Main points of spring spinach planting management
Spinach is a cold-resistant vegetable, a long-day plant, is a commonly cultivated vegetable, and is an annual herb. Spinach has a well-developed root system and is rich in nutrients. It is a vegetable supplied in all seasons. From the perspective of cultivation time, spinach cultivation is generally divided into spring spinach, summer spinach, autumn spinach, and overwintering spinach. Spring spinach has a short growth period and can be harvested and marketed 30 to 50 days after sowing. The main diseases of spinach are downy mildew, virus disease, and anthracnose. The main pests are aphids and leaf miners.
Variety selection Early spring sowing should choose hardy varieties such as spinach spinach or sharp-leaf spinach.
For soil preparation and fertilization, spinach fields should be selected for fertile soil, good heat preservation and water retention. Before ploughing, apply 5-6 cubic meters of high-quality farm manure, 40 kg of compound fertilizer, intensive tillage and fine rake, leveling the border. When preparing the ground, keep a moderately spaced wind barrier against the cold.
When the average temperature drops to 17℃～19℃ on the day of planting in time, it is most suitable for planting. The method is: first soak the seeds in 35°C warm water for 12 hours, remove them to dry and sow or drill them, and then cover the soil and step on the seeds and sprinkle them with water. Then, sprinkle the poisonous bran with medicine on the surface to prevent underground pests such as mole crickets from harming the seedlings.
Cultivation management After the spinach sprouted out, a shallow hoe should be carried out to loosen the soil to play a role in weeding and moisture preservation. When the plant grows 3 to 4 leaves, keep the soil moist, and top-dress the fertilizer as appropriate; when the plant grows 5 to 6 leaves, it is about to stop growing, it should be watered with frozen water in time, and the soil surface should be diurnal when watering. Night freezing. Frozen water is used to use manure water, which will help spinach to turn green in early spring and accelerate its growth.
Pest control and pests of spinach in early spring mainly include anthracnose, downy mildew, virus disease and aphids. Downy mildew and anthracnose can be controlled by spraying 75% chlorothalonil 600 times liquid, 25% metalaxyl 700 times liquid, 40% ethyl phosphoric aluminum wettable powder 300 times liquid, etc. at the initial stage of onset. In addition to the implementation of crop rotation, virus diseases should also be controlled in time, such as aphids and other vectors. During the aphids bloom period, 10% imidacloprid 2000 times solution or 2% avermectin 2500 to 3000 times solution can be sprayed for prevention and control.
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