultivator soil must be carried out before the soil is frozen, and the depth should be 7-10cm. 5, cover method: in the afternoon before the onset of frost, with straw, straw, etc. covered in vegetables and vegetables, can reduce wind and cold mechanical damage, mu with 100kg straw. To sparsely disperse, must not cover all vegetables to prevent affecting photosynthesis. 6, ash method: First, in the cold before the advent of cold damage on the vegetables sprinkle a thin layer of shell ash or plant ash; the second is to spread grass ash between the rows. 7, smoke method: with weeds, straw, dry branches, fallen leaves and other piled up in the field around the field, the frost came before the advent of smoke at the tip of the wind, can disperse the cold. However, prevent vegetable burns. 8. Wind barrier method: A 1-1.5m high windbreak is placed on the vegetable straw adjacent to the straw, and a windbreak is set every 3-4 inches. 9, winter irrigation method: irrigation before frost, cold, can make the temperature rise 2-3 degrees. 10. Drainage Drainage Method: Open "Three Ditches" to ensure that the ditch, canal, and field are unblocked so that the frozen water can be eliminated promptly.
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