Key points of cultivation techniques for water spinach

[ Agricultural Products ] Water spinach is a genus of genus, also known as leeks, bamboo leaves, and cabbage. It is famous for its hollow stalks and is one of the main green leafy vegetables in summer and autumn. Let's take a look at the technical points of cultivation of water-watered vegetables:

1, nursery

The sowing time of hydroponic water spinach seedlings is generally in the middle and late March, with 10 kg per 667 m2, and the greenhouse cultivation can be used to plant a hydroponic area of ​​0.7 hm2. Deeply pour the soil before sowing, apply 10 t of biogas slurry per 667 m2, mix with the soil and plow the whole. First, before sowing seed treatment, i.e. 55 ℃ warm water soak 20 min, then washed with water Soaking 20 h, kept moist after picked clean, washed with water every day 1 seed. Seeds can be sown after the seeds are peeled off. One day before sowing, the bottom water should be poured and covered after sowing. Apply 15% of the biogas slurry to the seedling stage for 1~2 times, keep the field moist, and weed it in time.

2, the production of hydroponics floating bed

The foam board floating bed used in my country has a foam board thickness of 2 cm, a length of 1.2 m and a width of 0.8 m. The row spacing between the anchoring points is 16 cm × 16 cm, and the diameter of the anchoring hole is 2 cm. It is usually completed before planting from late April to early May. The foam board is connected with bamboo and nylon rope, and is fastened and fixed on the bamboo pile with No. 6 wire. The distance between the bamboo piles is generally 10~15 m. Foam floating bed spacing between 0.4 m and 1.0 m is conducive to small wooden boat harvesting. The bank is kept at a distance of more than 1.5 m to prevent pests from invading the floating bed. Foam board floating bed costs about 6,000 yuan per 667 m2, 3 a, and the cost of floating bed is about 2,000 yuan per year.

3, colonization

The local area is generally cultivated after 4-20 days. When the seedlings are 20~25 cm long, they can be planted on the floating bed. The seedlings are filled with water 1 day before the planting. If the soil is wet, the seedlings will not damage the roots. The extracted roots of the seedlings are washed away with water and can be planted on a floating bed. If the extracted seedlings are not transplanted in time, the roots can be stored in clean water for a few days.

4. Application and management of biogas slurry

Because the pond of hydroponic water spinach is far away from domestic sewage, the nitrogen, phosphorus, potassium and other nutrients in the water are very little, and the growth of the water spinach requires a large amount of fertilizer, especially the amount of nitrogen fertilizer required. To this end, we used the biogas slurry of the nearby biogas station in the concentrated farm of Luanchuan as a nutrient solution, and purchased a biogas slurry for the biogas slurry with a volume of 5 t. Each 667 m2 of hydroponic water spinach needs to absorb about 1 t of biogas slurry every day. Apply biogas slurry 2~3 times every 1 week, 667 m2 each time with biogas slurry 1~3 t. The temperature in the early and late stages is low, the amount is small, and the amount used in the growing season is large. From the time of planting to the end of harvesting, about 150 tons of biogas slurry is needed for every 667 m2 to meet the nutritional needs of hydroponic water spinach.

Hydroponics can not be watered, weeded, or fight drugs. The management is relatively simple, but the pH value of water should be measured frequently. The water spinach can grow normally at pH 5.5~7.5. When the pH value is greater than 8, the leaves will be lacking. Iron yellowing, 96% phosphoric acid can be used to adjust the pH of the water to normal, and ferric sulfate can also be used for foliar spray, the effect is obvious.

5, harvest

Generally, when the hydroponic water spinach is planted one month later and the seedling height is 40~50 cm, D1茬 can be harvested. Do not use any tools when harvesting, as long as the hand is cut off from the second stem section above the water surface. Pick it every 10~20 days later. The higher the temperature, the stronger the growth, the appropriate interval for harvesting, and the slow growth in cold weather. It takes more than 20 days to harvest once. It can be harvested 6 times throughout the growing season and ends in mid-October. The output per 667 m2 is around 5,000 kg. The harvested hollow vegetables should be arranged into 500 g each for easy sale.

The above water-cured vegetable cultivation technology is for your reference, and we welcome your comments and interaction!