Soilless cultivation is based on various nutrients required for the growth and development of plants and is formulated into a nutrient solution for direct absorption and utilization by flower plants. Therefore, soilless cultivation is also referred to as hydroponics or hydroponics. Compared with soil culture, it has the following advantages: 1. Good quality. Because the hydroponic nutrient solution is formulated according to the needs of flowers, there are flowers and fertility. As a result, the flowers are large in size, rich in flavor, colorful in color, long in flowering period, and capable of flowering in advance. 2, save nutrients, moisture and labor. Hydroponic as long as the regular supplement with a good nutritional solution on the line, easy to operate, save time and labor. 3, clean, no weeds, less pests and diseases. Hydroponic flowers are applied with a nutrient solution formulated with inorganic elements that are both clean and hygienic. In addition, it can also make flowers grow quickly and produce a short flower cycle. First, the matrix. The main role of the substrate chosen for soilless cultivation is to fix the flower plants in the container, which is stable and free of harmful substances. At present, it is commonly used as a substrate for soilless cultivation in China: 1. Sand culture. Sand grains with a diameter of less than 3 mm are used as matrix. When the nutrient solution is applied, it is generally dropped into the sand. 2, gravel culture. Natural gravel, pumice, volcanic rock, etc. with a diameter greater than 3 mm are used as the matrix. 3, meteorite. Vermiculite is a mica-like mineral that has good cushioning properties, does not sink in, and contains magnesium and potassium that can be used by plants. Perlite. It is a siliceous substance and is mainly used for seed germination. It is better mixed with mudstone and sand. 5, peat. It has good air permeability and high water holding capacity. It can be used as a substrate alone or in combination with slag. In addition, slag, bricks, charcoal, asbestos, sawdust, fern roots, bark and other materials can be used as a substrate and should be washed and disinfected before use. Second, nutrition. The nutrient solution of flowers without soil cultivation, the various elements used in the preparation and the amount thereof should be determined according to the varieties of flowers cultivated and their different growth periods and regions. When the various elements are mixed together, it becomes a nutrient solution. Usage: Potted peanuts are watered once a week for a long time, and each dose can be flexibly determined according to the size of the plant. To prepare and store nutrient solution, do not use metal containers. Use ceramics, enamels, plastics, and glassware. Dissolve each element separately in a small amount of warm water at 50°C, and pour it one by one in the order listed in the formula. In 75% of the water, it was stirred while stirring, and finally the water was added to the whole amount. Should be poured from different parts when used.
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