Soilless cultivation of Brazilian wood
Brazilian wood is also known as Brazilian eucalyptus, odoriferous tree, and is an evergreen woody foliage plant of the genus Agodaceae. This article will introduce the main points of Brazilian soilless culture techniques. First, the choice of matrix to choose fertilizer, water retention, drainage, and strong mechanical support of the substrate. We use red-red ceramsite as the cultivation substrate, which is beautiful in appearance and can meet the above requirements. Second, the preparation of nutrient solution Brazilian wood soilless cultivation of nutrient solution, rich in nitrate-based acidic acidic nutrient solution is better. When preparing the nutrient solution, use the balance to precisely weigh the various drugs and dissolve them one by one in a fixed amount of water. Stir with a glass rod. The nutrient solution is ready for use, and can also be formulated as a 100-fold mother liquor in a brown bottle. Store in a cool place. Use distilled water for the mother liquor and test the pH. The appropriate pH value for brazilwood is 5.3 to 6.2. If it does not meet the standard, it can be adjusted with dilute solution of sulfuric acid or potassium hydroxide. With a mother liquor can be used for several months to several years, when used in proportion only need to add water to form a nutrient solution can be. With mother liquor should pay attention to the separate dissolution of calcium compounds and phosphate, sulfate, so as to avoid precipitation. The mother liquors of calcium salts, other macronutrients, trace elements, and iron salts are separately prepared and packaged in four glass bottles and mixed in a large amount of water when used. Third, soilless planting Brazilian wood soilless cultivation pots can use special soilless pots, the chassis and the upper with a wick connected to the wick to suck the nutrient solution to the root of the matrix to supply the root. In addition, various process vessels without bottomed holes and ordinary plastic pots can also be used. Before planting, the used tools and pots were soaked and cleaned with detergent. The used substrates were placed in an oven or oven and heated at a temperature of 82° C. for 30 minutes. The ceramsite is fired at 800°C with clay. The new ceramsite is free from germs, eggs and grass seeds and does not require disinfection. When planting, first put the desired ceramsite into a basin of water to clean and absorb moisture, and then put the root of the Brazilian wood seedling into the other basin to rinse. Put large grains of ceramsite on the bottom of the pot, and use the left hand to fix the seedlings in the center of the pot, and put the right hand into small grains of ceramsite, and bury the root system. For the sake of beauty, a large layer of ceramsite is scattered on the top layer. Finally, gently shake the pots to make the roots and the substrate stick. The newly transplanted Brazilian wood was placed in the shade for a week, and the water was often sprayed on the leaves to increase the humidity, and gradually moved to the lighted place. After the nutrient solution can be poured into normal management. 4. The optimum temperature for the growth of Brazilian wood is 18 °C to 25 °C, and the winter temperature must not be lower than 5 °C. During vigorous growth, it is necessary to keep the substrate moist, but no water can accumulate. The amount of water in the winter to keep the substrate a little wet, no drought can be. The relative humidity of the air is maintained at 70% to 80%. For this purpose, water should always be sprayed on the foliage. Brazilian wood does not require strict light. Variegated leaf species require sufficient sunshine, otherwise the leaves are not obvious. During the growing period, the nutrient solution was poured every 10 days or so, and it was poured 25 to 30 days in winter. The amount of use was controlled to protect the roots from wintering safely. The amount of nutrient solution to be used depends on the pot used: If it is a special soilless pot, pour the nutrient directly into the lower plate, the amount of which is not more than 2/3 of the height of the plate, and transport upwards by the wick; there is no bottom hole In the container, the amount of the nutrient solution used is 13% to 14% of the container volume; other plastic pots flow out of the nutrient solution through the bottom hole of the pot.