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Hydroponic vegetables, opening a new era of planting

Hydroponic vegetables, opening a new era of planting

  • Categories:Online Science
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  • Time of issue:2021-03-23 15:56
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(Summary description)Hydroponic vegetables, opening a new era of planting As far as the current situation is concerned, global changes are rapid and unpredictable. The future development of the hydroponic industry will be full of more variables, and it is necessary to pay close attention to the development of the market. In the northern cities of our country, leeks are almost the vegetables of choice for the citizens to make steamed buns and dumplings.

Hydroponic vegetables, opening a new era of planting

(Summary description)Hydroponic vegetables, opening a new era of planting
As far as the current situation is concerned, global changes are rapid and unpredictable. The future development of the hydroponic industry will be full of more variables, and it is necessary to pay close attention to the development of the market.
In the northern cities of our country, leeks are almost the vegetables of choice for the citizens to make steamed buns and dumplings.

  • Categories:Online Science
  • Author:
  • Origin:
  • Time of issue:2021-03-23 15:56
  • Views:
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Hydroponic vegetables, opening a new era of planting

As far as the current situation is concerned, global changes are rapid and unpredictable. The future development of the hydroponic industry will be full of more variables, and it is necessary to pay close attention to the development of the market.

In the northern cities of our country, leeks are almost the vegetables of choice for the citizens to make steamed buns and dumplings. However, in recent years, "poisonous leek" incidents have appeared in various parts of the country, and many consumers have begun to stay away from leeks.

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Anyone who has grown leeks knows that it is indeed a new thing that leeks do not grow maggots. Leek maggots are like the shadow of leeks. They are difficult to cure. Where there are leeks, there are always leeks. They are the killer of leeks. In order to cure the leek maggots, people sprayed chemical pesticides on the leeks, but because the leek maggots grow in the soil, the spraying can't reach the insects, and the control effect is not ideal, so people directly irrigate the chemical pesticides on the roots of the leeks. The effect of root irrigation was not bad at first, but after a long time, the leek maggots developed resistance.

To deal with the resistant leek maggots, people have adopted more toxic pesticides, resulting in frequent occurrence of pesticide residue incidents, and "poisonous leek" has become a shadow in people's minds.

"Hydroponic vegetables" make people away from "worry"

The hydroponic leek grows in a specially configured nutrient solution, which prevents leek maggots, various germs and weeds, as well as various diseases and insect pests due to the root system growing in the soil for many years. In order to prevent leek leaves from being eaten by insects, the leek is still A yellow board is hung above it to attract aphids and other lepidopteran flying insects. "At present, the price of organic leeks sold in the market is about 15 yuan per catty, which is the first choice for consumers on the healthy table, while the picking price of hydroponic leeks is only 10 yuan per catty.

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Hydroponic vegetables are widely used

Hydroponic leeks can be said to be the younger generation of hydroponic vegetables. Prior to this, hydroponic potatoes, hydroponic tomatoes and other hydroponic vegetables have been relatively mature in China, especially in parts of southern China.

Hydroponics technology is a high-tech research result that uses a computer intelligent control system. "Hydroponics" is a type of soilless cultivation and is classified into substrate-free cultivation. The type of substrate-free cultivation refers to the environment where the plant roots grow without substrate. Fixed root system, the root system grows in nutrient solution or moist air containing nutrient solution, but some substrates may be used when raising seedlings. Hydroponics is a soilless culture method in which most of the roots of plants grow directly in the nutrient solution layer. The culture tank is reasonably mixed with a solution rich in various minerals and trace elements, which is beneficial to the human body, and because of its unique cultivation technology, there are no pesticides and pests, and it can be eaten without washing with water. It is very clean.

 

Why hydroponic vegetables are better than ordinary vegetables

At present, various food safety issues such as common vegetables, pesticide residues, ripening agents, etc. have attracted more and more public attention. The emergence of "hydroponic vegetables" will undoubtedly allow people to eat safe vegetables.

Compared with ordinary vegetables, the nutritional composition of hydroponic vegetables is more balanced. Relevant information shows that the nutrient solution provided in hydroponic vegetables is composed of water and nutrient elements. Nutrient elements come from soluble inorganic fertilizers, which are composed of the same molecules as the nutrients needed by plants to grow in the soil. Hydroponic cultivation can accurately control the nutrient content of vegetables. When harvesting, the staff's packaging of marketed vegetables can protect the leaves from being crushed and damaged, so that the vegetables bought by consumers are very fresh.

In addition, the traditional open-air production of soil-cultured vegetables is restricted by natural conditions, the yield per unit area of ​​land is low, and the land utilization rate is low due to the inability of continuous cropping of some vegetables. In severe weather, severe heat and cold, production and income are often reduced, and pesticides and heavy metal pollution are also affected. Inevitably, it is difficult for the citizens to eat "hygienic" green vegetables in the true sense.

However, the production of vegetables by hydroponics technology does not require soil. Instead, they are planted in the water on floating boards in deep ponds, and the nutrients needed by the vegetables are supplied through the nutrient solution, and the roots of the vegetables are not in contact with the soil. In addition, the intelligent control of temperature, light, water and carbon dioxide is adopted, and isolation belts are set to prevent the intrusion of pests and diseases, which can avoid soil continuous cropping obstacles, weather disasters and pests, and there is no heavy metal pollution, no pesticides are required, and the quality of vegetables is safe, clean and hygienic. It can be picked and eaten without washing, and can be produced around the clock, sowing and harvesting every day. This can well solve the problem of vegetable supply in the off-season.

Since vegetables are "planted" in the water and automatically provide nutrition, eliminating the labor costs of arable land, fertilizing, and weeding, "this has certain advantages in areas where labor costs are currently high." Insiders pointed out that "hydroponics is good for the environment." With high controllability of nutrition and nutrition, high yield and high quality can be achieved."


 

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