What is hydroponics ？How to do it ?
Hydroponics is a soilless cultivation method using modern engineering technology, also known as nutrient solution
The core of cultivation is to fix the roots of the plants in the planting baskets so that the roots will naturally grow into the planting baskets.
In the nutrient solution. Nutrient solution replaces natural soil to provide water and nutrients to plants
Grade growth factors to enable plants to grow normally and complete their entire life cycle Period. As land cultivation is greatly affected by weather, season and human factors, and in recent years
Serious pollution, heavy metal ions, bacteria and parasites in the soil can be
It can enter the human body through vegetables grown on the soil and endanger human health. Hydroponics can effectively control the nutrients required by plants and satisfy people’s need for fresh, nutritious and healthy plants and fruits.
Health, green and environmental protection requirements.
The hydroponic planting method is very convenient to operate. Sprinkle seeds on the substrate, add water and nutrient solution, and give enough light to the plants to realize fully automatic indoor cultivation. It avoids the disadvantages of soil cultured plants, reduces the limitations of plant planting, and enlarges the operating space, making planting a simple and beautiful thing, saving time and effort without any pollution.
Hydroponics is a non-substrate cultivation, but the cultivation of hydroponic plants requires the use of substrates.
There is no substrate to fix the root system in the environment where the root system of hydroponic plants grows, and the root system grows in nutrient solution or moist air containing nutrient solution.
Nutrient solution preparation is the core technology for the normal growth of hydroponic plants, and it is also the basis and key of hydroponics. According to the nutrient requirements of plant growth, a solution prepared by dissolving a certain amount of fertilizer in water in an appropriate proportion is called nutrient solution.
Is the "nutrition" of the hydroponic nutrient solution safe?
1. The hydroponic nutrient solution is precisely formulated using some chemical fertilizers according to the law of nutrient requirements under the natural growth state of plants. It has no essential difference with the composition of effective nutrients in the soil. Most of the soil Nutrients must also undergo microbial transformation or other chemical transformation processes to form ion forms before they can be absorbed by plants
2. Hydroponic plants do not have the problems of pesticide pollution and heavy metal pollution in the soil. It can be said that hydroponics is easier to achieve pollution-free production of fruits and vegetables, and the products are safer.
Generally speaking, most hydroponic plants like moist, warm environment.
Temperature problem. The indoor temperature is best maintained at 15 to 30 degrees, so that plants can grow better.
Nutrient solution problem. The concentration of the nutrient solution required by hydroponic plants is different, but it is best not to be too strong or too diluted, as long as it is appropriate, and the nutrient solution should be replaced after a period of use. Generally, for vegetables with a short growth cycle, the nutrient solution is replaced every crop. For fruits and vegetables, replace the nutrient solution every 2 months.
In addition, plant growth requires sufficient light. During hydroponic cultivation, plants are best placed in a place with good indoor light. If the room is dark, plant production lights can be used for light supplementation.
Plant growth lamps are artificial light sources, usually electric light sources, designed to stimulate plant growth by emitting an electromagnetic spectrum suitable for photosynthesis. Plant lights are used in applications that do not have natural light or require supplementary light. For example: in winter, when the possible daylight time may not be enough to achieve the desired plant growth, lights are used to extend the time the plants receive light. If the plants don't get enough light, they will grow in length.
The growing lights either try to provide a spectrum similar to the sun, or provide a spectrum that is more suitable for the needs of the cultivated plants.
. Simulate outdoor conditions from different colors, temperature and spectral output of the growth lamp, and change the lumen output (intensity) of the lamp. According to the types of cultivated plants, the cultivation stage (such as the germination/vegetative period or the flowering period/fruiting period) and the photoperiod required by the plant, the specific range of the spectrum, the luminous efficiency and the color temperature are all desirable for the specific plant and time period.
The effects of different spectral ranges on plant physiology:
280 ~ 315nm: minimal impact on morphology and physiological processes
315 ~ 400nm: Less absorption of chlorophyll, affecting photoperiod effect and preventing stem elongation
400 ~ 520nm (blue): The absorption ratio of chlorophyll and carotenoids is the largest, and has the greatest impact on photosynthesis
520 ~ 610nm (green): the absorption rate of the pigment is not high
610 ~ 720nm (red): Low chlorophyll absorption rate, which has a significant impact on photosynthesis and photoperiod effects
720 ~ 1000nm: Low absorption rate, stimulate cell lengthening, affect flowering and seed germination
>1000nm: Converted into heat