Autumn spinach is an overwintering vegetable harvested in autumn sowing seasons. It is wintered in November in northern regions such as Heilongjiang and returned to green in March and April in the second year of the second year. It lasted more than 100 days. Therefore, how to ensure safety in the long-term low temperature conditions? Winter is the key to winning a bumper harvest.
First, pouring frozen water pouring frozen water must be "certain", "two appropriate." "Determined" is based on the amount of soil moisture decided not to pouring frozen water. Generally, the absolute water content of sandy loam is less than 15%, the loam is less than 17%, and frozen water should be poured when the clay is below 20%. "Two kinds of fitness" means timely watering and proper watering. The suitable time for freezing and freezing water is that the soil can be thawed during the day and frozen at night. The proper amount of water means that the amount of frozen water cannot be too large or too small. It is generally appropriate to connect the bottom of the floor.
Second, chase well overwintering manure over winter fertilizer can increase soil nutrient content, play winter fertilizer spring, promote weak to strong effect. In particular, it is more important for less-fertilized, poorly-fertilized, and weak-seated vegetable plots. Therefore, should be combined with pouring frozen water topdressing overwintering fertilizer, usually mu urea 10 kg or ammonium sulfate 20 kg, with the water topdressing.
Third, covering the cold in the cold north of the absolute cold season is very unfavorable for the safe wintering of the seedlings, so the cover should be used to prevent cold, to ensure safe wintering seedlings. Coverage can generally be carried out after all the soil in the plough layer is frozen. Covers are organic fertilizers that have been broken down and finely crushed by farmhouse fertilizers. About 1,000 kilograms of mu can be sprinkled.
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