Promote the aerosol cultivation of scientific vegetable soilless cultivation techniques

Aerosol cultivation

Aerosol culture is the most advanced cultivation mode in agricultural production at present, it can realize the rapid growth and development of plants in a short time, and is of great significance to agricultural production, especially in the cultivation of maximizing plant potential, aerosol culture is the best mode. at present, this model has been used in the construction of high-tech demonstration park or sightseeing park, playing a good role in demonstration and science popularization. So why does it have such an amazing effect? Let's analyze it from the needs of plant growth, and through the analysis of growth factors, we can know the reason why this new cultivation model is fast.

The main results are as follows: 1. Aerosol culture is a way to hang the plant in the atomized space so that the root system can obtain water, oxygen and nutrition. The method of pressure atomization or ultrasonic atomization is used to create the best environmental conditions for the root zone, including temperature, moisture, air and nutrition of the root environment. These four factors are the four main factors that affect the absorption and growth of plant roots. How to optimize these four factors is the key path to solve the plant growth rate.

Aerosol cultivation

2. Soil culture is the main way of agricultural production at present. The root system takes root in the soil environment and creates the growth conditions for the root system through the fertilizer and water vapor contained in the soil, in which the soil is composed of solid soil particles, and fertilizer and water vapor are some plant growth factors that fill the soil medium or adsorb on the soil. Soil acts as an anchor for plant growth, providing nutrition, water and air for plant growth. Therefore, in the traditional concept, soil is the indispensable and most basic element for plant growth. Without soil, there would be no plant growth and there would be no agricultural production. It is the most basic factor of production, but with the development of science and technology, people's exploration and research on plant growth factors can carry out plant cultivation as long as they can meet the above-mentioned factors for plant growth, so people creatively develop soilless cultivation techniques. It includes artificial substrate culture, water culture and air culture. However, no matter which cultivation mode is designed around the supply of adequate water, mineral nutrients and oxygen. The growth rate can be maximized by supplying the most sufficient water, nutrition and oxygen to the root system, so among the four cultivation modes of traditional soil cultivation, substrate culture, water culture and aerosol culture, it is found that the water, nutrition and oxygen supply of aerosol culture are the most adequate.

Soil cultivation is difficult to optimize the management of water, fertilizer and air. When overwatering or natural stagnant water, it will cause rotting root phenomenon of anaerobic respiration caused by environmental hypoxia, even if there are enough nutrients in the soil. When the soil is in a state of drought, although there is sufficient oxygen, the water absorption and metabolism of the root system can not be guaranteed, and the mineral ions in the soil are also in a binding state that can not be dissolved and absorbed because of drought, which will lead to poor plant growth.

Under the condition of artificial liquid culture and scientific drip irrigation management, artificial substrate culture can optimize the root environment and create a suitable environment for root growth, but there are certain technical difficulties in management. how to make the supply of fertilizer, water and gas is not contradictory, it can only be achieved by high experience management or relying on computer control technology. More water, less gas, more water. The two phases are called water phase and gas phase, and these two phases are often in dynamic contradiction, and the optimal control is always difficult, but compared with soil, they are more flexible and adjustable, so they grow better than traditional soil cultivation.

The hydroponic culture model also has its advantages and disadvantages. Its advantage is that the root system is directly immersed in the nutrient solution, and the root system absorbs fertilizer and water directly, but it is inevitable that hypoxia will occur. Therefore, various models in hydroponic culture technology are carried out around the technology of increasing dissolved oxygen in water. As long as sufficient oxygen is dissolved in water, plants can give full play to their maximum growth potential. However, the variability of dissolved oxygen in water and the limitation of saturation value will also cause some technical bottlenecks in production, especially in the case of high temperature or low atmospheric pressure, if the oxygen enrichment measures can not be guaranteed, the growth will be affected by hypoxia.

The most advanced aerosol culture can overcome all the above limiting factors and make the root environment in the best water, air and fertilizer environment. In this model, the root system is suspended in the air, oxygen supply is maximized, and fertilizer and water are provided by atomization. The absorption energy of mineral ions and water can be fully guaranteed, and the root can exert the maximum energy conversion rate in the oxygen-rich environment. Therefore, the rate of ion exchange absorption is faster than any other way, so that plants can give full play to their growth potential, which is the core of the rapid growth of aerosol culture model.

Aerosol cultivation

3. Soil cultivation and substrate culture, root shuttle growth is in a solid environment, always encounter the growth resistance of soil particles and artificial grana more or less. In order to overcome the resistance, plants will form unique terrestrial roots by slowing down root growth or thickening root epidermis. The absorption efficiency and growth rate of this kind of roots are much faster than those of aquatic roots or aero-aerosol roots. Therefore, most aerial roots or aquatic roots are much more developed than terrestrial roots, and the root epidermis or cortex is not thickened, which can maintain long-term white and high metabolic activity. All these create the best physiological basis of root system for aerosol culture model, and it is also one of the reasons for its rapid growth.

4. at present, aerosol culture will be used more and more in growth, and it has been effectively proved in production and scientific research that it is a new cultivation model with great growth potential. no matter woody, herbaceous and vines can make its growth give full play to its development potential, and realize the fast growth, high quality and high yield of crop cultivation without changing the gene. It greatly improves the production efficiency and reduces the management input, which is the most advanced cultivation mode in agriculture in the future.