1. Advantages. Soilless cultivation is an emerging flower cultivation advanced technology in recent years. It is based on the various nutrients required for plant growth and development, and is formulated into a nutrient solution for direct absorption and utilization of flower plants. Soilless cultivation is not subject to any restrictions. Air and water can be used anywhere to cultivate flowers. Soilless cultivation of flowers, the actual cultivation of nutrient solution, also known as hydroponic method, compared with soil culture flowers, has the following advantages: (1) good quality. Due to hydroponics, nutrient solutions are formulated according to the needs of the flowers, which are beneficial to the birth of flowers. 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) Conservation of nutrients, moisture and labor. The nutrients and water used in the cultivation of flowers in the earth can only absorb a small part of the plants, and can be lost or transpired in large quantities. At the same time, it takes time for labor to manage, and hydroponics only needs regular supplementation with good nutrient solution. It is easy to operate and saves labor and energy. Time. (3) Clean, no weeds, less pests and diseases, organic fertilizer applied to soil culture flowers, often odor, but also easy to bring a lot of diseases and insect pests, and fertilizer used in hydroponic flowers is a nutrient solution formulated with inorganic elements, both clean and sanitary . In addition, hydroponic culture is more suitable due to the growing environment, so the flower grows rapidly, the flowering cycle is short, and the amount of flowers produced per unit area is higher. 2. Matrix. The main role of the substrate chosen for soilless cultivation is to hold flower plants in containers and preserve nutrients and moisture for plant growth. Therefore, should have a certain degree of water retention, drainage. At the same time should have a certain degree of strength and stability, and does not contain harmful substances. At present, it is commonly used as a substrate for soilless culture and can be used as follows: (1) Sand culture. Sand grains with a diameter of less than 3 mm are used as a matrix, and the nutrient solution is generally introduced into the sand with a dripping method for flower absorption. (2) Gravel cultivation. Natural gravel, pumice, volcanic rock, etc., with a diameter of more than 3 mm are used as the matrix. (3) Meteorite. Vermiculite is a mica-like mineral that has good cushioning properties, is insoluble in water, and contains magnesium and potassium that can be utilized by flowers. (4) 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, according to the end, fern root, bark and other materials can be used as a substrate, but need to be cleaned and disinfected before use. ? 3. Nutrition. Soil-less cultivation of flowers requires nutrient solution. The various elements and amounts used in the preparation of the flowers should be determined according to the varieties of flowers cultivated and their different growth periods and regions. Based on the actual situation in China, the formula for flower cultivation in the north is: 1 liter of water plus 0.22 g of ammonium phosphate, 1.05 g of potassium nitrate, 0.16 g of ammonium sulfate and ammonium nitrate, and 0.01 g of ferrous sulfate. Formula for flower cultivation in the south: 1 liter of water plus 0.94 g of calcium nitrate, 0.58 g of potassium nitrate, 0.36 g of potassium dihydrogen phosphate, 0.01 g of magnesium sulfate 0.49 g of ferrous sulfate. Each of the above two elements is mixed together, and the listed water is added as a nutrient solution. Its usage: Potted peanuts are watered once a week for a long period of time. Each dose can be determined according to the size of the plant. For example, a flower with an inner diameter of 20cm is used for the positive flower, and each time it is poured with about 100ml, the amount of negative flowers is reduced, and the winter or dormancy period is reduced. , Once every half month or once a month, the water supplement still uses tap water, the flower conservation is basically the same as the traditional method. The preparation of nutrient solution, such as tap water, because it contains chloride, harmful to flowers, should be added a small amount of sodium ethylenediaminetetraacetate, such as the use of river water and lake water, need to be filtered, the temperature of the nutrient solution required by various flowers according to them According to the ecological habits, the appropriate liquid temperature can make the flowers grow well in soilless cultivation. For example, the optimum temperature of the tulip is 10~12°C; carnation, mimosa and fern are 12～15°C; chrysanthemum, gladiolus, iris, hyacinth, narcissus and lily are 15～18°C; Chinese rose, rose, Zinnia, Gerbera, and Begonia are 20–25°C; Wang Lian, cacti, and other tropical flowers are 25–30°C. Prepare and store nutrient solutions. Do not use metal containers. Use ceramics, enamels, plastics, and glassware. First, a small amount of 50°C warm water is used to dissolve the various elements, and then they are poured one by one in the order listed in the formula and filled with water equivalent to 75% of the specified capacity. Stirring is performed, and finally the water is added to the entire amount. Should be poured from different parts when used.
Spices are a general term for spices (sometimes called aromatic ingredients) and essences. In a narrow sense, fragrances are not included.
A spice is a substance that can be smelled or tasted. It may be a "single entity" or a "mixture". According to the production method or raw materials, spices can be divided into "natural flavor" and "synthetic flavor" two categories
Flavors And Fragrances,Undecylenic Derivatives,Bio-Based N-Heptaldehyde,Arkema Bio-Based N-Heptaldehyde
Xingbang High Molecular Materials Co., Ltd. , https://www.chemicaladditive.com