Can you eat soilless vegetables How about the market

Soilless cultivation of vegetables, in fact, there are not many countries in the world that are popular; One of the most prominent problems is the high cost and large one-time investment; Not everyone can accept it. Whether soilless vegetables can be eaten is still in the exploration stage. In addition, the prevention and control of pests and diseases in soilless vegetables, the disinfection of cultivation substrate and nutrient solution, and the treatment of waste substrate also need to be further studied.

Soilless facility agriculture is currently difficult to replace soil cultivation.

Soilless cultivation is just a cultivation mode, but it does not mean that it is better than soil culture; It is necessary to choose the appropriate cultivation method according to the actual situation, and it is not recommended to give up the existing favorable conditions for soil cultivation and develop soilless agriculture. Soilless cultivation can generally be used in places that are not suitable for agricultural production, such as deserts, saline-alkali land, Gobi desert, barren mountain islands, beach gravel land and barren land; This point has important development and utilization value for countries and regions where land resources are scarce.

Soilless cultivation is harmless. At present, there are no cases of physical injury caused by eating vegetables grown in soilless culture, and in this understanding of people's common sense, they always think that there will be problems with the nutrient solution of soilless culture. The configuration of nutrient solution is scientific, not free matching.

It is also adjusted according to the proportion of different nutrients absorbed by different crops, such as tomatoes and cucumbers, which need different proportions of nutrient solution components. There are also insecure factors, but they are all external influences.

In soilless systems, the nutrient solution is generally placed in a nutrient solution tank. The construction of the nutrient solution pond is generally in the underground of the greenhouse, and its construction is mainly composed of brick-concrete structure and waterproof facilities, which is generally very simple.

At the top, there is a mouth for injecting liquid, that is, the nutrient solution is added to this mouth after it is mixed. In the process of this operation, it is also possible that the nutrient solution may be contaminated due to the negligence of the staff. Here you need to follow the relevant rules and regulations to reduce the probability of pollution.

On the question of whether soilless crops are safe, the main core is whether the nutrient solution is safe, because it is these elements that the crop needs to grow, just like it needs these elements to grow in the soil, but they are different, one is obtained from the soil, and the other is obtained from the nutrient solution.

It is just a change in the different environments required for the growth of crops, and the nutrients required for its growth have not changed for the better, so soilless crops are also a safe planting mode.

1. Soilless hydroponics: lettuce, rape, celery, beets, water spinach, leeks, garlic sprouts, amaranth, etc.

2. Rock wool cultivation: tomatoes, cucumbers, bitter gourds, zucchini, bell peppers, etc.

3. Substrate cultivation: potatoes, radish, bell peppers, peppers, tomatoes, eggplants, etc.

Advantages of soilless cultivation of vegetables.

1. It can improve yield: the various nutrients required by crops in soilless cultivation are artificially prepared into nutrient solution and applied, which can be scientifically optimized according to the type of crop and the different growth stages of the same crop, so the crop grows and develops robustly and has strong growth potential.

2. Clean and hygienic environment: soilless cultivation uses inorganic fertilizer, and soil cultivation applies organic fertilizer and fertilizer decomposition and fermentation, which produces odor and pollutes the environment, and will also make the eggs of many pests breed and harm crops, so soilless cultivation does not have these problems.

3. Water-saving, fertilizer-saving, labor-saving: soilless cultivation does not require cultivating, ploughing, hoeing and other operations, which is labor-saving and labor-saving. Watering and topdressing are solved at the same time, and they are regularly and quantitatively supplied by the liquid supply system, which will not cause waste, and the management is very convenient, which greatly reduces the labor intensity.

Summary. Investment and profit of soilless vegetables: As long as the technology of soilless vegetables is good, the profit is still very high.

Soilless cultivation is not limited by season, region and variety, and all localities can produce all kinds of vegetables, fruits and flowers all year round. Only a small amount of input can be used to produce a variety of pollution-free melons and vegetables with high efficiency and low cost. One acre of simple and efficient soilless cultivation can generally make an annual profit of 5-100,000 yuan, and the high one can reach 200,000 yuan, and one person manages 3-4 acres, with an annual output of hundreds of thousands of catties of melons and vegetables, and can make a profit of hundreds of thousands of yuan.

Even according to ordinary melons and vegetables, its profit can reach more than 10 times that of ordinary greenhouse planting. The investment is mainly to build greenhouses, the south to build an acre of greenhouses need about 5,000 yuan, the north is about 12,000 yuan, the existing melon, vegetables and flowers greenhouses can be used directly, the materials needed include cultivation racks, nutrient solution delivery pipeline system, substrate and so on.

Investment and profit of soilless vegetables: As long as the technology of soilless vegetables is good, the profit is still very high. Soilless cultivation is not limited by season, region and variety, and all localities can produce all kinds of vegetables, fruits, and flowers all year round and out of season.

Only a small amount of input can be used to produce a variety of pollution-free melons and vegetables with high efficiency and low cost. One acre of simple and efficient soilless cultivation, generally take the hole can make an annual profit of 5-100,000 yuan, the high can reach 200,000 yuan, a person manages 3-4 acres, with an annual output of hundreds of thousands of catties of melons and vegetables, and can make a profit of hundreds of thousands of yuan. Even according to ordinary melons and vegetables, its profit can reach more than 10 times that of ordinary greenhouse planting.

The investment is mainly to build greenhouses, the south needs about 5,000 yuan to build an acre of greenhouses, about 12,000 yuan in the north, the existing greenhouses can be used directly, and the required materials are hidden cracks including cultivation racks, nutrient solution delivery pipeline systems, substrates, etc.

Can the southern typhoon multi-greenhouse work?

Where there are many typhoons in the south, the construction intensity is a little higher.

Typhoon-resistant.

The difference between soilless culture and soil cultivation is the environment in which plants grow, and any family can have a set as long as it can ensure the growth of plants, but also need to be licensed by the state? But if you are going to grow out of vegetable products.

The preferential policies vary from place to place.

Rely on the market, not on the mayor! It is not the turn of us ordinary people to have a policy!!

I can eat it. In the strict sense of the word, hydroponics is pure soilless cultivation. Because there is no intermediate adsorption and buffer medium between the root system and the nutrient solution, it is a direct immersion contact.

For plants to grow healthily, it is important to ensure that the root system grows well, and whether the root system grows well depends on the rhizosphere environment. The temperature, oxygen, pH, ion concentration and the ratio between different ions in the rhizosphere environment should be appropriate.

And whether the mineral nutrients in the nutrient solution are complete, whether the anion and ion are balanced, whether it contains toxic and harmful substances, whether it contains pathogenic microorganisms, pests, etc., will be manifested in the appearance of the root system. If the root system is white, firm, elastic, not twisted, not discolored, and not broken, it proves that the root system is growing healthily.

OK. Soilless culture is characterized by replacing the soil environment with artificially created crop root growth environment, which can not only meet the needs of crops for nutrients, water, air and other conditions, but also control and regulate these conditions to promote better growth of crops and obtain better nutritional growth and reproductive growth balance. Therefore, soilless crops usually grow well, have high yields, and are of high quality.

The concentration of the nutrient solution used in soilless cultivation is generally about 2 grams per liter of water, but it varies from one species to another.