What does soilless culture mean, soilless culture refers to what does soilless culture mean

Soilless cultivation refers to the method of cultivating plants with nutrient solutions and other equipment without soil. Solution culture (referred to as hydroponics) is the earliest kind of soilless culture that has been applied. As early as the 60s of the 19th century, the German scientist Sachs conducted a solution culture experiment.

This technology has played an important role in the study of plant nutrition, especially in the physiological function of mineral elements and the application of chemical fertilizers. Solution culture can effectively control the types and quantities of mineral elements supplied to plants, and is still an important means of plant physiology research. At the end of the 30s of the 20th century, the American scientist Jerek applied this technology to crop production and achieved success, thus laying the foundation for the application of soilless culture in agricultural production.

The advantages of soilless culture are: shortening the growth and development cycle of plants, overcoming the adverse effects of continuous planting on the land, making full use of water and nutrients, high product yield, good quality, less pollution, etc., therefore, soilless culture has broad development prospects in agricultural production.

Types of soilless culture.

There are dozens of types of soilless culture. According to the type of matrix, it can be divided into solid matrix type and liquid matrix type. The former includes sand-based culture, gravel-based culture, shallow stone culture, rock wool culture, perlite culture, sawdust culture, foam culture, etc.

According to the liquid and gas supply mode, it can be divided into drip irrigation type, spray type, ventilation type, circulating liquid supply type, shallow liquid supply type, etc. Different types of soilless culture have their own characteristics, and people can choose according to their needs and possibilities when applying.

Technical basis of soilless culture.

The composition, concentration, preparation and regulation of nutrient solution are important technical basis for soilless culture.

1. Soilless cultivation refers to the cultivation method of using water, peat, forest humus, vermiculite and other media as the substrate of the plant root system to fix the plant, and the plant root system can directly contact the nutrient solution. The composition of the nutrient solution in soilless culture is easy to control and can be adjusted at any time. In places where there is no soil in the light and temperature, such as deserts, beaches, desert islands, as long as there is a certain amount of fresh water**, it can be carried out.

2. Soilless culture is divided into hydroponics, aeroponics and substrate cultivation according to the different cultivation media. Hydroponics refers to the cultivation method in which the plant roots are in direct contact with the nutrient solution without the use of substrates. The earliest hydroponics was to immerse plant roots in a nutrient solution to grow, which would cause hypoxia and cause root death in severe cases.

The hydroponic method of nutrient solution film method is often used, even if a very thin layer of nutrient solution is continuously circulated through the root system of crops, which not only ensures the continuous supply of crop water and nutrients, but also continuously supplies fresh oxygen to the roots.

According to the regulations of the International Society of Soilless Cultivation, any method of cultivating crops with substrate (or only using substrate for seedling raising, and not using substrate after planting) without using natural soil is collectively referred to as soilless culture.

The main advantage of soilless culture is that it can avoid soil-borne pests and diseases and continuous cropping obstacles, which is one of the main problems in greenhouse production at present. Compared with soil cultivation, soilless culture also has the characteristics of reducing the amount of pesticides, improving crop yield and quality, saving fertilizer, water and labor, and can be cultivated in all places that are not suitable for general agricultural production.

The disadvantage of soilless culture is that the one-time equipment investment is large, and the preparation, adjustment and management of nutrient solution require some specialized knowledge, which can only be mastered through training. Although organic ecological soilless cultivation eliminates the preparation and adjustment of nutrient solution and other links that are not easy for farmers to master, the organic fertilizer used in it needs to be strictly treated, and water management also requires a certain amount of planting experience.

Soilless cultivation refers to the use of hemp silk, vermiculite, etc. as the medium of flower cultivation, and the addition of liquid fertilizer to promote the growth, flowering and fruiting of flowers and trees. This method is called soilless culture.

Hello dear, soilless culture is also known as nutrient hydroponics, soilless culture, solution cultivation, hydroponics, hydroponics, nutrient hydroponics, etc. Soilless cultivation methodCultivation method of vegetable production factorySoilless cultivation method, also known as hydroponic method, is a special cultivation method and scientific research method of vegetable production factory. This method uses gravel, rock wool, vermiculite, plastic products and other substrates to fix the plants, and uses chemical trial production or chemical fertilizer to prepare a nutrient solution to supply the nutrients needed by the crops.

According to the different substrates used, it can be divided into sand culture, hydroponics and aeroponics.