How to plant water spinach in winter

Planting points: Water spinach likes high temperatures and humidity, has strong heat resistance, and is not frost-tolerant. The stems and leaves will wither when exposed to frost. The suitable growth temperature is 25-30℃, and the growth will be stagnant below 10℃. In winter, plastic greenhouses are used for off-season cultivation.

Planting steps:

1. Land preparation and fertilization: Water spinach grows quickly, has strong branching ability, and requires more fertilizer and water. It is advisable to apply sufficient base fertilizer when planting. Generally, decomposed organic fertilizer is applied per acre. 1,500 to 2,000 kilograms and 100 kilograms of plant ash are fully mixed with the soil to form a border of 20 cm high and 130 to 150 cm wide.

2. Seed soaking and germination: The seed coat of water spinach seeds is thick and hard. If sown directly, germination will be slow due to low temperature. After germination and germination, soak the seeds in warm water of about 30℃ for 18 to 20 hours, and then use Wrap them in gauze and place them at 30°C for germination. When 50 to 60% of the seeds are white, they can be sown.

3. Sowing details: The amount of seed per acre is 15 to 20 kilograms. Water spinach can be sown by broadcast or drill. After sowing, cover it with fine soil to a thickness of about 1 cm. Drill sowing can be done at intervals on the border. Dig a shallow trench 2 to 3 cm deep 15 cm across, spread the seeds evenly in the trench, cover it with fine soil, then cover the border surface with a sunshade net, pour water, and uncover the sunshade net after the seedlings emerge.

4. When water spinach plants grow to a height of 35 cm, they should be harvested in time. Harvesting is generally 35 to 45 days after sowing.

Extended information:

Precautions for fertilizing water spinach

1. Water spinach has a large demand for nitrogen fertilizer, but nitrogen fertilizer, especially nitrate nitrogen fertilizer, should not be applied excessively, otherwise it will As a result, water spinach products contain excessive nitrate content.

2. Water spinach has a long growth period and is harvested multiple times, so it has a large demand for fertilizers. Therefore, it is necessary to pay attention to applying sufficient base fertilizer, especially organic fertilizer, to prevent water spinach from losing fertilizer in the later harvest and affecting the yield.

Notes on planting water spinach:

1. Temperature: Water spinach likes temperature and is afraid of cold. The optimum temperature for seed germination is 20-35`C, and the optimum temperature for stem and leaf growth is 25-30°C. Growth slows down below 15°C and stops growing below 10°C.

It is not frost tolerant and the stems and leaves will die when exposed to frost. It can withstand high temperatures of 35-40℃ and still grows vigorously in the hot season of midsummer. It can be planted in spring, summer and autumn in areas with long frost-free period and high temperature. ?

2. Humidity: Water spinach likes water and grows well under high air humidity and soil moisture. It grows slowly under high temperature and dry conditions, and the quality and yield decrease. ?

3. Light: Water spinach is a short-day plant that blooms and bears fruit under short-day conditions. The seedlings prefer sufficient light during the seedling stage. When the light is insufficient, the seedlings will be weak and prone to leggy growth. ?

4. Soil nutrition: Water spinach can be grown continuously and likes fertile soil rich in organic matter. As the leaves and shoots of the plant grow rapidly, the requirements for fertilizers are higher.

The seedling stage requires a large amount of nitrogen and potassium fertilizers. The absorption ratio of nitrogen, phosphorus and potassium is 3:1:5. In the late growth period (when harvesting), the absorption ratio of nitrogen, phosphorus and potassium is 4. : 1:8. Therefore, top dressing should be balanced and nitrogen fertilizer should be applied appropriately. ?

The nutritional value of water spinach

1. Water spinach is an alkaline food and contains potassium, chlorine and other elements that regulate water balance. After eating, it can reduce the acidity of the intestines and prevent intestinal tract disease. The imbalance of flora in the tract is beneficial to cancer prevention.

2. The niacin and vitamin C contained in it can lower cholesterol and triglycerides, and have the effect of lowering fat and losing weight. The chlorophyll in water spinach is known as the "green elf", which can clean teeth, prevent cavities, remove bad breath, and strengthen the skin.

3. Water spinach is rich in crude cellulose. This dietary fiber is composed of cellulose, hemicellulose, lignin, glue and pectin, which can promote intestinal peristalsis, laxative and detoxification. effect.

4. Water spinach is cool in nature, and its juice has an inhibitory effect on Staphylococcus aureus, Streptococcus, etc., and can prevent infection. Therefore, if eaten regularly in summer, it can prevent heatstroke and relieve fever, cool blood and detoxify, and prevent and treat dysentery.

The protein content in the young shoots is 4 times higher than the same amount of tomatoes, the calcium content is more than 12 times higher than that of tomatoes, and it contains more carotene

Baidu Encyclopedia - Sowing water spinach and seedlings