Autumn spinach wintering seedling protection technology

Autumn spinach is the wintering vegetable harvested in autumn, from the end of November to the second year of March, and the time is more than 100 days. Therefore, under the condition of long-term low-temperature drying, how to ensure safe wintering is the key to harvesting harvest. .

First, pour the frozen water

Pouring frozen water must be “certain” and “two suitable”. “Must” is based on the amount of soil water content, decided not to pour the frozen water. Generally, the absolute water content of sandy loam is less than 15%, the loam is less than 17%, and the frozen water should be poured when the clay is less than 20%. “Two suitable” is timely watering and proper watering. The appropriate time for pouring the frozen water is that the soil layer can be frozen during the day and frozen at night. Appropriate amount of watering means that the amount of frozen water cannot be too large or too small. It is generally appropriate to connect the bottom.

Second, catch up with winter fertilizer

The application of wintering fertilizer can increase the soil nutrient content, and play the role of winter fertilizer and spring, promoting weakening and strengthening. Especially for vegetable fields with less base fertilizer, poor soil fertility and weak seedlings. Therefore, the wintering fertilizer should be applied in combination with the frozen water, and the urea is usually applied with 10 kg of urea or 20 kg of ammonium sulfate.

Third, covering the cold

The absolute low temperature during the severe cold period in the northern part is very unfavorable for the safe wintering of the vegetable seedlings. Therefore, the cover should be used to prevent cold and ensure the seedlings are safe for winter. Coverage can generally be carried out after all the ploughed soil has been frozen. The covering is a farmer's fertilizer rich in organic matter and crushed and finely smashed.

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