How do hydroponic vegetables grow?

Hydroponic vegetables refers to a cultivation form in which most of the roots grow in layers of nutrient liquid and provide them with water, nutrients and oxygen only through the nutrient solution, of which leafy vegetables are the most common, such as lettuce, agaric, hollow cabbage, purple back cabbage, etc., and some fruit vegetables can also be hydroponized, such as cucumbers, melons, tomatoes and so on. Let's take a look at how to grow hydroponic vegetables.

What are the characteristics of hydroponic vegetables?

The main results are as follows: 1. the root system is mainly milky white capillary root, which is used to absorb water and nutrition.

2. The root system adapts to the aquatic environment, and there are some aerial roots in the periphery to absorb oxygen.

3. The growth cycle of hydroponic vegetables is short and the market is early.

Root treatment of hydroponic vegetables

1. Wash off the soil or other cultivation substrates of the root system with clean water.

2. Cut off old or dead roots, dead skin and excess lateral roots.

3. The roots were soaked in hydroponic plant disinfectant for 15 minutes, sterilized and domesticated.

4. After rinsing with clean water for several times, it is planted on the cultivation container.

How to grow hydroponic vegetables?

1. Water culture box: the main body of the water culture box is an impervious box, pots and wooden boxes can be used, preferably a polystyrene foam box, the box body is inlaid with a foam plastic floating board of the same length and width, which is used to carry small plastic bowls or cups containing vegetable seedlings and machines. the holes are punched on the floating board, and the pore diameter is just enough to hold the planting cup.

2. Matching nutrient solution: there are many formulations of hydroponic vegetable nutrient solution. The widely used formula of Versailles nutrient solution is 0.568 grams of potassium nitrate, 0.710 grams of calcium nitrate, 0.142 grams of ammonium phosphate, 0.284 grams of magnesium sulfate, 0.112 grams of ferric chloride, 0.00284 grams of potassium iodide, 0.00056 grams of boric acid, 0.00056 grams of zinc sulfate and 0.00056 grams of manganese sulfate.

3. Planting substrate: the seedlings can be cultivated with nutritious soil first, and planted at the stage from 2 leaves and 1 heart to 4 leaves and 1 heart. The planting substrate is prepared with peat and water-washed slag at 1:1. Punch a hole in the bottom of the planting cup, insert a non-woven strip about 2 cm wide and 10 cm long, and the length of the non-woven strip is about 3 cm. The substrate of 1 stroke 2 was first placed in the planting cup, then the vegetable seedlings were implanted, and then the substrate was planted.

4. seedling planting: when the seedlings are implanted, the roots of the seedlings are straight and not injured as far as possible, a half amount of nutrient solution is added into the water culture box, the planting cup is embedded in each hole of the floating board, and the non-woven strips should expose at least 3 cm to the bottom of the floating board. The planted floating board is embedded on the hydroponic tank, and the liquid level is adjusted so that the liquid level just touches the bottom of the planting cup.

What are the kinds of hydroponic vegetables?

1. Tomato: the hydroponic culture of tomato is generally carried out in the greenhouse, and this cultivation method can be carried out all the year round. The hydroponic culture of tomato in solar greenhouse can determine the arrangement of stubble according to the performance of greenhouse, which is mainly produced in winter and spring and early spring.

2. Balsam pear: bitter gourd is an annual climbing herb of Cucurbitaceae, with pilose stems, branches, petioles and pedicels, axillary tendrils, lax cultivation conditions, vigorous growth, strong fruit setting ability and long harvest time, so it is very suitable for hydroponic culture.

3. Eggplant: the area of eggplant cultivated in solar greenhouse and greenhouse has been expanding in recent years, but due to continuous cropping, diseases, especially soil-borne diseases, are serious. Hydroponic culture can overcome this problem, and it has gradually become popular in recent years.

4. Ginger: the traditional planting mode of continuous cropping of ginger can not remove the residual nematodes and the pathogen of ginger blast in the soil, so it is easy to be infected with ginger blast. Once infected with ginger blast, a large area of plants will wither and die. Hydroponic culture can solve this problem.

5. Cucumber: cucumber is often harmed by diseases and insect pests in production, but hydroponic culture can avoid soil infectious diseases and insect pests and continuous cropping obstacles, and has the characteristics of reducing pesticide dosage, improving crop yield and quality, saving fertilizer and labor, and not restricted by land fertility.