Spinach can be divided into roots and spinach, buried spinach, spring spinach, summer spinach and autumn spinach five varieties, planting winter spinach should be used spiny seed spinach or spinach and other cold-resistant varieties. Its cultivation techniques are as follows.

(1) Fertilization for soil preparation

The field of fertile soil, good thermal insulation and water retention should be selected in the field of spinach. Before ploughing, 5-6 cubic meters of high-quality farmyard fertilizer per acre, 40 kg of compound fertilizer, intensive cultivation, and leveling cultivation. Make sure to keep a moderately clear wind barrier when setting up the site.

(2) timely sowing

Before wintering spinach stopped growing, only when the plants reached 5 -6 leaves had a strong cold tolerance. Therefore, when the average temperature falls to 17 -19 degrees Celsius on the day, it is best to sow. The method is: first soak the seed in warm water at 35 degrees Celsius for 12 hours, remove and dry it, broadcast or broadcast, and step on the soil after the sowing. Then, a drug-mixed poison drum was sprinkled on the surface to prevent the aphids and other underground pests from harming the seedlings.

(3) Pre-winter management

After the spinach is sprouted and unearthed, it is necessary to carry out shallow hoeing for 1 time so as to play a role in weed control and preservation. When the plant grows 3 -4 leaves, keep the soil moist and apply the fertilizer as appropriate: When the plant grows 5 - 6 leaves, and is about to stop growing, it is necessary to seal the frozen water in time, and the timing of watering should be controlled on the soil surface. Night freeze. Pouring water is best to use manure, which is conducive to early growth of spinach.

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