Autumn and winter vegetables in the cultivation process, often with the impact of low temperature frost, vegetables are not easy to grow, reduce the quality of vegetables, so we must do a good job of vegetable frost insulation work, the approach is as follows:
Strengthen post-plant fertilizer and water management. Seven days after the transplanting of the vegetables, 700-1000 kilograms of biogas or 700-1000 kilograms of decomposed manure urine per acre will be used to raise the seedlings, promote the normal growth of the vegetables, and improve the ability to resist cold and freeze. Timely dredge the three ditch to prevent stagnant water from causing freezing damage to vegetables.
Increase the use of good heat and good ventilation. Chicken manure is a thermal fertilizer, cow dung is a breathable fertilizer, increased chicken manure, cow dung, to enhance the vegetable's endothermic nature of the soil, is very conducive to the growth and development of seedlings.
Shallow cultivator frost protection. Autumn and winter vegetables after the survival of shallow cultivator can not only break the cracks in the surface, but also control the groundwater vapor to take away the heat, to protect the larvae, heat preservation of antifreeze and seedlings.
Spraying foliar fertilizer to prevent freezing. According to different vegetable varieties, timely supplement the calcium, boron, iron and other trace elements needed for vegetables, increase the hardness of the leaf, increase the cold resistance of the vegetables, and reduce the degree of cold damage.
Spread grass ash, straw blankets and other coverings, uncovering night cover antifreeze insulation. In addition to supplying potassium to vegetables, herbicide ash can effectively protect vegetables from freezing. The temperature at night is below 10°C, and the effect of frost-proof insulation on blankets, mulches, etc. is better. However, the daily exposure should be improved. Night cover.
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