Convolvulus is also known as leeks, vegetables, or rattan dishes. It is a fast-growing green leaf vegetable that has been introduced throughout the country in recent years. The technical points are as follows: 1. Seeding: Live direct seeding, seedling transplanting, and sowing time are usually in mid-late April. The live broadcast can be drilled or on-demand, spaced 30 to 35 centimeters apart, 15 to 20 centimeters from each hole, 3 to 4 seeds per hole, soaked immediately after sowing, and they can emerge in about 7 days; they can also be seeded and planted. 17 to 20 cm high harvest time. After sowing, the covered plastic film is warmed and moistened, and the film is removed after the seedlings are unearthed. In addition, it is also possible to extract about 15 cm of tip shoots during the growth period. If the soil moisture in the field is suitable, the shooter will grow adventitious roots quickly and shoot new shoots. 2. Planting and Management: The requirements of soil conditions for the water spinach are not strict. We should choose the clay soil with low topography and moist and fertile soil. In the early stage, the soil should be ploughed in time to increase the ground temperature. In summer, the temperature is high, the plants grow fast, and the amount of water required for fertilizers is large. It is necessary to diligently water and pour large water (air drying, insufficient soil moisture, which can easily lead to increase of spinach fibers, affect yield and quality), and combine top dressing with watering. . In autumn, the temperature turns cold, and we must timely cultivating weeds and top dressings, and pay attention to the control of red spiders and other pests. The harvest time of the water spinach is long, and after each harvest, it is necessary to combine watering with 10 kg of ammonium sulfate. 3. Harvest: timely harvest is the key to high yield and quality of spinach. In production, it is generally harvested when the seedling height is about 20 to 30 cm. During the first and second harvest, the stem base should leave 2-3 knots to facilitate germination of the new shoots after harvesting, promote lateral branching, and strive for high yield. After harvesting 3 to 4 times, the plants should be re-harvested once, that is, only 1 or 2 nodes are left at the base of the stem to prevent the occurrence of excessive collaterals, resulting in sluggish growth.
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