Spinach can be divided into five varieties: root spinach, spinach, spring spinach, summer spinach and autumn spinach. Therefore, planting winter spinach should use cold-tolerant varieties such as spinach seed spinach or sharp-leaved spinach.
2, soil preparation and fertilization
The spinach field should choose a land with fertile soil and good water retention. Before the ploughing, the high-quality farmyard manure is 5-6 square meters, the compound fertilizer is 40 kilograms, the intensive cultivation is fine, and the sorghum is smoothed. When you are preparing the land, you should keep a good wind and wind barrier.
3, timely seeding
The wintering spinach has a strong cold resistance when it reaches 5-6 leaves before stopping growth. Therefore, when the average daily temperature drops to 17~19 °C, it is most suitable for planting. The method is as follows: firstly soak the seeds with warm water at 35 ° C for 12 hours, remove the dry and spread or broadcast, and then cover the soil with water after the sowing. Then, use the drug to mix the bran on the surface to prevent underground pests such as cockroaches from harming the seedlings.
4, winter management
After the spinach is germinated and unearthed, a shallow loose soil should be carried out to protect the grass. When the plant grows 3-4 leaves, keep the soil moist and topdress as appropriate; when the plant grows 5 to 6 leaves is about to stop growing, it is necessary to timely seal the frozen water, the timing of watering should be mastered in the soil surface Frozen at night. It is best to use frozen water for pouring frozen water, which is conducive to the accelerated growth of spinach in early spring.
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