Recently, the cultivation of vegetables in the facilities affected by the wind and cold weather has been affected to some extent. For vegetables that are not damaged or lightly damaged, spray 2~3 times potassium dihydrogen phosphate solution as appropriate; spray 2~3 times urea solution on nitrogen-deficient plants, pay attention to soil after application to avoid ammonia under closed conditions Volatile volatile seedlings. If you have the conditions for rapid planting of fast-growing vegetables, you can replant or rush fast-growing vegetables in time to get the best time to market.
Scientific disaster prevention measures. Before the onset of the cold wave, we must first strengthen the greenhouse facilities in time to remove snow and debris from the greenhouses and prevent the greenhouse from collapsing. It is necessary to pay attention to the drainage of the surrounding ditch to reduce the humidity in the shed and prevent the occurrence of diseases. In addition, it is also possible to add a small arch shed in the greenhouse, cover multiple layers of cold insulation facilities at night, and remove the cover during the day to increase the illumination. After the snow or after a cloudy day, it should be gradually exposed to prevent the plants from "sparkling" due to the sudden loss of water. Leafy vegetables have the most demand for nitrogen. It is recommended that spraying urea aqueous solution + photosynthetic nutrient film fertilizer can help plants absorb a large amount of light fertilizer, light energy, light, compatible with conventional fertilizers and nutrients to supply plant growth and development to the limit. Rhizome vegetables require a large amount of elements such as phosphorus and potassium, and spray potassium dihydrogen phosphate aqueous solution to promote the absorption of potassium by plants.
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