Vegetable cold protection technology
Vegetables are more sensitive to low temperatures, and they are susceptible to frostbite when they encounter low-temperature vegetables, and are even frozen to death. Now introduce several vegetable cold protection technology. Cultivating earth. In combination with cultivator before freezing, the soil is cultured on the root side, which can loosen the soil, protect the root system, and enhance the vitality of the root system. The cultivator depth should be 7-10 cm. Qinggou drains and raises the temperature. Rainy weather, high humidity in the field, and lack of light are detrimental to the growth and development of vegetables. At this time, the management focuses on freezing and warmth, clearing trenches, clearing the trenches, gutters, gutters, and lift off the car. This will enhance the air permeability of the car and improve the ground temperature. It will not only be beneficial to winter freezing and cold, but also beneficial to the coming spring. Moisturizing and moisture proof. More organic fertilizer, less nitrogen fertilizer. 0.2%--0.3% potassium dihydrogen phosphate aqueous solution sprayed at low temperature before 1--2 times, can enhance the cold resistance of vegetables. Spreading 400--500 kilograms of thin human and animal waste water per acre can reduce soil freezing and improve the ability of vegetable roots to resist cold. Smoke or wind barriers. Before the advent of frost, the accumulation of weeds, straw, litter and other accumulations of smoke in the upwind can effectively disperse the cold currents and protect the vegetables from freezing damage. It is also necessary to prepare 1-1.5-meter-high windbreaks on the north side of the vegetable plots to prevent the cold wind from directly invading the vegetables and reducing frost damage. In addition, in the 3-4 days before the onset of the cold current, sunny day spraying 30--40 times of the vegetable plant oil suppressant is conducive to reducing the transpiration of the leaves and protect the body temperature. China Agricultural Network Editor